DP3020-9RG [BEL]
DC-DC Regulated Power Supply Module, 3 Output, Hybrid, METAL, CASE P01, MODULE;
| 型号： | DP3020-9RG |
| 厂家： | 
BEL FUSE INC. |
| 描述： | DC-DC Regulated Power Supply Module, 3 Output, Hybrid, METAL, CASE P01, MODULE |
| 文件： | 总24页 (文件大小：867K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
P Series Data Sheet
90 – 192 Watt DC-DC Converters
Features
• RoHS lead-free-solder and lead-solder-exempted
products available
• Wide input voltage ranges up to 154 VDC
• 1, 2, 3 or 4 isolated outputs up to 96 V
• Class I equipment
• Compliant with EN 45545 and NF-F-16 (version V114
or later)
• Very high efficiency up to 90%
• Extremely low inrush current, hot-swappable
• Excellent surge and transient protection
• Many output configurations available with flexible load
distribution
• Externally adjustable output voltage
• Inhibit primary referenced
• Redundant operation (n+1), sense lines, current
sharing option
• Extremly slim case (4 TE, 20 mm), fully enclosed
• Hipot test voltage up to 2.8 kVDC (Version V114 or later)
• All PCBs coated with protective lacquer
111
4.4"
3 U
• Telecom-compatible input voltage range of DP models
according to ETS 300132-2
164
6.5"
20
0.8"
4 TE
• CompactPCI-compatible output voltage (xP4720)
Safety-approved to the latest edition of IEC/EN
60950-1 and UL/CSA 60950-1.
Description
The converters are particularly suitable for rugged environ-
ments, 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 converter inputs are protected against
surges and transients occurring on the source lines and cover
a total operating input voltage range from 16 to 150 VDC
with five different model types. The outputs are continuously
open- and short-circuit proof.
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-side current limitation,
extremely high efficiency, excellent reliability, very low ripple
and RFI noise levels, full input-to-output isolation, negligible
inrush current, soft start, overtemperature protection and
input over- and undervoltage lockout.
Table of Contents
Page
Page
Model Selection .................................................................... 2
Functional Description.......................................................... 6
Electrical Input Data ............................................................. 7
Electrical Output Data .......................................................... 9
Auxiliary Functions ............................................................. 14
Electromagnetic Compatibility (EMC) ................................ 16
Immunity to Environmental Conditions .............................. 18
Mechanical Data ................................................................. 19
Safety and Installation Instructions .................................... 20
Description of Options ........................................................ 23
Accessories ........................................................................ 24
Copyright © 2017, Bel Power Solutions Inc. All rights reserved.
MELCHER
The Power Partners.
BCD20010-G Rev AN1, 12-Nov-2018
Page 1 of 24
P Series Data Sheet
90 – 192 Watt DC-DC Converters
Full system flexibility and n+1 redundant operating mode are
possible due to series or parallel connection capabilities of the
outputs under the specified conditions. When several
converters (with 3.3 and 5.1 V outputs) are connected in
parallel, the T option allows for a single-wire connection
between the converters to ensure good current sharing. LEDs
at the front panel and an isolated Out-OK signal (option)
indicate the status of the converter. Voltage suppressor
diodes and an independent second control loop protect the
outputs against an internally generated overvoltage.
the main and the tracking output of each powertrain. Close
magnetic coupling in the transformers and output conductors
together with circuit symmetry ensure tight tracking of the
auxiliary output. The switching frequency is fixed.
As a modular power supply or as part of a distributed power
supply system, the low-profile design significantly reduces the
required volume without sacrificing high reliability. The
converters are particularly suitable for 19" rack systems
occupying 3U/4TE only, but they can also be chassis-
mounted by means of four screws. Connector type is H15 (or
H15S2 for some single-output models). The fully enclosed
black-coated aluminum case acts as heat sink and RFI shield
and protects the converter together with the coating of all
components against environmental impacts.
The converters are designed using planar magnetics
transformers and control circuits in hybrid technology. There
are always two powertrains fitted to a converter, each con-
sisting either of a regulated single output with synchronous
rectifier or of a regulated main output with a tracking second
output. The output power may be flexibly distributed among
Model Selection
Note: Only standard models are listed. Other voltage con-
figurations are possible as well; please contact the Company !
