BQ2660-7R_技术文档

Q Series

66 - 132 Watt DC-DC Converters

Features

• RoHS lead-free-solder and lead-solder-exempted products

are available

• 5 year warranty for RoHS compliant products with an

extended temperature range

• Class I equipment

• Compliant with EN 45545 (version V106 or later)

• Wide input voltage ranges up to 154 VDC

• 1 or 2 isolated outputs from 3.3 to 24 V

• Flexible output power

• Extremely high eﬃciency of up to 90%

• Excellent surge and transient protection

• Outputs open and short-circuit proof

• Redundant operation, current sharing

• Extremely low inrush current, hot-swappable

• Externally adjustable output voltage and inhibit

• Electric strength test 2.1 kVDC

• Extremely slim case (4 TE, 20 mm), fully enclosed

111

4.4ꢀ

3 U

Safety-approved to the latest edition of IEC/EN 60950-1

and UL/CSA 60950-1

164

6.5ꢀ

20

0.8ꢀ

4 TE

1

on request

Table of Contents

Description........................................................................................2

Model Selection................................................................................2

Functional Description......................................................................6

Electrical Input Data .........................................................................7

Electrical Output Data.......................................................................9

Auxiliary Functions .........................................................................18

Electromagnetic Compatibility (EMC).............................................22

Immunity to Environmental Conditions...........................................24

Mechanical Data.............................................................................26

Safety and Installation Instructions.................................................27

Description of Options....................................................................29

Accessories....................................................................................31

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BCD20011 Rev AL1, 08-Aug-2018

Q Series

66 - 132 W DC-DC Converters

Description

These extremely compact DC-DC converters incorporate all necessary input and output ﬁlters, signaling and protection features,

which are required in the majority of applications. The converters provide important advantages such as ﬂexible output power

through primary current limitation, high eﬃciency, excellent reliability, very low ripple and RFI noise levels, full input to output

isolation, negligible inrush current, overtemperature protection, and input over-/undervoltage lockout.

The converter inputs are protected against surges and transients occurring on the source lines.

The converters are particularly suitable for rugged environment, such as railway applications. They have been designed in

accordance with the European railway standards EN 50155 and EN 50121-3-2. All printed circuit boards are coated with a

protective lacquer.

The outputs are continuously open- and short-circuit proof. An isolated output Power Good signal and LEDs at the front panel

indicate the status of the converter. Test sockets at the front panel allow for a check of the main output voltage.

Full system ﬂexibility and n+1 redundant operating mode are possible due to virtually unrestricted series or parallel connection

capabilities of all outputs. In parallel connection of several converters, automatic current sharing is provided by a single-wire

interconnection.

As a modular power supply or as part of a distributed power supply system, the extremely low-proﬁle design reduces the necessary

power supply volume without sacriﬁcing high reliability. A temperature sensor disables the outputs when the case temperature

exceeds the limit. The outputs are automatically re-enabled, when the temperature drops.

The fully enclosed, black-coated aluminum case acts as a heat sink and an RFI shield. The converters are designed for 19" DIN-

rack systems occupying 3 U/4 TE only, but can also be chassis-mounted by four screws. Fitting an additional heat sink or ordering

options with ﬁtted heat sink is possible as well.

Model Selection

Table 1a: Model Selection BQ, GQ

Output 1

Output 2

Output power¹

Operating input voltage range, eﬃciency

Options

T_A= 71°C T_A= 50°C

2

V_{o nom}I_{o nom}I_{o max}V_{o nom}I_{o nom}I_{o max}

P_{o nom}

P_{o max}

V_{i min}- V_{i max}

η_min

η_typ

V_{i min}- V_{i max}

η_min

[%]

η_typ

[VDC]

3.3

[A]

20

16

8

[A] [VDC] [A]

[A]

[W]

14.4 - 36 VDC

[%]

81

85

87

88

85

87

89

[%]

21.6 - 54 VDC

[%]

25

20

10

8

-

66

82

BQ1101-9G

GQ1101-9G

-7, B, B1, non-G

5.1

102

120

132

97

BQ1001-9RG

BQ2320-9RG

BQ2540-9RG

BQ2660-9RG

BQ2001-9RG

BQ2320-9RG

BQ2540-9RG

BQ2660-9RG

86

GQ1001-9RG 85.5

87

GQ2540-9RG 86.5

90.5 GQ2660-9RG 88

86 GQ2001-9RG 85.5

88.5 GQ2320-9RG 87

89 GQ2540-9RG 86.5

90.5 GQ2660-9RG 88

86

89

12 ³

15 ³

24 ³

5.1 ⁴

12 ⁴

15 ⁴

24 ⁴

-

96

88.5 GQ2320-9RG

89

-7, P, F, B, B1, non-G

-7, F, B, B1, non-G

6.6

4.4

7.5

4

-

99

88.5

90

5.5

8.5

5

-

106

77

5.1 ⁴

12 ⁴

15 ⁴

24 ⁴

7.5

4

8.5

5

4

86

96

120

132

89

3.3

2.2

4

3.3

99

88.5 -7, P, F, B, B1, non-G

2.75

2.2 2.75

106

90

1

The cumulated power of both outputs cannot exceed the total power for the speciﬁed ambient temperature.

See also Output Power at Reduced Temperature.

Minimum eﬃciency at V_{i nom}, I_{o nom}and T_A= 25 °C

Double-output models with both outputs connected in parallel

Double-output models. The isolated output 2 is a tracking output 1.

2

3

4

NFND: Not for new designs.

Preferred for new designs

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Q Series

66 - 132 W DC-DC Converters

Table 1b: Model Selection CQ, 48Q

Output 1

Output 2

Output power¹

Operating input voltage range, eﬃciency

Options

T_A= 71°C T_A= 50°C

2

V_{o nom}I_{o nom}I_{o max}V_{o nom}I_{o nom}I_{o max}

P_{o nom}

P_{o max}

V_{i min}- V_{i max}

η_min

η_typ

V_{i min}- V_{i max}

η_min

[VDC]

3.3

[A]

20

16

8

[A] [VDC] [A]

[A]

[W]

33.6 - 75 VDC

[%]

38.4 - 75 VDC

[%]

25

20

-

66

82

-

82

102

82

CQ1101-9G

82

85

-7, P, F, B, B1, non-G

5.1

-

CQ1001-9RG

87

89.5

90

-7, P, F, B, B1, non-G

5.1

-

48Q1001-2R

48Q2320-2R

48Q2540-2R

48Q2660-2R

83

85

87

-

12 ³

15 ³

24 ³

5.1 ⁴

12 ⁴

15 ⁴

24 ⁴

10

-

96

-

120

96

CQ2320-9RG

88

-7, P, F, B, B1, non-G

8

-

6.6

4.4

7.5

4

8

-

99

-

120

99

CQ2540-9RG 88.5

CQ2660-9RG 88.5

-7, P, F, B, B1, non-G

-

5.5

-

106

-

132

106

97

90.5

-7, P, F, B, B1, non-G

-

8.5

5

5.1 ⁴

12 ⁴

15 ⁴

24 ⁴

7.5

4

8.5

5

-

77

96

-

CQ2001-9RG

CQ2320-9RG

85

87

88

-7, P, F, B, B1, non-G

120

96

-7, P, F, B, B1, non-G

4

-

4

48Q2320-2R

48Q2540-2R

48Q2660-2R

85

87

-

3.3

2.2

4

3.3

2.2

4

-

99

-

120

99

CQ2540-9RG 88.5

CQ2660-9RG 88.5

90

-7, P, F, B, B1, non-G

-

2.7

-

2.7

-

106

-

132

106

-7, P, F, B, B1, non-G

-

Table 1c: Model Selection DQ, EQ

Output 1

Output 2

Output power¹

Operating input voltage range, eﬃciency

Options

T_A= 71°C T_A= 50°C

2

V_{o nom}I_{o nom}I_{o max}V_{o nom}I_{o nom}I_{o max}

P_{o nom}

P_{o max}

V_{i min}- V_{i max}

η_min

η_typ

V_{i min}- V_{i max}

η_min

η_typ

[VDC]

3.3

[A]

20

16

8

[A] [VDC] [A]

[A]

[W]

43 - 108 VDC

[%]

66 - 150 VDC

[%]

25

20

10

8

-

66

82

DQ1101-9G

82*

EQ1101-9G

-7, B, B1, non-G

5.1

102

120

132

97

DQ1001-9RG 85.5

86.5 EQ1001-9RG

90 EQ2320-9RG

85

87

86

89

86

89

12 ³

15 ³

24 ³

5.1 ⁴

12 ⁴

15 ⁴

24 ⁴

-

96

DQ2320-9RG

DQ2540-9RG

DQ2660-9RG

DQ2001-9RG

DQ2320-9RG

DQ2540-9RG

DQ2660-9RG

88

89

85

88

89

-7, P, F, B, B1, non-G

6.6

4.4

7.5

4

-

99

90.5 EQ2540-9RG 87.5

90 EQ2660-9RG 87.5

86.5 EQ2001-9RG

90 EQ2320-9RG

5.5

8.5

5

-

106

77

5.1 ⁴

12 ⁴

15 ⁴

24 ⁴

7.5

4

8.5

5

4

84

87

-7, B, B1, non-G

96

120

132

3.3

2.2

4

3.3

99

90.5 EQ2540-9RG 87.5

90 EQ2660-9RG 87.5

-7, P, F, B, B1, non-G

2.75

2.2 2.75

106

1

The cumulated power of both outputs cannot exceed the total power for the speciﬁed ambient temperature.

See also Output Power at Reduced Temperature.

Minimum eﬃciency at V_{i nom}, I_{o nom}and T_A= 25 °C

Double-output models with both outputs connected in parallel

Double-output models. The isolated output 2 is a tracking output 1.

2

3

4

NFND: Not for new designs.

Preferred for new designs

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Q Series

66 - 132 W DC-DC Converters

Part Number Description

C Q 2 5 40 -9 R B1 G

Input voltage V_{i nom}

:

24 V ..................................................................... B

36 V ......................................................................G

48 V ......................................................................C

48 V (Telecom, NFND)........................................ 48

72 V ......................................................................D

110 V.....................................................................E

..............................................................................Q

Series

Number of outputs:

Single output models ............................................ 1

Double output models .......................................... 2

Single output models (long case) ²....................... 6

Double output models (long case) ²...................... 7

Nominal voltage of main output:

3.3 V ..................................................................... 1

5.1 V ..................................................................... 0

12 V ...................................................................... 3

15 V ...................................................................... 5

24 V .................................................................. 6, 7

Other voltages .............................................. 7, 8, 9

Other speciﬁcations and additional features

for single output models ³............................01 - 99

Nominal voltage of output 2, V_{o2 nom}

:

5.1 V ............................................................01 - 09

12 V .............................................................20 - 39

15 V .............................................................40 - 59

24 V .............................................................60 - 79

Other voltages and additional features⁵...... 01 - 99

Operational ambient temperature range T_A:

–10 to 50 °C (NFND) ...........................................-2

–25 to 71 °C (option, NFND) ...............................-7

–40 to 71 °C ........................................................-9

other³....................................................... -0, -5, -6

Output voltage adjust (auxiliary function) ................................R

1

Options: Potentiometer (option, NFND) ............................P

No fuse (option) ....................................................F

Additional heatsink ........................................ B, B1

RoHS-compliant for all 6 substances ......................................G

1

Option P excludes feature R and vice versa.