Table 1a: Model types BP, CP
Output 1, 4
Output 2, 3
Efficiency2, operating input voltage range
Options
4
4
Vo nom
Po nom
Po max
Vo nom
Po nom
Po max
η 2
Vi min – Vi max
η 2
Vi min – Vi max
[V]
[W]
[W]
[V]
[W]
[W]
[%]
16–36 V
[%]
33.6–75 V
3.3
5.1
12
15
24
92
132
183
192
192
192
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
848
878
87.5
87.5
88
BP1101-9RG
BP1001-9RG
BP1301-9RG
BP1501-9RG
BP1601-9RG
848
888
88.5
88.5
89
CP1101-9RG
CP1001-9RG
CP1301-9RG
CP1501-9RG
CP1601-9RG
-7
122
120
120
120
D, T5, K8
B0, B1, B3
non-G
3.3
5.1
5.1
12
15
24
46
61
61
60
60
60
66
91
91
96
96
96
5.1
5.1
12
12
15
24
61
61
60
60
60
60
91
91
96
96
96
96
86
87
87
87.5
87.5
88
BP2101-9RG
BP2001-9RG
BP2020-9RG
BP2320-9RG
BP2540-9RG
BP2660-9RG
86
88
88
88.5
88.5
89
CP2101-9RG
CP2001-9RG
CP2020-9RG
CP2320-9RG
CP2540-9RG
CP2660-9RG
-7
D, T6
B0, B1, B3
non-G
5.1
5.1
5.1
12
61
61
61
60
60
91
91
91
96
96
12, 123
15, 153
24, 243
15, 153
5.1, 5.13
601
601
601
601
511
961
961
961
961
821
87
87.5
87.5
87
BP3020-9RG
BP3040-9RG
BP3060-9RG
BP3340-9RG
-
89
88.5
88.5
-
CP3020-9RG
CP3040-9RG
CP3060-9RG
-
24
-
87
CP3601-9RG
5.1, 3.37
5.1, 5.13
12, 123
15, 153
24, 243
30
50
12, 123
15, 153
12, 123
15, 153
24, 243
601
601
601
601
601
961
961
961
961
961
85
86
87.5
87.5
88
BP4720-9RG9
BP4040-9RG
BP4320-9RG
BP4540-9RG
BP4660-9RG
-
-
CP4720-9RG9
-
CP4320-9RG
CP4540-9RG
CP4660-9RG
-7
D
511
601
601
601
821
961
961
961
88.5
88.5
89
B0, B1, B3
non-G
1
The power of both outputs shall in sum not exceed the total power for the specified ambient temperature.
2
3
4
5
6
7
8
Min efficiency at Vi nom, Po nom, TA = 25 °C. Typical values are approx. 2% better.
Isolated tracking output (±5% Vo nom, if each output is loaded with ≥ 5% of Po nom). Parallel or series configuration is possible.
Short deviations below Vi min and beyond Vi max according to EN 50155 possible; see table 2a.
Only available for models with 5.1 or 3.3 V output.
Option T is only available for outputs with 5.1 or 3.3 V. Opt. T excludes opt. R; refer to table 13, pin allocations
Outputs 5.1 and 3.3 V have a common return. Nominal values: 5.1 V / 4 A, 3.3 V / 3 A. Max. values: 5.1 V / 6.5 A, 3.3 V / 5 A.
Option K only for xP1101 and xP1001: H15 standard connector. Models without option K exhibit a better efficiency: xP1101 is approx
2% better, xP1001 approx 1% better than the models with option K.
9
Compatible with CompactPCI® specification
NFND: Not for new designs
Preferred for new designs
MELCHER
The Power Partners.
BCD20010-G Rev AN1, 12-Nov-2018
Page 2 of 24
P Series Data Sheet
90 – 192 Watt DC-DC Converters
Table 1b: Model types DP, EP
Output 1, 4
Output 2, 3
Efficiency2, operating input voltage range
Options
4
4
Vo nom
[V]
Po nom
[W]
Po max
[W]
Vo nom
[V]
Po nom
[W]
Po max
[W]
η 2
[%]
Vi min – Vi max
η 2
Vi min – Vi max
67.2 – 150 V
40 – 100.8 V9 [%]
3.3
5.1
12
15
24
92
132
183
192
192
192
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
848
888
88
88
88
DP1101-9RG 83.5 8
DP1001-9RG 87.58
EP1101-9RG
EP1001-9RG
EP1301-9RG B0, B1, B3
EP1501-9RG
EP1601-9RG
-7
122
120
120
120
D, T5, K 8
DP1301-9RG
DP1501-9RG
DP1601-9RG
87.5
87
87.5
non-G
3.3
5.1
5.1
12
15
24
46
61
61
60
60
60
66
91
91
96
96
96
5.1
5.1
12
12
15
24
61
61
60
60
60
60
91
91
96
96
96
96
86
88
88
88
88
88
DP2101-9RG
DP2001-9RG
DP2020-9RG
DP2320-9RG
DP2540-9RG
DP2660-9RG
86
EP2101-9RG
EP2001-9RG
EP2020-9RG B0, B1, B3
EP2320-9RG
EP2540-9RG
EP2660-9RG
-7
87.5
87.5
87.5
87
D, T6
non-G
87.5
5.1
5.1
5.1
61
61
61
91
91
91
12, 123
15, 153
24, 243
601
601
601
961
961
961
87.5
88
88
DP3020-9GR
DP3040-9GR
DP3060-9GR
87.5
88
88
EP3020-9RG
EP3040-9RG
EP3060-9RG
5.1, 3.37
12, 123
15, 153
24, 243
30
50
12, 123
12, 123
15, 153
24, 243
601
601
601
601
961
961
961
961
85
88
88
88
DP4720-9RG9
DP4320-9RG
DP4540-9RG
DP4660-9RG
-
EP4720-9RG9
EP4320-9RG
EP4540-9RG B0, B1, B3
EP4660-9RG non-G
-7
D
601
601
601
961
961
961
87.5
87
87.5
Table 1c: Model types GP
Output 1, 4
Output 2, 3
Efficiency2, oper. input voltage range
Options
4
Vo nom
Po nom
Po max
Vo nom
Po nom
Po max
η 2
Vi min – Vi max
[V]
[W]
[W]
[V]
[W]
[W]
[%]
21.6 – 50.4 V
3.3
5.1
12
15
24
92
132
183
192
192
192
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
848
888
88
88.5
88
GP1101-9RG
GP1001-9RG
GP1301-9RG
GP1501-9RG
GP1601-9RG
-7
122
120
120
120
D, T5, K8
B0, B1, B3
non-G
3.3
5.1
5.1
12
15
24
46
61
61
60
60
60
66
91
91
96
96
96
5.1
5.1
12
12
15
24
61
61
60
60
60
60
91
91
96
96
96
96
86
88
87.5
88
88.5
88
GP2101-9RG
GP2001-9RG
GP2020-9RG
GP2320-9RG
GP2540-9RG
GP2660-9RG
-7
D, T6
B0, B1, B3
non-G
5.1
5.1
5.1
61
61
61
91
91
91
12, 123
15, 153
24, 243
601
601
601
961
961
961
87.5
88.5
88.5
GP3020-9RG
GP3040-9RG
GP3060-9RG
5.1, 3.37
12, 123
15, 153
24, 243
30
50
12, 123
12, 123
15, 153
24, 243
601
601
601
601
961
961
961
961
-
88
88.5
88
GP4720-9RG 9
GP4320-9RG
GP4540-9RG
GP4660-9RG
-7
D
601
601
601
961
961
961
B0, B1, B3
non-G
1
The power of both outputs may in sum not exceed the total power for the specified ambient temperature.
2
3
4
5
6
7
8
Min efficiency at Vi nom, Po nom, TA = 25 °C. Typical values are approx. 2% better.
Isolated tracking output (±5% Vo nom, if each output is loaded with ≥ 5% of Po nom). Parallel or series configuration possible
Short deviations below Vi min and beyond Vi max according to EN 50155 possible; see table 2.
Only available for models with 5.1 or 3.3 V output
Option T is only available for outputs with 5.1 or 3.3 V. Opt. T excludes opt. R; refer to table 13, pin allocations
Outputs 5.1 and 3.3 V have a common return. Nominal values: 5.1 V / 4 A, 3.3 V / 3 A. Max. values: 5.1 V / 6.5 A, 3.3 V / 5 A.
H15 standard connector for xP1101 and xP1001 models; without option K, the η value for xP1101 is approx 2% better and for xP1001
approx 1% better than for models with option K.
9
Compatible with CompactPCI® specification; for detailed specification
NFND: Not for new designs
Preferred for new designs
MELCHER
The Power Partners.
BCD20010-G Rev AN1, 12-Nov-2018
Page 3 of 24
P Series Data Sheet
90 – 192 Watt DC-DC Converters
Part Number Description
C P 3 0 20 -9 D T B1 G
Input voltage Vi nom
:
24 VDC ............................................................... B
48 VDC ................................................................ C
72 VDC ................................................................ D
110 VDC .............................................................. E
36 VDC ............................................................... G
Series ..................................................................................... P
Number of outputs:
Single output (160 mm case) 4 .......................................... 1
Double output (160 mm case) 4 ........................................ 2
Triple output (160 mm case) 4 ........................................... 3
Quadruple output (160 mm case) 4 ................................ 4
Nominal voltage output 1/output 4, Vo1/4 nom
:
3.3 V ..................................................................... 1
5.1 V ..................................................................... 0
12 V ...................................................................... 3
15 V ...................................................................... 5
24 V ...................................................................... 6
other voltages1 ....................................................................... 7, 8
Other specifications and additional features1 .............. 01, ...99
Nominal voltage output 2/output 3, Vo2/3 nom
:
5.1 V ................................................................... 01
3.3 V ................................................................... 10
12 V .................................................................... 20
15 V .................................................................... 40
24 V .................................................................... 60
other voltages and features1 ............................ 80, ... 99
Operational ambient temperature range TA:
–40 to 71 °C ........................................................-9
–25 to 71 °C (option) ...........................................-7
others1 ........................................................... 0, -6
Output voltage adjust (auxiliary function)............................... R
Options: Out OK output ..................................................... D
Current sharing ................................................. T 2
H15 standard connector .....................................K3
Heatsink ............................................... B0, B1, B3
RoHS compliant for all 6 substances..................................... G
1
Customer-specific models.