Models with 220 mm case length. Just add 5000 to the standard model number, e.g., CQ2540-9RG → CQ7540-9RG.

Customer-speciﬁc models.

2

3

Note: The sequence of options must follow the order above. This part number description is not intended for creating part numbers.

NFND: Not for new designs. Preferred for new designs

Example: CQ2540-9RB1G: DC-DC converter, input voltage range 33.6 to 75V, double-output model, each output providing

15 V/3.3 A, equipped with a heat sink, operating ambient temperature T_A= –40 to 71 °C, RoHS-compliant for all six substances.

Note: All models have the following auxiliary functions, which are not shown in the type designation: input and output ﬁlter, inhibit, sense lines,

current sharing, Out OK signal, LED indicators, and test sockets (not 48Q models).

Note: 48Q models are designed according to Telecom standards ETS 300132-2 and EN 41003. V_{i min}is 38.4 V, such limiting the input current

I_ito 150% of I_{i nom}

.

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Q Series

66 - 132 W DC-DC Converters

Product Marking

Type designation, applicable safety approval and recognition marks, CE mark, warnings, pin allocation, patents, and company logo.

Identiﬁcation of LEDs, test sockets and potentiometer.

Input voltage range and input current, nominal output voltages and currents, degree of protection, batch no., serial no., and data

code including production site, version (modiﬁcation status) and date of production.

Output Conﬁguration

The Q Series design allows diﬀerent output conﬁgurations to cover almost every individual requirement, by simply wiring the

outputs in parallel, series, or symmetrical conﬁguration as per the following ﬁgures. For further information and for parallel and

series operation of several converters see Electrical Output Data.

01002a

01001a

Single-output

model

Double-output

model

4

6

4

Voꢀ

Vo2ꢀ

Vo1ꢀ

Sꢀ

12

14

8

28

30

Sꢀ

S–

28

30

12

14

8

i

Load

Viꢀ

S–

Viꢀ

32 Vi–

Vo–

32 Vi–

Vo1–

10

Vo2– ¹⁰

Fig. 1

Fig. 2

Parallel-output conﬁguration

Single-output conﬁguration

01003a

01004a

Double-output

model

Double-output

model

6

10

4

Vo1ꢀ

V_oꢀ

Vo2ꢀ

Vo2–

Vo1ꢀ

Sꢀ

4

12

14

8

Sꢀ

S–

Load 1

28

30

i

28

i

Viꢀ

Vo1–

Vo2ꢀ

Vo2–

GND

Load 2

V_o–

12

30 Viꢀ

Load

32 Vi–

6

Vi–

S– 14

32

10

Vo1–

8

Fig. 3

Series-output conﬁguration

Fig. 4

Symmetrical-output conﬁguration (with common ground)

01005a

Double-output

model

Vo1ꢀ

4

12

Sꢀ

Load 1

Load 2

28

30

32

S– ¹⁴

i

Vo1–

8

6

Viꢀ

Vi–

Vo2ꢀ

Vo2–

10

Fig. 5

Independent-output conﬁguration

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Q Series

66 - 132 W DC-DC Converters

Functional Description

The converters are designed as forward converters using primary and secondary control circuits in SMD technology. The switching

frequency is approximately 200 kHz under nominal operating conditions. The built-in high-eﬃcient input ﬁlter together with a small

input capacitance generate very low inrush currents of short duration. After transformer isolation and rectiﬁcation, the output ﬁlter

reduces ripple and noise to a minimum without compromising the dynamic ability. The output voltage is fed to the secondary control

circuit via separate sense lines. The resultant error signal is sent to the primary control circuit via a signal transformer.

Double-output models have the voltage regulation of output 2 relying on the close magnetic coupling of the transformer and the output

inductor together with the circuits' symmetry.

The current limitation is located at the primary side, thus limiting the total output current in overload conditions. This allows ﬂexible

loading of each output for unsymmetrical loads in the range 10 to 90% of the total output power. In applications with large dynamic

load changes, we recommend connecting such a load to output 1. If output 2 is not used, it should be connected parallel to output 1.

Both outputs can either be series- or parallel-connected (see Electrical Output Data).

In normal operation, the internal control circuits are powered by a third winding of the main choke (except 48Q models). Start-up is

ensured from the input voltage by a linear regulator.

Note: When the output voltage is much lower then the nominal value, this linear regulator is activated, generating considerable power losses.

03111a

2

22

24

18

Out OKꢀ

Out OK–

T

Output

control

Primary

control circuit

28

i

Output

monitor

16 R³

Sꢀ¹

12

4

6

Viꢀ 30

Voꢀ

Input

filter

Output

filter

Vi–

8

32

26

Vo–

S–¹

Fuse

10

14

1

C_y

Isolation

20

4

¹Leading pins

²Potentiometer for option P ³Do not connect for models xQ1101 or with option P ⁴Do not connect

Fig. 6

Block diagram of a single-output converter

03112a

2

22

Out OKꢀ

Out OK–

T

24

18

16

Output

control

Primary

control circuit

28

i

Output

monitor V_o2

R³

6

Vo2ꢀ

Output

filter

Viꢀ 30

10 Vo2–

Input

filter

Sꢀ¹

12

Vo1ꢀ

4

Vi–

32

26

Fuse

Output

filter

C_y

1

8

Vo1–

S–¹

14

C_y

Isolation

20

4

¹Leading pins

²Potentiometer for option P ³Do not connect for models with option P ⁴Do not connect

Fig. 7

Block diagram of a double-output converter

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Q Series

66 - 132 W DC-DC Converters

Electrical Input Data

General conditions:

- T_A= 25 °C, unless T_Cis speciﬁed.

- Sense lines connected directly at the connector, inhibit (28) connected to Vi– (32).

- R-input not connected; with option P, V_oset to V_{o nom}at V_{i nom}

.

Table 2a: Input data

Model

BQ

GQ

CQ

Unit

Characteristics

Conditions

min

typ

max

min

typ

max

min

typ

max

14.4

36

21.6

54

33.6

75

V_iOperating input voltage cont. I_o= 0 – I_{o max,}T_{C min}– T_{C max}

24

36

48

V_{i nom}Nominal input voltage

V_{i abs}Input voltage limits

V

0

50

0

63

0

100

3 s, without damage

4.5

3.0

2.2

I_i

Typical input current ¹

V_{i nom,}I_{o nom}

A

W

A

2.5

1.0

3.0

1.5

2.5

1.5

P_{i 0}

No-load input power

V_{i min}– V_{i max,}I_o= 0

P_{i inh}Idle input power ⁴

55

50

130

5

40

110

5

35

80

8

I_{inr p}

t_{inr r}

t_{inr h}

t_on

Peak inrush current ²

Rise time inrush

Time to half value

Start-up time ³

V_{i nom,}I_{o nom}

μs

ms

0→ V_{i min,}I_{o nom}

Table 2b: Input data

Model

48Q²

DQ

EQ

Unit

Characteristics

Conditions

min

typ

max

min

typ

max

min

typ

max

38.4

75

43

108

66

150

154

V_i

Operating input voltage cont.

for ≤ 2 s, without lockout

I_o= 0 – I_{o max}

T_{C min}– T_{C max}

V_{i 2s}

V

48²

2.2

72

110

1.0

V_{i nom}Nominal input voltage

V_{i abs}Input voltage limits

0

100

0

125

0

200

3 s, without damage

I_i

Typical input current ¹

V_{i nom,}I_{o nom}

A

W

A

1.5

2.5

1.5

5.5

3.5

5.0

3.5

P_{i 0}

No-load input power

V_{i min}– V_{i max,}I_o= 0

P_{i inh}Idle input power ⁴

I_{inr p}

t_{inr r}

t_{inr h}

t_on

Peak inrush current ²

Rise time inrush

Time to half value

Start-up time ³

35

80

8

20

50

90

20

45

15

25

20

V_{i nom,}I_{o nom}

μs

ms

0→ V_{i min,}I_{o nom}

1

2

3

4

Typical input current depends on model type

According to ETS 300132-2

See ﬁg. 19

Converter inhibited

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Q Series

66 - 132 W DC-DC Converters

Input Fuse

An incorporated fuse in series to the negative input line protects against severe defects. The fuse is not externally accessible.

Reverse polarity at the input will cause the fuse to blow.

Note: For models with no internal fuse, see opt. F. The customer must provide an appropriate external fuse or circuit breaker.

Model

BQ

Fuse type

Reference and rating

very fast acting

2x Littelfuse 251, 10 A, 125 V

2x Littelfuse 251, 7 A, 125 V

Littelfuse 251, 10 A, 125 V

Littelfuse 251, 7 A, 125 V

Littelfuse 263, 5 A, 250 V

GQ

CQ

48Q

DQ

EQ

Input Transient Protection

Ametal oxide VDR (Voltage Dependent Resistor) together with the input fuse and a symmetrical input ﬁlter form an eﬀective protection

against high input transient voltages, which typically occur in most installations, especially in battery-driven mobile applications.

Nominal battery voltages in use are: 24, 36, 48, 72, 96, and 110 V. In most cases each nominal value is speciﬁed in a tolerance

band of –30% to +25%, with short excursions to ±40% or even more.

In some applications, surges according to RIA12 are speciﬁed in addition to those deﬁned in IEC60571-1 or EN 50155. The power

supply must not switch oﬀ during these surges, and since their energy can practically not be absorbed, an extremely wide input

voltage range is required. The Q Series input ranges have been designed and tested to meet most of these requirements. See

also Electromagnetic Immunity.

Input Under-/Overvoltage Lockout

If the input voltage falls outside the limits of V_i, an internally generated inhibit signal disables the output(s).

Inrush Current

The inherent inrush current value is lower than speciﬁed in the standard ETS 300132-2. The converters operate with relatively

small input capacitance C_i(see table 4), resulting in low inrush current of short duration. As a result, in a power-bus system the

converters can be hot-swapped, causing negligible disturbances.

Input Stability with Long Supply Lines

If a converter is connected to the power source by long supply lines exhibiting a considerable inductance L_ext, an additional external

capacitor C_extconnected across the input pins improves the stability and prevents oscillations.