2
Only available for 3.3 V and 5 V outputs. Option T excludes option R, except for single-output models; refer to table 1.
For single-output models with 3.3 V or 5 V output
Models with 220 mm case length. Just add 5000 to the standard model number, e.g. EP8060-9RG.
3
4
Note: The sequence of options must follow the order above. This
description is not intended for creating new part numbers.
Example: CP3020-9DTB1G: DC-DC converter, input voltage
33.6 to 75 V, 1 regulated output providing 5.1 V, 2nd powertrain
with 2× 12 V, equipped with option D, option T for output 1,
heatsink, ambient temperature –40 to 71°C, RoHS.
Product Marking
Basic type designation, safety approval and recognition
marks, CE mark, warnings, pin allocation, patents, company
logo, specific type designation, input voltage range, nominal
output voltages and output currents, degree of protection,
batch no., serial no. and data code including production site,
modification status and date of production. Identification of
LEDs.
Note: All models exhibit the following auxiliary functions, which
are not shown in the type designation: input and output filters,
primary referenced inhibit, sense lines (single-, double- and triple-
output models only) and LED indicators.
MELCHER
The Power Partners.
BCD20010-G Rev AN1, 12-Nov-2018
Page 4 of 24
P Series Data Sheet
90 – 192 Watt DC-DC Converters
connect converters in parallel without measures to provide
reasonable current sharing. Choose suitable single-output
models, if available.
Output Configuration
The P Series allows high flexibility in output configuration to
cover almost every individual requirement, by simply wiring
outputs in parallel, in series, or in independent configuration,
as shown in the following diagrams.
Note: Unused tracking outputs should be connected parallel to the
respective regulated output.
Parallel or serial operation of several converters with equal
output voltage is possible, however it is not advantageous to
01010-P
Triple-output
model
Vo1+
4
12
14
8
01006-P
16
S1+
S1–
Single-output
model
R
Load 1
28
30
i
4
6
Vo+
Vo1–
Vo2+
Vo2–
Vo3+
Vo3–
Vi+
Vo+
32 Vi–
6
S+ 12
Load 2
Load 3
10
18
20
28
22
i
OK+
Load
30
OK– 24
S– 14
Vi+
32 Vi–
8
Vo–
Fig. 4
Independent triple-output configuration. Output 3 is
tracking
10
Vo–
Fig. 1
JM200
Standard configuration (single-output model)
Quadruple-
output
model
Vo1+
Vo1–
4
8
01007-P
Load 1
Load 4
Double-output
model
Vo2+
6
28
30
12
14
6
i
Vo4+
Vo4–
S2+ 18
S2– 20
Vi+
32 Vi–
Vo2+
Vo2–
Vo3+
Vo3–
Load 2
Load 3
Vo2–
Vo1+
S1+
10
4
10
18
20
Load
28
30
i
Vi+
12
32 Vi–
S1– 14
Vo1–
Fig. 5
8
Common ground configuration of output 1 with 4 and
independent configuration of output 2 and 3
Fig. 2
Series output configuration of a double-output model.
The second output is fully regulated.
01012Pa
Quadruple-
output
model
18
20
6
Vo3+
Vo3–
Vo2+
01013b-P
Double-output
model
Vo1+
4
12
14
8
S1+
S1–
28
Vo2– 10
Vo4+ 12
i
Load
Load 1
Load 2
28
30
i
30
Vi+
Vo1–
Vo2+
S2+
Vi+
32 Vi–
Vo4–
14
32 Vi–
6
Vo1+
R
4
16
8
R2
R1
18
20
S2–
Vo1–
Vo2– 10
Fig. 6
Series configuration of all outputs (Vo = 96 V for xP4660).
The R-input influences only outputs 1 and 4. For the
values of R1 and R2, see Output Voltage Adjust.
Fig. 3
Independent double-output configuration. Both outputs
are fully regulated
MELCHER
The Power Partners.
BCD20010-G Rev AN1, 12-Nov-2018
Page 5 of 24
P Series Data Sheet
90 – 192 Watt DC-DC Converters
powertrain in overload conditions. This allows for flexible
power operation of the outputs from each powertrain. All
outputs can either be connected in series or in parallel; see
Electrical Output Data.
Functional Description
The power supplies are equipped with two independent flight-
forward converters, switching 180° phase-shifted to minimize
the ripple current at the input. They use primary and se-
condary control circuits in hybrid technology. The two con-
verters, called "powertrains" (PT). Each powertrain generates
either a single output with synchronous rectifier or two
isolated outputs, one fully regulated and the other one
tracking (semi-regulated), thus providing up to four output
voltages. In some models, both outputs of a powertrain are
internally connected in parallel .
An auxiliary converter provides the bias voltages for the
primary and secondary referenced control logic and the option
circuits. An oscillator generates a clock pulse of 307 ±1% kHz,
which is fed to the control logic of each powertrain. The pulse
width modulation and the magnetic feedback are provided by
special ASICs. The converter is only enabled, if the input
voltage is within the operating voltage range.
Double-output powertrains are equipped with an independent
monitor sensing the output voltage of the tracking output. It
influences the control logic in order to reduce via the pulse
width the voltages of both outputs. In addition, the tracking
outputs are protected by a suppressor diode.
The highly efficient input filter together with very low input
capacitance results in a very low and short inrush current.
After the isolating transformer and rectification, the output
filter reduces ripple and noise to a minimum without affecting
the dynamic response. Outputs 3 and 4, if available, are
tracking (semi-regulated) and exhibit due to the close
magnetic coupling of the common transformer and output
inductor together with the circuit symmetry a close voltage
regulation. A current limitation circuit is located on the primary
side of each powertrain, limiting the total output current of that
Outputs of single-output powertrains are also protected by a
suppressor diode.
The temperature of the heat sink is monitored and causes the
converter to disable the outputs. After the temperature
dropped, the converter automatically resumes.
03107d
Vo1
Vo4
Output
filter PT1
CY
Input filter
(with varistor)
Vi
Vo2
Vo3
Output
filter PT2
CY
2 x in
double-output
power trains
CY
PT1
PT2
Auxiliary
converter
PT2
PT1
PWM controller,
duty cycle limiter,
non linear FF,
ON/OFF control of
sync. rectifier
Clock
generator
Error amplifier,
Vo monitor
R
D, i, T
Primary options
Secondary options
Fig. 7
Block diagram. Powertrains PT1 and PT2 have isolated outputs.
Pin allocation see table 13
MELCHER
The Power Partners.
BCD20010-G Rev AN1, 12-Nov-2018
Page 6 of 24
P Series Data Sheet
90 – 192 Watt DC-DC Converters
Electrical Input Data
General Conditions:
– TA = 25°C, unless TC is specified
– Sense lines connected directly at the connector, inhibit (pin 28) connected to Vi– (pin 32)
– R input open
Table 2a: Input data
Input
BP
typ
GP
typ
CP
typ
Unit
Characteristics
Conditions
min
max
min
max
min
max
Vi
Operating input voltage Io = 0 – Io max
16
36
21.6
50.4
33.6
75
V
continuously
TC min – TC max
Vi nom
Vi 2s
Vi abs
Ii
Nominal input voltage
for ≤ 2 s
24
36
48
without lockout
without damage
Vi nom, Io nom
14.4
0
40
50
20
0
52
63
28.8
0
81
for ≤ 3 s
100
Typical input current 1
No-load input power 1
Idle input power 1 4
Input capacitance
Peak inrush current 2
Rise time inrush
Rise time inhibit 3
Fall time inhibit 3
5.6
3.7
2.8
A
Pi 0
Pi inh
Ci
Vi min – Vi max
Io = 0
4
1
6.5
1.5
4
1
6.5
1.5
5
1
10
W
1.5
220
61
50
5
220
64
32
5
107
66
30
5
µF
A
Iinr p
tinr rise
t r
Vi max, Io max
µs
ms
Io max – Vi nom
tf
5
5
5
3
ton
Start-up time
0 → Vi min, Io max
110
150
300
Table 2b: Input data
Input
DP2
typ max
100.8 67.2
EP
Unit
Characteristics
Conditions
min
min
typ max
Vi
Operating input voltage Io = 0 – Io max
402
150
V
continuously
TC min – TC max
Vi nom
Vi 2s
Vi abs
Ii
Nominal input voltage
for ≤ 2 s
72
110
154
200
1.2
12
without lockout
without damage
Vi nom, Io nom
38
0
100.8
125
66 5
0
for ≤ 3 s
Typical input current 1
No-load input power 1
Idle input power 1 4
Input Capacitance
Peak inrush current 2
Rise time inrush current
Rise time inhibit 3
Fall time inhibit 3
1.9
A
Pi 0
Pi inh
Ci
Vi min – Vi max
Io = 0
5
1
11
5
W
1.7
1.1
1.7
15
15
57
20
5
µF
A
Iinr p
tinr rise
tr
Vi max, Io max
65
20
µs
ms
Io max, Vi nom
5
tf
5
6
3
ton
Start-up time
0 → Vi min, Io max
200
200
1
Typical values depending on model
According to ETS 300132-2
See fig.18
Converter inhibited
Vi min = 57.6 V for 0.1 s without lockout (operation with 96 V battery)
2
3
4
5
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Page 7 of 24
P Series Data Sheet
90 – 192 Watt DC-DC Converters
system is not linear at all and eludes a simple calculation. One
basic condition is given by the formula:
Input Fuse and Reverse Polarity
A fuse mounted inside the converter protects against further
damage in case of a failure. The fuse is not user-accessible.