Actually, a Q Series converter with its load acts as negative resistor r_i, because the input current I_irises, when the input voltage V_i

decreases. It tends to oscillate with a resonant frequency determined by the line inductance L_extand the input capacitance C_i+ C_ext,

damped by the resistor R_ext. The whole system is not linear at all and eludes a simple calculation. One basic condition is given by

the formula:

L_ext• P_{o max}

dV_i

___

_________

C_i+ C_ext

>

( r_i=

)

R_ext• V_{i min}

²

dI_i

R_extis the series resistor of the voltage source including the supply lines. If this condition is not fulﬁlled, the converter may not reach

stable operating conditions. Worst case conditions are at lowest V_iand at highest output power P_o.

Low inductance L_extof the supply lines and an additional capacitor C_extare helpful. Recommended values for C_extare given in table 4,

which should allow for stable operation up to an input inductance of 2 mH. Ci is speciﬁed in table 4.

ꢁM001c

Table 4: C_iand recommended values for C_ext

Converter

L_ext

R_ext

Viꢀ

Vi–

Voꢀ

Vo–

Model

BQ

C_i

Recomm. C_ext

≥ 680 μF

≥ 470 μF

≥ 150 μF

≥ 68 μF

Voltage

40 V

ꢀ

R_i

C_i

220 μF

110 μF

50 μF

22 μF

11 μF

GQ

63 V

CQ

100 V

125 V

200 V

48Q

DQ

Fig. 8

EQ

Input conﬁguration

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Electrical Output Data

General conditions:

- T_A= 25 °C, unless T_Cis speciﬁed.

- Sense lines connected directly at the connector, inhibit (28) connected to Vi– (32).

- R input not connected; with option P, V_oset to V_{o nom}at V_{i nom}

.

Table 5a: Output data for single-output models and double-output models with both outputs in parallel conﬁguration

Model

BQ – GQ1101

3.3 V

48Q / BQ – GQ1001

5.1 V

48Q / BQ – GQ2320

12 V

Unit

Output

min

typ

max

min

typ

max

min

typ

max

Characteristics

Conditions

3.28

3.24

3.32

3.35

5.07

5.02

5.13

5.18

11.94

12.06

12.18

V_o1

V_ow

Setting voltage of 1^stoutput

V_{i nom}, I_{o nom}

11.82

Worst case output voltage

V_{i min}– V

i max

V

A

T_{C min}– T_{C max}

,

Overvoltage limitation

of second control loop

4.5

4.9

5.9

6.4

13.5

0

14.3

V_{o P}

I_o

I_o= 0 – I_{o max}

Output current ²

16/20³

8.0/10³

0.05

25

0

V_{i min}– V

i max

20

16

8.0

I_{o nom}Nominal output current

I_{o L}

Output current limit ²

T_{C min}– T_{C max}

26

32.5

25

8.4/10.5³

10.4/12.5³

16.8/21³

20.8/26³

20

15

25

10

20

10

20

40

Switch. frequency

Total incl. spikes

V_{i nom}, I_{o nom}

Output

noise

4

v_o

mV_pp

W

50

BW = 20 MHz

V_{i min}– V

i max

82

82/102³

96/120³

P_{o max}Output power¹

T_{C min}– T_{C max}

4

Voltage deviation

Recovery time

±300

±250

±200

v_{o d}

Dynamic

load

regulation

mV

V

i nom

4, 5

I_{o nom}↔ ½ I_{o nom}

800

1500

t_d

μs

0 ↔V

Dynamic line regulation

(output overshoot)

i max

0.5

0.8

v_{o os}

0 – I_{o max}

via R-input¹

using opt. P¹

1.1•V_{i min}– V

V

N/A

4.0

4.6

5.6

7.2

13.2

i max

Output

voltage trim

range

v_{o tr}

0.1• I_{o nom}– I_{o nom}

10.8

T_{C min}– T_{C max}

I_{o nom,}

T_{C min}– T_{C max}

±0.02

α _vo

Temperature coeﬃcient of V_o

%/K

1

If the output voltage is increased above V_{o nom}through R-input control, option P setting, or remote sensing, the output power should be

reduced accordingly, so that P_{o max}and T_{C max}are not exceeded.

See Output Power at Reduced Temperature.

2

3

4

5

First value for 48Q, 2^ndvalue for BQ – GQ

Measured with a probe according to IEC/EN 61204, annex A

Recovery time see Dynamic load regulation.

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Table 5b: Output data for double-output models with both outputs in parallel conﬁguration. General conditions as per table 5a

Model

48Q / BQ – GQ2540

15 V

48Q / BQ – GQ2660

24 V

Unit

Output

min

typ

max

min

typ

max

Characteristics

Conditions

Setting voltage of 1^stoutput

Worst case output voltage

V_{i nom}, I_{o nom}

14.93

15.08

15.23

23.88

23.64

24.12

24.36

V_o1

14.78

V_ow

V_{o P}

I_o

V_{i min}– V

i max

V

A

T_{C min}– T_{C max}

,

Overvoltage limitation

of second control loop

17

0

18

27.5

0

29

I_o= 0 – I_{o max}

Output current ²

6.6/8.0³

4.4/5.5³

V_{i min}– V

i max

6.6

4.4

I_{o nom}Nominal output current

I_{o L}

Output current limit ²

T_{C min}– T_{C max}

4.6/5.8³

6.2/8.0³

6.9/8.4³

8.6/10.4³

20

10

20

10

20

25

40

Switch. frequency

Total incl. spikes

V_{i nom}, I_{o nom}

Output

noise

4

v_o

mV_pp

W

40

BW = 20 MHz

V

_{i min}– V

i max

99/120³

106/132³

P_{o max}Output power¹

T_{C min}– T_{C max}

4

Voltage deviation

Recovery time

±200

±600

v_{o d}

Dynamic

load

regulation

mV

V

i nom

4, 5

I_{o nom}↔ ½ I_{o nom}

1500

800

t_d

μs

0 ↔V

Dynamic line regulation

(output overshoot)

i max

0.8

1.2

v_{o os}

0 – I_{o max}

1.1•V_{i min}– V

V

14.4⁶

21.6

26.4

i max

Output

voltage trim

range

9.0

16.5

via R-input

v_{o tr}

0.1• I_{o nom}– I_{o nom}

using opt. P¹

13.5

T_{C min}– T_{C max}

I_{o nom,}

T_{C min}– T_{C max}

±0.02

α _vo

Temperature coeﬃcient of V_o

%/K

1

If the output voltages are increased above V_{o nom}through R-input control, option P setting or remote sensing, the output power should be

reduced accordingly so that P_{o max}and T_{C max}are not exceeded.

See Output Power at Reduced Temperature.

2

3

4

5

6

First value for 48Q, 2^ndvalue for BQ – GQ

Measured with a probe according to IEC/EN 61204, annex A

Recovery time until V_oremains within ±1% of V_o, see Dynamic load regulation.

For DQ2660 and EQ2660: 16.8 V

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Table 6a: Output data for double-output models with output 1 and output 2 in symmetrical or independent conﬁguration.

General conditions as per table 5a.

Model

48Q /BQ – GQ2320

12 V / 12 V

48Q /BQ – GQ2540

15 V / 15 V

Unit

Output

Output 1

Output 2

Output 1

Output 2

Characteristics

Conditions

min

typ

max

min

typ

max

min

typ

max

min

typ

max

Output setting voltage¹

V_{i nom}, I_{o nom}

11.94

12.06 11.88

12.12 14.93

15.08 14.85

15.15

V_o

see Output

Voltage Regulation

see Output

Voltage Regulation

11.82

12.18

14.78

15.23

V_ow

Worst case output voltage

V_{i min}– V

i max

V

A

T_{C min}– T_{C max}

,

Overvoltage limitation

of second control loop

N/A

4.0

13.5

0.8

15

N/A

3.3

17

0.6

19

V_{o P}

I_o

I_o= 0 – I_{o max}

Output current ²

0.8

7.2/9.2³

0.6

6.0/7.4³

V_{i min}– V

i max

4.0

3.3

I_{o nom}Nominal output current

I_{o L}

Output current limit ²

T_{C min}– T_{C max}

8.4/10.5³

10.4/13³6.9/8.4³

8.6/10.4³

16

8

16

40

8

16

40

8

16

40

8

Switch. frequency

Total incl. spikes

V_{i nom}, I_{o nom}

Output

noise

4

v_o

mV_pp

W

16

40

BW = 20 MHz

V_{i min}– V

i max

96 / 120³

99 / 120³

P_{o max}Output power total¹

T_{C min}– T_{C max}

4

Voltage deviation

±200

±300

±200

±300

v_{o d}

V

mV

Dynamic

load

regulation

i nom

I_{o nom}↔ ½ I_{o nom}

I_{o 2}= ½ I_{o nom}

4, 5

Recovery time

1500

t_d

μs

1.1•V_{i min}– V

i max

7.2

13.2

9.0

16.5

Output

voltage trim

range

via R-input

see Output

Voltage Regulation

see Output

Voltage Regulation

v_{o tr}

V

0.1• I_{o nom}– I_{o nom}

10.8

13.5

using opt. P

T_{C min}– T_{C max}

I_{o nom,}

T_{C min}– T_{C max}

±0.02

α _vo

Temperature coeﬃcient of V_o

%/K

1

If the output voltages are increased above V_{o nom}through R-input control, option P setting, or remote sensing, the output power should be

reduced accordingly so that P_{o max}and T_{C max}are not exceeded.

See Output Power at Reduced Temperature.

2

3

4

5

6

First value for 48Q, 2^ndvalue for BQ – GQ

Measured with a probe according to IEC/EN 61204, annex A

Recovery time until V_oremains within ±1% of V_o, see Dynamic load regulation.

I_{o nom}= I_o1+ I_o2

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Table 6b: Output data for double-output models with output 1 and output 2 in symmetrical or independent conﬁguration.