Reverse polarity at the input will cause the fuse to blow.
Lext • Po max
Ci + Cext > ——————————
Rext • Vi min
dVi
( ri = ——— )
dIi
²
Table 3: Fuse specification
Rext is 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 a lowest Vi and at highest output power Po.
Low inductance Lext of the supply lines and an additional
capacitor Cext are helpful. Recommended values for Cext are
given in table 4, which should allow for stable operation up to
an input inductance of 2 mH. Ci is specified in table 2.
Model
BP
Fuse type
Rating
Reference
very fast blow 2× 10 A, 125 V Littelfuse Pico 251
very fast blow 2× 10 A, 125 V Littelfuse Pico 251
GP
CP
very fast blow 10 A, 125 V
very fast blow 7 A, 125 V
very fast blow 5 A, 250 V
Littelfuse Pico 251
Littelfuse Pico 251
Littelfuse Pico 263
DP
EP
Input Transient Protection
JM085d
A VDR (Voltage Dependent Resistor), the input fuse, and a
symmetrical input filter form an effective protection against
input transients, which typically occur in most installations, but
especially in battery-driven mobile applications.
Converter
Lext
Rext
Ri
Vi+
Vi–
Vo+
Vo–
+
ri
Cext
Ci
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 of –30% to +25%, with short excursions to ±40% or
even more.
Fig. 8
In some applications, surges according to RIA 12 are
specified in addition to those defined in IEC 60571-1 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 range is required. The P
Series input ranges have been designed and tested to meet
these requirements; see Electromagnetic Immunity.
Input configuration
Table 4: Recommended values for Cext
Model
BP
Capacitance
1500 µF
1000 µF
470 µF
Voltage
40 V
GP
63 V
Input Under-/Overvoltage Lockout
CP
100 V
125 V
200 V
When the input voltage is below Vi 2s min or exceeds Vi 2s max
,
DP
220 µF
an internally generated inhibit signal disables the converter. It
automatically recovers, when Vi is back in range.
EP
100 µF
Inrush Current
The inherent inrush current value is lower than specified in the
standard ETS 300132-2. The converters operate with rela-
tively small input capacitance Ci resulting in low inrush current
of short duration. As a result, in a power-bus system the units
can be hot plugged-in or disconnected causing negligible
disturbances at the input side.
Input Stability with Long Supply Lines
If a converter is connected to the power source by long supply
lines exhibiting a considerable inductance Lext, an additional
external capacitor Cext connected across the input pins im-
proves the stability and prevents oscillations.
Actually, a P Series converter with its load acts as negative
resistor ri, because the input current Ii rises, when the input
voltage Vi decreases. It tends to oscillate with a resonant fre-
quency determined by the line inductance Lext and the input
capacitance Ci + Cext, damped by the resistor Rext. The whole
MELCHER
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P Series Data Sheet
90 – 192 Watt DC-DC Converters
Electrical Output Data
General Conditions:
– TA = 25°C, unless TC is specified.
– Sense lines connected directly at the connector, inhibit (28) connected to Vi– (32).
– R input not connected
Table 5a: Output data for single-output powertrains
Output
Single-output powertrain
Conditions
3.3 V
typ
5.1 V
typ
12 V
typ
12
Unit
Characteristics
min
3.28
3.24
max min
3.32 5.07
3.35 5.02
max
min
max
12.06
12.18
Vo
Output voltage 1
Vi nom, Io nom
3.3
5.1
5.13 11.94
5.18 11.82
V
Vow
Worst case output
Vi min – Vi max
voltage
TC min – TC max
(0.02 – 1) Io max
Vo P
Overvoltage protection 2
4.1
4.8
14
20
22
5
6.45
6.8
12
7.14
22.5
14.3
8.4
15
5
15.8
10.0
Io nom Nominal output current
Io max Max. output current
A
Vi min – Vi max
TC min – TC max
18
8
IoL
vo
Output current limit 3
20.5
25
18.9
19.8
5
8.8
15
30
1.2
Output Switch. frequ.