General conditions as per table 5a

Model

48Q2660

BQ – GQ2660

24 V / 24 V

Unit

Output

24 V / 24 V

Output 1

Output 2

Output 1

Output 2

Characteristics

Conditions

min

typ

max

min

typ

max

min

typ

max

min

typ

max

Output setting voltage¹

V_{i nom}, I_{o nom}

23.88

24.12 23.76

24.24 23.88

24.12 23.76

24.24

V_o

see Output

Voltage Regulation

see Output

Voltage Regulation

23.64

24.36

23.64

24.36

V_ow

Worst case output voltage

V_{i min}– V

i max

V

A

T_{C min}– T_{C max}

,

Overvoltage limitation

of second control loop

N/A

2.2

27.5

0.4

30

N/A

2.2

27.5

0.4

30

V_{o P}

I_o

I_o= 0 – I_{o max}

Output current ²

0.4

4.6

4.0

0.4

5.8

5.1

V_{i min}– V

i max

2.2

I_{o nom}Nominal output current

I_{o L}

Output current limit ²

T_{C min}– T_{C max}

6.2

25

40

8.0

25

40

10

20

25

40

10

20

10

20

25

40

10

20

Switch. frequency

Total incl. spikes

V_{i nom}, I_{o nom}

Output

noise

4

v_o

mV_pp

W

BW = 20 MHz

V_{i min}– V

i max

P_{o max}Output power total¹

106

132

T_{C min}– T_{C max}

4

Voltage deviation

±400

±500

±400

±500

v_{o d}

V

mV

Dynamic

load

regulation

i nom

I_{o nom}↔ ½ I_{o nom}

I_{o 2}= ½ I_{o nom}

4, 5

Recovery time

400

t_d

μs

1.1•V_{i min}– V

14.4

26.4

14.4³

21.6

26.4

i max

Output

voltage trim

range

via R-input

see Output

Voltage Regulation

see Output

Voltage Regulation

v_{o tr}

V

0.1• I_{o nom}– I_{o nom}

N/A

using opt. P

T_{C min}– T_{C max}

I_{o nom,}

T_{C min}– T_{C max}

±0.02

α _vo

Temperature coeﬃcient of V_o

%/K

1

If the output voltages are increased above V_{o nom}through R-input control, option P setting or remote sensing, the output power should be

reduced accordingly so that P_{o max}and T_{C max}are not exceeded.

See: Output Power at Reduced Temperature

For DQ2660 and EQ2660: 16.8 V

Measured with a probe according to IEC/EN 61204, annex A

2

3

4

5

Recovery time until V_oremains within ±1% of V_o, see Dynamic load regulation

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Parallel and Series Connection

Single- or double-output models with equal output voltage can be connected in parallel without any precaution, by interconnecting

the T-pins for equal current sharing; see ﬁg. 9a.

Double-output models with their outputs connected in parallel behave exactly like single-output models and are fully regulated.

There is no inconvenience or restriction using the R-input with sense lines.

Single-output and/or double-output models can be connected in series. For double-output models with both outputs connected in

series, consider that the eﬀect via sense lines, R-input or option P is doubled. See ﬁg. 9b.

Parallel conﬁguration of double-output models with both outputs connected in series is shown in ﬁg. 9c. It is essential that the

Vo1– pins of all paralleled converters are connected together, as the auxiliary signals are referenced to Vo1– or to S–. The eﬀect

via sense lines, R-input or option P is doubled.

ꢀ

050ꢁ1b

050ꢁ2a

T

R_p

D_R

R_p

Voꢀ/Vo1ꢀ

Out OKꢀ Vo2ꢀ

Out OKꢀ

Out OK–

Sꢀ

S–

Vo2–

Vo1ꢀ

Out OK –

i

Vo–/Vo1–

Voꢀ/Vo2ꢀ

Vo–/Vo2–

Viꢀ

Vi–

Sꢀ

S–

Viꢀ

Vi–

Vo1–

T

D_R

Voꢀ/Vo1ꢀ

Out OKꢀ Vo2ꢀ

Sꢀ

S–

Out OKꢀ

Out OK–

Vo2–

Vo1ꢀ

Out OK –

i

Vo–/Vo1–

Voꢀ/Vo2ꢀ

Vo–/Vo2–

i

Viꢀ

Vi–

Sꢀ

S–

Viꢀ

Vi–

Vo1–

ꢀ

–

i

–

ꢀ

Fig. 9a

Fig. 9b

Parallel connection of single- and double-output models.

Series connection of double-output models.

06114a

ꢀ

T

Vo2ꢀ

Vo2–

Vo1ꢀ

Double

output

R_p

Out OKꢀ

Out OK –

Sꢀ

S–

i

Notes:

Viꢀ

Vi–

•

If the second output of double-output models is not used,

connect it in parallel to the main output to maintain good

regulation.

Vo1–

R

Parallel connection of several double-output models should

always include main and second outputs to produce good

regulation.

Double

output

T

Vo2ꢀ

Vo2–

Vo1ꢀ

Series connection of second outputs without involving their

main outputs should be avoided as regulation may be poor.

Out OKꢀ

• The maximum output current is limited by the output with the

lowest current limit, if several outputs are connected in series.

Out OK –

Sꢀ

S–

i

• Rated output voltages above 48 V (SELV = Safety Extra Low

Voltage) need additional measures in order to comply with

international safety requirements.

Viꢀ

Vi–

Vo1–

R

i

–

ꢀ

Fig. 9c

Parallel connection of double-output models with series-connected outputs.

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Redundant Conﬁguration

Fig. 10a shows a circuit with ORing diodes D_Rin the positive output lines, forming a redundant conﬁguration. For accurate output

voltage regulation, the sense lines are connected after the ORing diodes. The T pins should be connected together to produce

reasonable current sharing between the parallel-connected converters.

If one of the converters fails, the remaining converters can deliver the whole output power.

Note: The current-share logic can only increase the output voltage marginally and remains functional even in the case of a failing converter.

Fig. 10b shows a quite similar circuit with ORing diodes D_R, but with diﬀerent output loads. To compensate for the voltage drop of the

ORing diodes (if necessary), an auxiliary circuit is added to each power supply consisting of a small diode D_Sand a small resistor R_S.

We recommend a current of approximately 10 mA through D_Sand R_S. Only Load 0 beneﬁts from a secured supply voltage.

The current sharing may be improved by interconnecting the T pins of the converters. This circuit is a bit less accurate, but more

ﬂexible and less sensitive.

Caution: Do not connect the sense lines after the ORing diodes, but directly with the respective outputs. If for some reason one of the

converters switches oﬀ and the ORing diode is blocking, a reverse voltage can appear between the sense pin and the respective output pin

and damage the converter.

ꢀ

050ꢁ1b

060ꢁ7b

T

D_R

R_p

Voꢀ/Vo1ꢀ

D_S

R_S

Out OKꢀ

Out OK–

Out OKꢀ

Out OK–

Sꢀ

S–

Sꢀ

S–

i

Vo–/Vo1–

Voꢀ/Vo2ꢀ

Vo–/Vo2–

i

Vo–/Vo1–

Voꢀ/Vo2ꢀ

Vo–/Vo2–

Viꢀ

Vi–

Viꢀ

Vi–

T

D_R

Voꢀ/Vo1ꢀ

D_S

Sꢀ

S–

Sꢀ

S–

Out OKꢀ

Out OK–

Out OKꢀ

Out OK–

R_S

Vo–/Vo1–

Voꢀ/Vo2ꢀ

Vo–/Vo2–

Vo–/Vo1–

Voꢀ/Vo2ꢀ

Vo–/Vo2–

i

Viꢀ

Vi–

Viꢀ

Vi–

–

ꢀ

–

ꢀ

i

Fig. 10a

Fig. 10b

Simple redundant conﬁguration of double-output models

with parallel-connected outputs.

Redundant conﬁguration of double-output models with par-

allel-connected outputs.

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Output Voltage Regulation

The dynamic load regulation is shown in ﬁgure 11.

The static load regulation measured at the sense pins is negligible. Correct connection of the sense lines almost eliminates any

load regulation; see Sense Lines.

In a symmetrical conﬁguration the output 1 with open R input is regulated to V_{o1 nom}, regardless of the output currents. If the load

on output 2 is too small (<10% of I_{o nom}), its voltage will rise and may activate the overvoltage protection, which will then reduce

the voltage on both outputs.

V_o2depends upon the load distribution: If each output is loaded with at least 10% of I_{o nom}, the deviation of V_o2remains within ±5%

of V_{o nom}. The following ﬁgures explain the regulation with diﬀerent load distributions up to the current limit. If I_o1= I_o2or the two

outputs are connected in series, the deviation of V_o2remains within ±1% of the value ofV_{o nom}, provided that the load is at least I_omin

.

Note: If output 2 is not used, we recommend to connect it in parallel to Vo1. This results in improved eﬃciency and stability.

V

_o2[V]

V_o

05111b

V_od

V_oꢀ1ꢁ

V_od

V_oꢀ1ꢁ

I_o1= 7.2 A

I_o1= 5.6 A

I

_o1= 4.0 A

V_o1ꢀ 0.5 V

I_o1= 2.4 A

t_d

I

_o1= 0.8 A

_o1= 0.4 A

t

V_o1

I_o/I_{o nom}

1

V_o1– 0.5 V

0.5

≥ 10 µs

I

_o2[A]

0

t

0

2

4

6

8

10

05102c

Fig. 11

Fig. 12

Deviation of V_oversus dynamic load change

Double-output models with 12 V: Voltage deviation of V_o2

versus I_o2for diﬀerent currents on output 1

V_{o2 max}= 28 V

V_{o2 max}= 18 V

V_o2[V]

V

_o2[V]

05113a

05112a

I_o1= 4.0 A

I_o1= 6.0 A

_o1= 4.6 A

I_o1= 3.3 A

_o1= 2.0 A

I_o1= 3.1 A

I_o1= 2.2 A

I_o1= 1.3 A

I_o1= 0.44 A

I

V_o1ꢀ 1.0 V

V_o1ꢀ 0.5 V

I

I_o1= 0.66 A

V_o1

V_o1– 1.0 V

V_o1– 0.5 V

I_o2[A]

5

0

1

2

3

4

6

0

2

4

6

8

Fig. 13

Fig. 14

Double-output models with 15 V: Voltage deviation of V_o2

Double-output models with 24 V: Voltage deviation of V_o2

versus I_o2for diﬀerent currents on output 1

Output Overvoltage Protection

Output voltage overshoot may occur, if the converter is either hot plugged-in or disconnected, the input voltage is switched on or

oﬀ, the converter is switched with an inhibit signal, or after a reset of a short circuit and power failure. Output overvoltage can also

result due to incorrectly wired sense lines.

A fully independent output voltage monitor (second control loop) limits the voltage V_oor V_o2to approximately 1.25 • V_{o nom}(in double-

output models, the 2^ndoutput is monitored). This circuitry further protects the load in the unlikely event of a malfunction of the main

control circuit.

There is no speciﬁc built-in protection against externally applied overvoltage.

Note: If output 2 is not loaded, the 2^ndcontrol loop may reduce V_o1under boundary conditions.

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Output Current Protection

All outputs are fully protected against continuous open-circuit condition or continuous short-circuit by an electronic current limitation

located on the primary side.

Single-output models and series- or parallel-connected double-output models have a quasi rectangular constant current limitation

characteristic.

In double-output models, only the total current is limited, allowing free choice of load distribution between the two outputs, up to

I_o1+ I_o2≤ I_{o max}. However, a small current should remain on both outputs to guarantee good voltage regulation. In case of overload

(I_o1+ I_o2> I_{o max}) both output voltages are reduced simultaneously.