Vi nom, Io max
mVpp
V
noise 4
BW = 20 MHz
Total incl.spikes
20
0.7
20
vo d
Dynamic Voltage
Vi nom
0.8
load
deviation
I
o max ↔ 1/
Io max
2
regulation
5
td
Recovery time
0.4
0.3
0.15
ms
V
Vo tr
Output voltage trim
range (via R input)
1.1 Vi min – Vi max
(0.1 – 1) Io max
1.79
3.63 2.75
5.61
6.5
13.2
αVo
Temp. coefficient of Vo
Io nom,TC min – TC max
±0.02
±0.02
±0.02
%/K
Table 5b: Output data for single-output powertrains. General conditions as in table 5a
Output
Single-output powertrain
Conditions
15 V
typ
15
24 V
typ
24
Unit
Characteristics
min
max min
15.08 23.88
15.23 23.64
max
24.12
24.36
Vo
Output voltage 1
Vi nom, Io nom
14.93
14.78
V
Vow
Worst case output
Vi min – Vi max
TC min – TC max
voltage
(0.02 – 1) Io max
Vo P
Overvoltage protection2
17.1
6.8
18
4
18.9 28.5
30
2.5
4
31.5
5.0
Io nom Nominal output current
Io max Max. output current
A
Vi min – Vi max
TC min – TC max
6.4
7.2
15
40
1.2
IoL
vo
Output current limit 3
8.2
4.2
4.4
15
50
1.5
Output Switch. frequ.
Vi nom, Io max
mVpp
V
noise 4
BW = 20 MHz
Total incl.spikes
vo d
Dynamic Voltage
Vi nom
load
deviation
I
o max ↔ 1/
Io max
2
regulation
5
td
Recovery time
0.2
0.15
ms
V
Vo tr
Output voltage trim
range (via R input)
1.1 Vi min – Vi max
(0.1 – 1) Io max
8.1
16.5
13
26.4
αVo
Temp. coefficient of Vo
Io nom,TC min – TC max
±0.02
±0.02
%/K
1
If the output voltages are increased above Vo nom through R-input control or remote sensing, the output power should be reduced
accordingly, so that Po max and TC max are not exceeded.
Breakdown voltage of the incorporated suppressor diode at 10 mA (3.3 V, 5.1 V) or 1 mA (≥12 V). Value for 3.3 V for version
≥112. Exceeding this value might damage the suppressor diode.
See Output Power at Reduced Temperature
Measured according to IEC/EN 61204 with a probe described in annex A
2
3
4
5
Recovery time until Vo returns to ±1% of Vo; see Dynamic Load Regulation
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P Series Data Sheet
90 – 192 Watt DC-DC Converters
Table 5c: Output data for double-output powertrains. General conditions as in table 5a
Output
Double-output powertrain
5.1 V
Tracking output
12 V
Tracking output
Unit
Main output
Main output
Characteristics
Conditions
min
5.05
4.95
typ max min typ max min typ max min
5.1 5.2 11.88 12 12.12 11.76 12 12.24
See Output
typ max
Vo
Output voltage 1
Worst case output
voltage
Vi nom, Io nom
5.1
5.15 5.0
5.25
V
Vow
Vi min – Vi max
TC min – TC max
(0.02 – 1) Io max
11.82
12.18
See Output
Voltage Regulation
Voltage Regulation
Vo P Overvoltage protection2
Vo L Overvoltage limitation6
Io nom Nominal output current
Io max Max. output current 3
none
none
5.0
6.45
6.8
6.5
5.0
8.0
none
none
2.5
14.3
15 15.8
14.4
2.5
4
A
Vi min – Vi max
TC min – TC max
8.0
4
IoL
vo
Output current limit
17
20
8.4
6.5
10.0
15
Output Switch. frequ.
Vi nom, Io max
5
5
15
30
mV
pp
noise 4
BW = 20 MHz
Total incl.spikes
20
0.8
20
0.8
30
vo d
Dynamic Voltage
Vi nom
1.2
1.2
V
load
deviation
I
o max ↔ 1/
Io max
2
regulation
5
td
Recovery time
0.3
0.3
0.15
0.15
ms
V
Vo tr Output voltage trim
1.1 Vi min – Vi max 2.75
(0.1 – 1) Io max
5.61
See Output
Voltage Regulation
13.2
See Output
Voltage Regulation
range (via R input)
αVo
Temp. coefficient of Vo
Ionom
±0.02
±0.02
%/K
TC min – TC max
Table 5d: Output data for double-output powertrains. General conditions as in table 5a
Output
Double-output powertrain
15 V
Tracking output
24 V
Tracking output
Unit
Main output
min
Main output
Characteristics
Conditions
typ max min typ max min typ max min
14.85 15 15.15 14.7 15 15.3 23.88 24 24.12 23.76 24 24.24
typ max
Vo
Output voltage 1
Worst case output
voltage
Vi nom, Io nom
V
Vow
Vi min – Vi max
TC min – TC max
(0.02 – 1) Io max
14.78
15.23
See Output
23.64
24.36
See Output
Voltage Regulation
Voltage Regulation
Vo P Overvoltage protection2
Vo L Overvoltage limitation6
Io nom Nominal output current
Io max Max. output current 3
none
none
2
17.1
18 18.9
none
none
1.25
2
28.5
30 31.5
17.6
2
28.8
1.25
2
A
Vi min – Vi max
TC min – TC max
3.2
3.2
8.2
15
IoL
vo
Output current limit
6.8
4.2
5.0
15
Output Switch. frequ.