Current distribution in overload is dependent upon the type of overload. A short-circuit in one output will cause the full current ﬂow

into that output, whereas a resistive overload results in more even distribution and in a reduced output voltage.

V /V

o

V_o/V_{o nom}

o nom

I_{o nom}

I_{o L}

I

o max o L

o nom

05104b

05114c

1.0

0.ꢀ5

1.0

0.8

0.6

0.5

0.4

0.2

I_o/I_{o nom}

0

I

0

o

0.2

0.4

0.6

0.8

1.0

1.2

1.4

Fig. 15a

Fig. 15b

BQ – GQ models: Current limitation of single- or double-output

48Q models: Current limitation of single- or double-output

models with series-connected outputs (no opt. B or B1)

Eﬃciency

η [ꢁ]

ꢂM082

ꢂM083

ꢀ0

V_{i nom}

V_{i min}

85

V_{i max}

80

I_o[A]

75

3

5

1

2

3

5

1

2

4

Fig. 16a

Fig. 16b

Eﬃciency versus input voltage and current per output

(BQ2320)

Eﬃciency versus input voltage and current per output

(EQ2320)

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Q Series

66 - 132 W DC-DC Converters

Hold-up Time

The Q Series converters provide virtually no hold-up time. If hold-up time or interruption time is required, use external output

capacitors or decoupling diodes together with input capacitors of adequate size.

Formula for additional external input capacitor:

2 • P_o• t_h• 100

C_{i ext}= –––––––––––––––

2

η • (V_ti²– V_{i min}

)

where as:

C_{i ext}= external input capacitance [mF]

P

= output power [W]

= eﬃciency [%]

= hold-up time [ms]

η^o

t_h

V_{i min}= minimum input voltage [V]

V_ti= threshold level [V]

Thermal Considerations and Protection

If a converter is located upright in quasi-stationary air (convection cooling) at the indicated maximum ambient temperature T_Amax(see

table Temperature speciﬁcations), and is operated at its nominal input voltage and output power, the temperature T_Cmeasured at the

Measuring point of case temperature (see Mechanical Data) will approach T_{C max}after the warm-up phase. However, the relationship

between T_Aand T_Cdepends heavily on the operating conditions and the integration into a system. The thermal conditions are

inﬂuenced by input voltage, output current, airﬂow, and temperature of surrounding components and surfaces. T_{A max}is therefore,

contrary to T_{C max}, an indicative value only.

Caution: The installer must ensure that under all operating conditions T_Cremains within the limits stated in the table Temperature speciﬁcations.

Note: Suﬃcient forced cooling or an additional heat sink improves the reliability or allows T_Ato be higher than T_{A max}, as long as T_{C max}is not

exceeded. In rack systems without proper thermal management, the converters must not be packed too densely! In such cases the use of a

5 or 6 TE front panel is recommended.

A temperature sensor generates an internal inhibit signal, which disables the outputs, if the case temperature exceeds T_{C max}. The

outputs are automatically re-enabled when the temperature drops below this limit. This feature is not ﬁtted to 48Q models.

Operating BQ – GQ models with output current beyond I_{o nom}requires a reduction of the ambient temperature T_Ato 50 °C or forced

cooling. When T_Cmaxis exceeded, the converter runs into its thermal protection and switches oﬀ; see ﬁg. 17a.

Note: According to EN 50155, Class OT4, the converters BQ – GQ can be operated with P_{o nom}continously at T_A= 70 °C, and then for 10 min

at T_A= 85 °C without shutdown.

Fig. 17b shows the operation of 48Q models beyond T_A= 50 °C with forced cooling.

P_o

forced

cooling

P_o

P_{o nom}

05116b

P_{o max}

P_{o nom}

0.75 P

05110b

forced

cooling

convection

cooling

o nom

T_{C max}

convection

cooling

T_{C max}

0.4 P_{o nom}

T_A

–10

30

40

50

60

70 80 °C

T_A

ꢀ0 100 °C

T_{A min}50

60

70

80

Fig. 17a

Output power derating versus T_Afor BQ – GQ models

Fig. 17b

Output power derating versus T_Afor 48Q models

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Q Series

66 - 132 W DC-DC Converters

Auxiliary Functions

Inhibit for Remote On/Oﬀ

Note: If this function is not used, the inhibit pin 28 must be connected with pin 32 to enable the output(s). A non-connected pin 28 will be

interpreted by the internal logic as an active inhibit signal and the output(s) will remain disabled (fail safe function).

An inhibit input enables (logic low, pull down) or disables (logic high, pull up) the output, if a logic signal, e.g. TTL, CMOS is

applied. In systems consisting of several converters, this feature may be used, for example, to control the activation sequence of

the converters by means of logic signals, or to allow the power source for a proper start-up, before full load is applied.

Table 7: Inhibit characteristics

Characteristics

Conditions

min

-50

2.4

typ

max

0.8

50

Unit

V_o= on

V_o= oﬀ

V_{i min}– V_{i max}

V_inhInhibit voltage

V

T_{C min}– T_{C max}

V_inh= -50 V

V_inh= 0 V

-500

-40

I_inh

Inhibit current

µA

V_inh= 50 V

+500

The output response, when enabling and disabling the output by the inhibit input, is shown in ﬁgure 19.

V_o/V_{o nom}

0615ꢀb

t_r

t_f

060ꢁ1a

1.01

0.ꢀꢀ

I_inh

12

4

28

30

Sꢀ

Voꢀ

i

I_o

V_inh

0.1

0

t

I_i

6

Viꢀ

Vi–

t_on

V_o

V_i

8

V_{i min}

Vo–

0

32

26

Vo– 10

V

_inh[V]

14

S–

2.4

0.8

Fig. 18

Deﬁnition of input and output parameters

Fig. 19

Output response as a function of V_i(on/oﬀ switching) or

inhibit control

Table 8: Inhibit response times (typ. values, outputs with ohmic load, R-input left open-circuit)

Characteristics

Conditions

BQ

48Q

CQ

GQ

DQ*

EQ*

Unit

V_{i nom,}R_L= V_{o nom}/ I_{o nom}

V_inh= 2.4 → 0.8 V

Output voltage rise time

(indicative values)

t_r

1.5

1.3

1.5

1.6

V

3.3 V

5 V

0.5

0.8

1.3

3

0.5

0.6

1.2

3

0.5

0.6

1.3

3

0.5

0.8

1.5

3

0.5

0.7

1.1

3

0.5

0.7

1.5

3

t_r

V_{i nom,}R_L= V_{o nom}/ I_{o nom}

V_inh= 0.8 → 2.4 V

Output voltage fall time

(indicative values)

µA

V_{i min}

12 / 15 V

24 V

* Models with version V104 or higher

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Q Series

66 - 132 W DC-DC Converters

Current Sharing

The current sharing facility should be used when several converters are operated in parallel or redundant connection. This feature

avoids that some converters are driven into current limitation and thus produce excessive losses. As a result, the stress of the

converters is reduced, and the system reliability is further improved.

Simple interconnection of the T pins causes the converters to share the output current. The current tolerance of each converter is

approx. ±20% of the sum of its nominal output currents I_{o1 nom}+ I_{o2 nom}

.

In n+1 redundant systems, a failure of a single converter will not lead to a system failure, if the outputs are decoupled by diodes;

see ﬁg. 10.

Note: T-function only increases the output voltage, until the currents are evenly shared. If in a redundant system, one converter fails, the

remaining converters keep sharing their currents evenly.

Since the T pins are referenced to the pins S–, the S– pins of all converters must have the same electrical potential.

Double-output converters with both outputs connected in series can also be paralleled with current sharing, if pins Vo1– of all

converters are connected together, see ﬁg. 9c.

If the output voltages are programmed to a voltage other than V_{o nom}by means of the R pin or option P, the outputs should be

adjusted individually within a tolerance of ±1%.

Important: For applications using the hot-swap capabilities, dynamic output voltage changes during plug-in/plug-out must be considered.

Programmable Output Voltage (R-Function)

This feature is not available on models with 3.3 V output or with option P.

Note: Models with 3.3 V output or with option P: The R-input must be left open-circuit.

The converters oﬀer a programmable output voltage. The adjust is performed either by an external control voltage V_extor an

external resistor R₁or R₂, connected to the R-input. Trimming is limited to the values given in the table below (see also Electrical

Output Data). With open R-input, the output voltage is set to V_{o nom}

.

With double-output models, both outputs are aﬀected by the R-input settings.

If output voltages are set higher than V_{o nom}, the output currents should be reduced accordingly, so that the maximum speciﬁed

output power is not exceeded.

a) Adjustment by means of an external control voltage V_extbetween R (pin 16) and S– (pin 14); see ﬁg. 20.

V_o

V_ext

–––––––

V_{o nom}

–––––

2.5 V

V_ext≈ 2.5 V •

V_o≈ V_{o nom}•

Caution: To prevent damage, V_extshould not exceed 20 V, nor be negative.

b) Adjustment by means of an external resistor:

The resistor can either be connected:

• between R (pin 16) and S– (pin 14) to set V_o< V_{o nom}, or

• between R (pin 16) and S+ (pin 12) to set V_o> V_{o nom}

.

V_ext

060ꢁ4b

060ꢁ3b

ꢀ

–

Double-

output

model

R

Single-output

model

16

4

16

4

R₂

Vo1ꢀ

Voꢀ

R₁

6

Sꢀ

S–

12

14

8

Load 1

Load 2

Sꢀ 12

S– 14

i

Load

Viꢀ

Vi–

Vo1–

Vo2ꢀ

Vo2–

Viꢀ

Vi–

Vo–

8

6

Vo–

10

Fig. 20

Output adjust using an external control voltage V_ext.

Fig. 21

Output adjust using a resistor R₁(to lower Vo) or

R₂(to increase V_o).

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Q Series

66 - 132 W DC-DC Converters

Table 9a: R₁for V_o< V_{o nom}; approximate values (V_{i nom}, I_{o nom}, series E 96 resistors); R₂= not ﬁtted

V_{o nom}= 5.1 V

V_{o nom}= 12 V

V_o[V]¹

V_{o nom}= 15 V

V_o[V]¹

V_{o nom}= 24 V

V_o[V]¹

V_o[V]

R ₁[kΩ]

4.0

4.1

4.2

4.3

4.4

4.5

4.6

4.7

4.8

4.9

5.0

14.7

16.5

18.2

21.5

25.5

30.1

37.4

47.5

64.9

97.6

200

15²

16²

17²

18²

19

20

20.5

21

21.5

22

22.5

23

30.0²

32.0²

34.0²

36.0²

38.0

40.0

41.0

42.0

43.0

44.0

45.0

46.0

47.0

6.65²

8.06²

9.76²

12.1

15.4

20.0

23.7

28.0

34.8

44.2

60.4

90.9

190

9

9.5

10

10.5

11

11.5

12

12.5

13

13.5

14

18

19

20

21

22

23

24

25

26

27

28

29

6.04

6.98

8.06

9.31

11

13.3

16.2

20

26.1

36.5

56.2

115

7

7.5

8

8.5

9

9.5

10

10.5

11

14

15

16

17

18

19

20

21

22

23

5.62

6.65

8.06

9.76

12.1

15.4

20

28

44.2

93.1

11.5

14.5

23.5

Table 9b: R₂for V_o> V_{o nom}; approximate values (V_{i nom}, I_{o nom}, series E 96 resistors); R₁= not ﬁtted

V_{o nom}= 5.1 V

V_{o nom}= 12 V

V_o[V]¹

V_{o nom}= 15 V

V_o[V]¹

V_{o nom}= 24 V

V_o[V]

R ₂[kΩ]

V_o[V]¹

R ₂[kΩ]

5.2

5.3

5.4

5.5

5.6

215

110

75

57.6

46.4

12.2

12.4

12.6

12.8

13.0

13.2

24.4

24.8

25.2

25.6

26.0

26.4

931

475

316

243

196

169

15.3

15.5

15.7

16.0

16.2

16.5

30.6

31

31.4

32

32.4

33

1020

619

453

316

267

221

24.5

25

25.5

26

49

50

51

52

52.8

1690

866

590

442

374

26.4

1

2

First column: single or double output models with separated/paralleled outputs, second column: outputs in series connection.

Not possible for DQ2660 and EQ2660.

Output Good Signal (Out-OK)

The isolated Out-OK output gives a status indication of the converter and the output voltage. It can be used for control functions

such as data protection, central system monitoring or as a part of a self-testing system. It can be connected to get a centralized

fault detection or may be used for other system-speciﬁc applications at the primary or the secondary side of the converter.

Connecting the Out-OK as per ﬁg. 22, V_OK<1.0 V indicates that the V_oor V_o1of the converter is within the range V_t1low– V_t1high. V_{t1 low}

corresponds to 0.95 - 0.98 V_{o1 nom}, V_t1highto 1.02 – 1.05 V_o1nom

.

Note: Using the R-input or the option P, the monitor level is tracking the programmed output voltage.

In an error condition, if the output voltage is out of range due to overload or an external overvoltage, V_OKwillapproach V_p.

The output is formed by an NPN transistor. The emitter (Out OK–) can be connected to primary Vi– or secondary Vo1– to get

an open-collector output. In a conﬁguration of several Q Series converters, the Out OK pins can be series-connected in order to

get a system level signal (as shown in ﬁg. 9). If one of the converters fails, the series-connected output rises to high impedance.

V_p

Dimensioning of resistor value R_p≥ ––––––

0.5 mA

Caution: Out-OK is protected by an internal series resistor and a Zener diode. To prevent damage, the applied current I_OK

should be limited to ±10 mA.

Table 10: Out-OK data

ꢀ

V_p

060ꢁ6a

R_p

Characteristics

Conditions

min typ max Unit

I_OK

1 k

22

24

Out OKꢀ

Out OK–

V_OKOut-OK voltage Output OK, I_OK< 0.5 mA

0.8

1.0

25

V

Output

control

circuit

20 V

V_OK

I_OK

Out-OK current Output fail, V_OK≤ 15 V

µA

Fig. 22

Out OK function

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Q Series

66 - 132 W DC-DC Converters

Sense Lines

This feature allows for compensation of voltage drops at the main output across connector contacts and load lines. If the sense

lines are connected at the load rather than directly at the connector, the user must ensure that the diﬀerential voltages (measured

on the connector) ∆V_S+(between Vo+ and S+) and ∆V_S–(between Vo– and S–) do not exceed the values in the table 11.

Table 11:Voltage compensation by sense lines

Nominal output

voltage

∆V_S+

∆V_{S_}

Sum of

∆V_S++ ∆V_{S_}

Unit

3.3 V, 5.1 V

≤ 0.5

≤ 0.25

≤ 0.5

12 V, 15 V

24 V

≤ 1.0

≤ 0.5

≤ 1.0

≤ 2.0

V

Applying generously dimensioned cross-section load leads help avoiding troublesome voltage drops. To minimize noise pick-up,

wire the sense lines parallel or twisted. For unsymmetrical loads, we recommend connecting the sense lines directly at the female

connector.

To ensure correct operation, both sense lines must be connected to their respective power output. With double-output models, the

sense lines must be connected to output 1 only. Caution should be exercised, if outputs are series-connected, as the compensated

voltage is eﬀectively doubled. Because the eﬀective output voltage and output power are increased by the sense lines, the

minimum input voltage rises proportionally to the compensated output voltage.

Caution: Sense lines should always be connected. Incorrectly connected sense lines may cause an overvoltage at the output, which could

damage the output load and activate the second control loop. The sense lines can handle only small currents.

Note: Sense line connection in a redundant conﬁguration is shown in ﬁg. 10.

Test Sockets and LEDs

Test jacks (for pin diameter 2 mm) are located at the front of the converter and allow monitoring the main output voltage at the

sense line terminals. The test sockets are protected by internal series resistors. Double-output models show the sense line voltage

of output 1 at the test jacks. 48Q models have no test sockets.

48Q models exhibit a green LED In-OK to monitor the input voltage. BQ – GQ models have an additional LED Out-OK, which is

activated simultaneously to the Out-OK signal.

Table 12: Display status of LEDs

LED In OK

green

LED Out OK Operating condition

green

x

normal operation

green

incorrect sense line connection

green

oﬀ

overtemperature

overload

output overvoltage

output undervoltage

oﬀ

green

not possible

oﬀ

no input voltage

input voltage too low

input voltage too high

inhibit input open/high

x = dependent on actual operating condition

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Q Series

66 - 132 W DC-DC Converters

Electromagnetic Compatibility (EMC)

Ametal oxide VDR together with an input fuse and a symmetrical input ﬁlter form an eﬀective protection against high input transient

voltages, which typically occur in most installations, especially in battery-driven mobile applications. The Q Series has been

successfully tested to the following speciﬁcations:

Electromagnetic Immunity

Table 13: Electromagnetic immunity (type tests)

Phenomenon

Standard

Level Coupling mode ¹

Value

applied

Waveform

Source Test procedure

imped.

In

Perf.

oper. crit.²

Supply related

surge

RIA 12³

1.5 • V_Bat

1.4 • V_Bat

B

+i/–i

0.1/1/0.1 s

0.2 Ω

5 Ω

1 positive surge

yes

A

EN 50155:2017

13.4.3

Direct transients RIA 12

D

G

H

L

±1800 V_p

±8400 V_p

1800 V_p

8400 V_p

5/50 μs

5 pos. & 5 neg.

impulses

–i/c, +i/–i

0.05/0.1 μs

5/50 μs

Indirect couples

transients

100 Ω

–o/c, +o/–o, –o/–i

0.05/0.1 μs

Electrostatic

discharge

(to case)

IEC/EN

61000-4-2

contact discharge 8000 V_p

10 pos. & 10 neg.

discharges

330 Ω

150 pF

4 ⁴

x ⁵

1/50 ns

yes

A

15000 V_p

air discharge

Electromagnetic IEC/EN

ﬁeld

antenna

20 V/m

10 V/m

5 V/m

AM 80% / 1 kHz

N/A

80 – 1000 MHz

61000-4-3

800 – 1000 MHz

1400 – 2000 MHz

2000 – 2500 MHz

5100 – 6000 MHz

6

AM 80% / 1 kHz

yes

A

3 V/m

7

Electrical fast

transients / burst 61000-4-4

IEC/EN

3 ⁷

4

direct coupl. (ﬁg. 9) ±2000 V_p

60 s positive

60 s negative

transients per

coupling mode

yes

A

B

+i/c, –i/c,+i/–i

burstsof 5/50ns;

5 kHz over 15 ms;

burst period: 300 ms

±4000 V_p

50 Ω

capacit. (ﬁg. 10),

±2000 V_p

o/c

3

yes

B

A

3

Surges

IEC/EN

61000-4-5

5 pos. & 5 neg.

surges per

coupling mode

+i/c, – i/c

+i/–i

±2000 V_p

42 Ω /

0.5 μF

3 ³

10

1.2 / 50 µs

3

1000 V_p

FTZ 19 Pﬂ 1

3 pos. 5

repetitions

+i/–i

150 V_p

0.1/0.3 ms

<100 A

yes

A

Conducted

disturbances

IEC/EN

61000-4-6

10 VAC

3 ⁸

11

i, o, signal wires

-

AM 80% / 1 kHz

150 Ω 0.15 – 80 MHz

(140 dBµV)

Power frequency IEC/EN

magnetic ﬁeld

100 A/m

60 s in all 3 axes

61000-4-8

1

i = input, o = output, c = case.

A = normal operation, no deviation from specs; B = temporary loss of function or deviation from specs possible

Measured with an external input cap speciﬁed in table 4. Exceeds EN 50121-3-2:2016 table 3.3 and EN 50121-4:2016 table 4.3.

Exceeds EN 50121-3-2:2016 table 5.3 and EN 50121-4:2016 table 2.1.

Corresponds to EN 50121-3-2:2016 table 5.1 and exceeds EN 50121-4:2016 table 1.1.

Corresponds to EN 50121-3-2:2016 table 5.2 and EN 50121-4:2016 table 2.2

Corresponds to EN 50121-3-2:2016 table 3.2 and EN 50121-4:2016 table 4.2.

Covers or exceeds EN 50121-3-2:2016 table 3.1 and EN 50121-4:2016 table 4.3 (radio frequency common mode).

Corresponds to EN 50121-4:2016 table 2.3.

2

3

4

5

6

7

8

9

10

Valid for 48Q and CQ only.

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Q Series

66 - 132 W DC-DC Converters

Electromagnetic Emissions

All conducted emissions (fig. 23) have been tested according to EN 55011, group 1, class A (similar to EN 55032). These limits

are much stronger than requested in EN 50121-3-2:2016, table 2.1 and correspond to EN 50121-4:2016, table 1.1. The limits in

ﬁg. 23 apply to quasipeak values, which are always lower then peak values.

In addition, the values for average must keep a limit 10 dBµV below the limits in ﬁg. 23 (not shown).

Radiated emissions have been tested according to EN 55011 group 1, class A . These limits are similar to the requirements of

EN 50121-3-2:2016 and EN 50121-4:2016 calling up EN 61000-6-4+A1:2011, table 1. The test is executed with horizontal and

vertical polarization. The worse result is shown in ﬁg. 24.

PMM 8000 PLUS: Peak, conducted Viꢀ, Clp 2007-06-07, 15:38 h

PMM 8000 PLUS: Peak, conducted Viꢀ, Clp 2007-06-07, 14:46 h

dBµV

80

dBµV

80

CQ2320-7R V104, U

=48 V, U =12 V I = 8 A, decoupled load

BQ1001-7R V104, U

=24 V, U =5.1 V, I

= 16 A, decoupled load

i

o

i

o

ꢁM01ꢂ

ꢁM020

EN 55022 B

60

40

20

0

60

40

20

0

,

0.2

0.5

1

2

5

10

20 MHz

0.2

0.5

1

2

5

10

20 MHz

Fig. 23a

Fig. 23b

Conducted peak disturbances at the input: BQ1001-7R V104,

Conducted peak disturbances at the input: CQ2320-7R V104,

V_{i nom}, I_{o nom}, decoupled load lines

V_{i nom}, I_{o nom}, outputs parallel connected, decoupled load lines

PMM 8000 PLUS: Peak, conducted Viꢀ, Clp 2007-06-05, 15:15

h

dBµV

80

EQ2660-7R V102,

U

=110 V, U

=24 V I = 4 A, decoupled load

i

o

ꢁM021

EN 55011 B

60

40

20

0

0.2

0.5

1

2

5

10

20 MHz

Fig. 23c

Conducted peak disturbances at the input: EQ2660-7R V102,

V_{i nom}, I_{o nom}, outputs parallel connected, decoupled load lines

TꢀV-Divina, ESVS 30:R&S, BBA ꢁ106/UHALP ꢁ107:Schwarzb., QP, 200ꢁ-04-21

dBµV/m

TꢁV-Divina, ESVS 30:R&S, BBA ꢂ106/UHALP ꢂ107:Schwarzb., QP, 200ꢂ-04-17

Testdistance 10 m, BQ2660-7R V104, U

=24 V, U =24 V I

= 4.4 A

i

o

dBµV/m

Testdistance 10 m, EQ2660-7R V104, U

=110 V, U

=24 V I

= 4.4 A

i

o

50

EN 55011 A

50

EN 55011 A

40

< 30 dB(µV/m)

30

20

30

20

10

0

10

0

30

50

100

200

500

1000 MHz

30

50

100

200

500

1000 MHz

Fig. 24a

Fig. 24b

Radiated disturbances in 10 m distance: BQ2660-7R V104,

V_{i nom}, I_{o nom}

Radiated disturbances in 10 m distance: EQ2660-7R V104,

V_{i nom}, I_{o nom}

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Q Series

66 - 132 W DC-DC Converters

Immunity to Environmental Conditions

Table 14: Mechanical and climatic stress

Test method

Standard

Test Conditions

Temperature:

Status

Cab Damp heat

steady state

IEC/EN 60068-2-78

MIL-STD-810D section 507.2

40^±2°C

Converter

not operating

Relative humidity:

Duration:

93^+2/-3

%

56 days

55°C and 25°C

2

Db

Damp heat test,

cyclic

EN 50155:2017, clause 13.4.7

IEC/EN 60068-2-30

Temperature:

Converter

not operating

Cycles (respiration eﬀect)

Duration:

2x 24 h

Be

Ad

Ka

Dry heat test

steady state

EN 50155:2017, clause 13.4.5

ST1, IEC/EN 60068-2-2

Temperature:

70 °C (85 °C)

6 h (10 min)

-40 °C, 2 h

+25 °C

Converter

operating

Duration:

Cooling test

steady state

EN 50155:2017, clause 13.4.4

IEC/EN 60068-2-1

Temperature, duration:

Performance test:

Converter

not operating

Salt mist test

sodium chloride

(NaCl) solution

EN 50155:2017, clause 13.4.10 Temperature:

IEC/EN 60068-2-11

35 ^±2°C

Converter

not operating

Duration:

48 h

Fc

Fh

Ea

Vibration

(sinusoidal)

IEC/EN 60068-2-6

MIL-STD-810D section 514.3

Acceleration amplitude:

0.35 mm (10 – 60 Hz)

5 g_n= 49 m/s²(60 - 2000 Hz)

10 – 2000 Hz

Converter

operating

Frequency (1 Oct/min):

Test duration:

7.5 h (2.5 h in each axis)

Random vibration

broad band (digital

control) & guidance

IEC/EN 60068-2-64

Acceleration spectral density: 0.05 g_n²/Hz

Frequency band:

8 – 500 Hz

Converter

operating

Acceleration magnitude:

Test duration:

4.9 g_n

rms

1.5 h (0.5 h in each axis)

50 g_n= 490 m/s²

11 ms

Shock

(half-sinusoidal)

IEC/EN 60068-2-27

MIL-STD-810D section 516.3

Acceleration amplitude:

Bump duration:

Converter

operating

Number of bumps:

Acceleration amplitude:

Bump duration:

18 (3 in each direction)

5.1 g_n

Shock

EN 50155:2017, clause 13.4.11

EN 61373 sect. 10

Converter

operating

30 ms

class B, body mounted ¹

Number of bumps:

18 (3 in each direction)

2

Simulated long life

testing at increased

random vibration

levels

EN 50155:2017, clause 13.4.11

EN 61373 sect. 8 and 9

Acceleration spectral density: 0.02 g_n/Hz

Frequency band:

Acceleration magnitude:

Test duration:

5 – 150 Hz

Converter

operating

class B, body mounted ¹

0.8 g_{n rms}

15 h (5 h in each axis)

1

Body mounted = chassis of a railway coach

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Q Series

66 - 132 W DC-DC Converters

Temperatures

Table 15: Temperature speciﬁcations, valid for an air pressure of 800 – 1200 hPa (800 – 1200 mbar)

Model

-2

-7 (Option)

-9

Unit

Characteristics

Conditions

min

- 10

- 25

typ

max

50

min

- 25

- 40

typ

max

71 ¹

95^{1, 2}

85

min

- 40

- 55

typ

max

71 ¹

95^{1, 2}

85

T_A

T_C

T_S

Ambient temperature Converter operating

Case temperature

80

° C

Storage temperature Not operational

85

1

2

See Thermal Considerations. Operation with P_{o max}requires a reduction to T_{A max}= 50 °C and T_{C max}= 85 °C.

Overtemperature lockout at T_C>95 °C (PTC).

Reliability

Table 16: MTBF and device hours

Ratings at speciﬁed

Model

Ground benign

Ground ﬁxed

40 °C 70 °C

Ground mobile

Naval,

sheltered

Device hours ¹Unit

case temperature

40 °C

50 °C

40 °C

MTBF according to

MIL-HDBK-217F

CQ1000

588 000

196 000 96 000

74 000

6 400 000

h

MTBF according to

MIL-HDBK-217F, notice 2

BQ1001-9R

EQ2660-9R

908 000

913 000

243 000 160 000

237 000 155 000

98 000

97 000

192 000

188 000

1

Statistical values, based on an average of 4300 working hours per year and in general ﬁeld use over 5 years; upgrades and customer-induced

errors are excluded.

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Q Series

66 - 132 W DC-DC Converters

Mechanical Data

The converters are designed to be inserted in a 19” rack according to IEC 60297-3. Dimensions in mm.

20.3

pin 4

H

G

F

E

Key Code System

A

B

C

D

Front plate

104

20

Silkscreen

without opt. Bx

Silk-

screen with

opt. Bx

M3; 5 deep

Measuring point of

case temperature T_C

AIRFLOW

Main-

face

Rear-

face

Rear-

face

60

1ꢀ.8

38.8 *)

Back plate

111

Standard

Opt. B1

104

100

*) 32.3 mm for opt. B

**) 231.0 ...231.ꢀ mm

for long case

(add 5000 to the

part number)

ꢀ5

= Ø 4.2

= Ø 3.4

= Ø 3

LED ꢁIn-OKꢁ green¹

Potentiometer (option P)

Test sockets¹

European

Projection

¹Not fitted to 48Q models

LED ꢁOut-OKꢁ green

Fig. 25

Case Q01, weight approx.500 g;

Aluminum, fully enclosed, black ﬁnish, EP powder coated, self cooling

Notes:

Long case, elongated by 60 mm for 220 mm rack depth is available on request. Add 5000 to the standard part number.

An additional heat sink (option B1) is available; it reduces the case temperature T_C, and allows more output power at higher ambient temperature T_A.

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Q Series

66 - 132 W DC-DC Converters

Safety and Installation Instructions

Connector Pin Allocation

The connector pin allocation table deﬁnes the electrical potentials and the physical pin positions on the H15 connector. Pin no. 26,

the protective earth pin, is a leading pin, ensuring that it makes contact with the female connector ﬁrst.

Table 17: Pin allocation of the H15 connector

4

Electrical determination

Output voltage (positive)

Output voltage (negative)

Sense line (positive) ²

Q1000

Vo+

Vo-

Q2000

Vo1+

Vo2+

Vo1-

Vo2-

S+

30

26 22

18 14 10

6

8

10025a

32

28 24

20 16

12

8

4

10

12

14

16

18

20

22

24

26

28

30

32

Vo-

S+

Sense line (negative) ²

S-

Fig. 26

View of male H15 connector

Output voltage adjust ¹

Current sharing control

Do not connect (internal Gnd.)

Output good signal (positive)

R ¹

T

-

Out OK +

Out OK -

Output good signal (negative) Out OK -

Protective earth PE²

Inhibit control input³

i

Input voltage (positive)

Input voltage (negative)

Vi+

Vi-

Vi+

Vi-

1

2

3

Do not connect pin 16 for models with 3.3 V output or with opt. P !

Leading pin (pre-connecting).

If not actively used, connect with pin 32.

Installation Instructions

The Q Series converters are components, intended exclusively for inclusion within other equipment by an industrial assembly

operation or by professional installers. Installation must strictly follow the national safety regulations in compliance to enclosure,

mounting, creepage, clearance, casualty, markings and segregation requirements of the end-use application.

Connection to the system shall be made via the female connector H15 (see Accessories). Other installation methods may not

meet the safety requirements.

The Q Series converters are provided with pin 26 ( ), which is reliably connected to the case. For safety reasons it is essential

to connect this pin to protective earth; see Safety of Operator-Accessible Output Circuits.

The Vi– input (pin 32) is internally fused (except converters with option F). This fuse is designed to protect in case of overcurrent

and may not be able to satisfy all customer requirements. External fuses in the wiring to one or both input pins (no. 30 and/or no.

32) may be necessary to ensure compliance with local requirements.

Important:

• If the inhibit function is not used, pin 28 (i) must be connected with pin 32 (Vi–) to enable the output(s).

• Do not open the converters, or warranty will be invalidated.

• Long input, output and auxiliary lines, or lines with inductors, ﬁlters or coupling/decoupling networks may cause instabilities. See Input

Stability with Long Supply Lines.

Due to high output currents, the Q1001/1101 models oﬀer two internally parallel-connected contacts for both, the positive and the

negative output path (pins 4/6 and pins 8/10). It is recommended to connect the load to both female connector pins of each path

in order to keep the voltage drop to a minimum.

Make sure that there is suﬃcient air ﬂow available for convection cooling. This should be veriﬁed by measuring the case temperature

when the converter is installed and operated in the end-user application. The maximum speciﬁed case temperature T_{C max}shall not

be exceeded. See also Thermal Considerations.

Ensure that a converter failure (e.g. by an internal short-circuit) does not result in a hazardous condition. See also Safety of

Operator-Accessible Output Circuits.

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Q Series

66 - 132 W DC-DC Converters

Cleaning Liquids and Protection Degree

In order to avoid possible damage, any penetration of cleaning ﬂuids must be prevented, since the power supplies are not

hermetically sealed.

Protection degree (female connector ﬁtted to the converter):

• IP 30: All models, except those with option P (potentiometer)

• IP 20: All models with option P.

Standards and Approvals

The Q Series converters correspond to class I equipment. They are safety-approved to UL/CSA 60950-1 and IEC/EN 60950-1

2^ndEdition.

The converters have been evaluated for:

• Building in

• Basic insulation between input and case and double or reinforced insulation between input and output, based on their maximum

rated input voltage

• Basic insulation between Out-OK and case, and double or reinforced insulation between Out-OK and input and between Out-OK

and output, based on their maximum rated input voltage

• Functional insulation between outputs and output to case

• Use in a pollution degree 2 environment

• Connecting the input to a circuit, which is subject to a maximum transient rating of 1500 V.

CB Scheme is available.

The converters are subject to manufacturing surveillance in accordance with the above mentioned standards and with ISO 9001:2015.

Railway Applications

The converters have been designed observing the railway standards EN 50155:2017 and EN 50121-3-2:2016. All boards are

coated with a protective lacquer.

The Q Series converters have been certiﬁed to the ﬁre protection class HL1 to HL3 according to EN 45545.

Isolation

The electric strength test is performed in the factory as routine test according to EN 50514 and IEC/EN 60950. The company will

not honor warranty claims resulting from incorrectly executed electric strength ﬁeld tests. The resistance of the earth connection

to the case (<0.1 Ω) is tested as well.

Table 18: Isolation

Characteristics

Input to

Case + Output(s)

Output(s) to

Case

Output to

Output

Out-OK to

Case + Input

Out-OK to

Output(s)

Unit

Electric

strength test

Factory test 10 s

2.1¹

2.1

0.5 ^*

0.35 ^*

>100

2.1¹

kVDC

kVAC

AC test voltage equivalent

to factory test

1.5 ¹

1.5

1.5 ¹

Insulation resistance

>300²

1.4 ³

>300²

1.4

>300²

MΩ

Minimum creepage distances

mm

*

Models with version V104 or higher. Older converters have only been tested with 0.3 kVDC.

In accordance with EN 50116 and IEC/EN 60950, subassemblies connecting input to output are pre-tested with 3 kVAC or 4.2 kVDC.

Tested at 500 VDC.

2.8 mm between input and output.

1

2

3

Safety of Operator-Accessible Output Circuits

If the output circuit of a DC-DC converter is operator-accessible, it shall be an SELV circuit according to IEC 60950.

Table 20 shows some possible installation conﬁgurations, compliance with which causes the output circuit of the DC-DC converter

to be SELV up to a conﬁgured output voltage (sum of nominal voltages, if in series conﬁguration) of 35 V.

However, it is the sole responsibility of the installer to ensure the compliance with the relevant and applicable safety regulations.

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Q Series

66 - 132 W DC-DC Converters

Description of Options

Option P: Output Voltage Adjustment

Option P provides a built-in multi-turn potentiometer, which allows an output voltage adjustment of ±10% of V_{o nom}. The potentiometer

is accessible through a hole in the front cover.

With double-output models, both outputs are aﬀected by the potentiometer. If converters are parallel-connected, their individual

output voltage should be set within a tolerance of ±1%.

If V_ois set higher than V_{o nom}, the output currents should be reduced accordingly, so that the maximum speciﬁed output power is

not exceeded.

Option -7: Temperature Range

Option -7 designates converters with an operational ambient temperature range of –25 to 71 °C. Not for new designs.

Option B, B1: Additional Heat Sink

Thickness: 12.5 mm (opt. B) or 20 mm (opt. B1)

Table 19: Thermal resistance case to ambient (approx. values)

Case

Thermal resistance Thickness of case

Standard (160 mm long) 1.60 K/W

< 20 mm

< 33 mm

< 40 mm

Case 220 mm long^{1, 2}

Option B

1.40 K/W

1.45 K/W

1.40 K/W

Option B1

¹As well available with an additional heat sink

²Customer-speciﬁc models. Add 5000 to the part number!

Option F:

No internal fuse; the installer must use an appropriate external fuse or circuit breaker. CSA, NEMKO symbol on request.

Option non-G:

Leaded solder used (not RoHS-compliant).

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Q Series

66 - 132 W DC-DC Converters

Table 20: Safety concept leading to an SELV output circuit

Conditions

Front end

DC-DC converter

Result

Nominal supply

voltage

Minimum required grade of

insulation, to be provided by

the AC-DC front end, including

Maximum

DC output

voltage from

Minimum required safety Types

status of the front end

output circuit

Measures required to achieve

the speciﬁed safety status of the of the DC-DC

output circuit

Safety status

converter

output circuit

mains supplied battery charger the front end¹

Mains ≤150 VAC

Functional (i.e. there is no need

for electrical insulation between

the mains supply circuit and the

DC-DC converter input voltage)

≤ 150 V²

Primary circuit

DQ

EQ

Double or reinforced insulation,

based on 150 VAC and DC

(provided by the converter) and

earthed case³

SELV circuit

Basic

≤ 60 V

≤ 75V

ELV circuit

BQ, GQ

48Q, CQ

Supplementary insulation,

based on 150 VAC (provided by

the DC-DC converter) and earthed

case³

Hazardous voltage

secondary circuit

48Q

CQ

Supplementary insulation, based

on 150 VAC and double or

reinforced insulation⁴

(both provided by the DC-DC

converter) and earthed case³

Mains ≤ 250 VAC

≤ 60 V

Earthed SELV circuit³

ELV circuit

BQ

Functional insulation

(provided by the converter)

GQ

48Q

CQ

Input fuse⁵, output suppressor

Earthed SELV

diodes⁶, earthed output circuit³and circuit

earthed³or non-user-accessible

case

≤ 75V

Unearthed hazardous

voltage secondary circuit

48Q

CQ

≤ 150 V

Earthed hazardous

BQ, GQ

Double or reinforced insulation ⁴,

(provided by the converter) and

earthed case³

SELV circuit

voltage secondary circuit³48Q, CQ

or earthed ELV circuit

DQ, EQ

Unearthed hazardous

voltage secondary circuit

DQ

EQ

Supplementary insulation, based

on 250 VAC and double or

reinforced insulation⁴

(both provided by the converter)

and earthed case³

Double or reinforced

≤ 60 V

SELV circuit

TNV-3 circuit

BQ, GQ

48Q, CQ

Functional insulation

(provided by the converter)

≤ 120 V

≤ 150 V

48Q, CQ

DQ, EQ

Basic insulation⁴

(provided by the DC-DC converter)

Double or reinforced

insulated unearthed

hazardous voltage

secondary circuit²

1

The front end output voltage should match the speciﬁed input voltage range of the DC-DC converter.

Has to be insulated from earth according to IEC/EN 60950, by at least supplementary insulation, based on the maximum nominal output

voltage from the front end.

The earth connection has to be provided by the installer according to IEC/EN 60950.

Based on the maximum rated output voltage provided by the front end.

The installer shall provide an approved fuse with the lowest rating suitable for the application in a non-earthed input conductor directly at

the input of the DC-DC converter (see ﬁg. Schematic safety concept). For UL’s purposes, the fuse needs to be UL-listed.

Each suppressor diode should be dimensioned such that in the case of an insulation fault the diode is able to limit the output voltage to

SELV (<60 V), until the input fuse blows (see ﬁg. Schematic safety concept).

2

3

4

5

6

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Q Series

66 - 132 W DC-DC Converters

Accessories

A variety of electrical and mechanical accessories are available:

• Various mating connectors including fast-on, screw, solder, or press-ﬁt terminals, code key system; see Mating Connectors

data sheet BCD.20022.

• Connector retention brackets (HZZ01217-G) CRB-Q

• Cable connector housings (cable hoods) HZZ00141-G, also available with ﬁxation HZZ00142-G, and metallic cable hood HZZ00143-G.

• Front panels, system Schroﬀ, for 19" racks in 3 U conﬁguration 4 TE (G04-Q01), 5 TE (G05-Q01), or 6 TE (G06-Q01).

Similar panels system Intermas available.

• Front panels, system Schroﬀ, for 19" racks in 6 U conﬁguration 5 TE (G05-6HE-Q01)

• Mechanical mounting supports for chassis, DIN-rail, and PCB mounting plate Q (HZZ01215-G) with retention clips Q (HZZ01229-G)

• Brackets for DIN-rail mounting UMB-LHMQ (HZZ00610-G)

• Additional external input and output ﬁlters

• Battery sensor [S-KSMH...] for using the converter as battery charger. Diﬀerent cell characteristics can be selected.

For additional accessory product information, see the accessory data sheets listed with each product series or individual

model at our website.

H15 female connector, code key system, Connector

faston, screw or other terminals

retention bracket

(HZZ01217-G)

Mounting plate with ﬁtted metallic cable hood with fastening

screws (HZZ00143-G)

Mounting plate Q (HZZ01215-G) for wall mounting with ﬁtted

connector retention clips Q (HZZ01229-G)

Universal mounting bracket for DIN-rail and chassis mounting

(HZZ00610-G).

Front panel kit G05-6HE-Q01 (HZZ00838) accommodating

two units for a 19” DIN-rack with 6 U, 5 TE.

NUCLEAR AND MEDICAL APPLICATIONS - These products are not designed or intended for use as critical components in life support systems,

equipment used in hazardous environments, or nuclear control systems.

TECHNICAL REVISIONS - The appearance of products, including safety agency certiﬁcations pictured on labels, may change depending on the

date manufactured. Speciﬁcations are subject to change without notice.

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Page 31 of 31


型号：	BQ2660-7R
厂家：	BEL FUSE INC.
描述：	DC-DC Regulated Power Supply Module,
文件：	总31页 (文件大小：4185K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

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