noise 4
Vi nom, Io max
15
40
15
50
mV
pp
BW = 20 MHz
Total incl.spikes
40
50
vo d
Dynamic Voltage
Vi nom
I
1.2
1.2
1.5
1.5
V
load
deviation
o max ↔ 1/
Io max
2
regulation
5
td
Recovery time
0.2
0.2
0.15
0.15
ms
V
Vo tr Output voltage trim
1.1 Vi min – Vi max 8.1
(0.1 – 1) Io max
16.5
See Output
Voltage Regulation
13
26.4
See Output
Voltage Regulation
range (via R input)
αVo
Temp. coefficient of Vo
Ionom
±0.02
±0.02
%/K
TC min – TC max
1
If the output voltages are increased above Vo nom through R-input control or remote sensing, the output power should be reduced
accordingly, so that Po max and TC max are not exceeded.
2
3
4
5
6
Breakdown voltage of the incorporated suppressor diode at 1 mA. Exceeding this voltage might damage the suppressor diode.
See Output Power at Reduced Temperature
Measured according to IEC/EN 61204 with a probe described in annex A
Recovery time until Vo returns to ±1% of Vo; see Dynamic Load Regulation
Output voltage limitation by an additional control loop
MELCHER
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P Series Data Sheet
90 – 192 Watt DC-DC Converters
• Rated output voltages above 48 V (SELV = Safety Extra Low
Voltage) require additional safety measures in order to comply
with international safety standards.
Parallel and Series Connection
The first outputs of power trains with equal nominal output
voltage can be connected in parallel. Where available, we
recommend ordering option T.
Parallel operation of two double-output converters with series-
connected outputs is shown in fig. 10. The link between the T
pins ensures proper current sharing, even though only the first
outputs are influenced by T. Sense lines are connected
directly at the connector, and load lines have equal length and
section.
Any output can be connected in series with any other output. If
the main and the tracking output of the same power train are
connected in series, consider that the effect of the R-input is
doubled.
Notes:
• If a tracking output is not used, connect it in parallel to the
respective regulated main output.
06158c
Double-output
model
16
T
+
• Connection of several outputs in parallel should include
measures to approximate all output currents. 3.3 and 5 V
outputs with option T have current-share pins (T), which must
be interconnected. For other outputs, the load lines should
exhibit similar resistance. Parallel connection of regulated
outputs without such precautions is not recommended.
6
Vo2+
26
Rp
S2+ 18
S2–
22
24
28
30
32
20
Out OK+
Vo2– 10
Out OK –
• The maximum output current of series-connected outputs is
limited by the output with the lowest current limit.
Vo1+
4
i
S1+ 12
S1– 14
Vi+
Vi–
JM033a
Vo1–
Double-output
model
8
6
Vo2+
+
26
18
20
10
4
S2+
S2–
Double-output
model
Rp
16
6
T
22
24
28
30
Out OK+
Vo2+
26
Vo2–
Vo1+
Out OK –
18
20
10
4
S2+
S2–
i
22 Out OK+
12
14
8
Vi+
S1+
S1–
Vo2–
Vo1+
24
Out OK –
32 Vi–
28
i
R
16
Vo1–
S1+ 12
S1– 14
30
Vi+
32 Vi–
Double-output
model
6
18
20
10
4
Vo2+
i
–
+
Vo1–
8
26
S2+
22
24
28
30
Out OK+
S2–
Vo2–
Vo1+
Fig. 10
Parallel operation of 2 double-output converters with series-
connected outputs.
Out OK –
i
12
14
8
S1+
S1–
Vi+
Redundant Systems
32 Vi–
An example of a redundant system using converters with 2
regulated ouputs (xP2020) is shown in fig. 11. Load 1 is
powered with 5.1 V and load 2 with 12 V.
R
16
Vo1–
i
–
+
The converters are separated with ORing diodes. If one
converter fails, the remaining one still delivers the power to
the loads. If more power is needed, the system may be
extended to more parallel converters (n+1 redundancy).
Fig. 9
Series connection of double-output models. Sense lines
connected at the connector.
Current sharing of the 5.1 V outputs is ensured by the
interconnected T pins, whereas the sense lines are connected
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P Series Data Sheet
90 – 192 Watt DC-DC Converters
06157c
Vo
Double-output
Vod
T
Vo2+
S2+
Vo 1%
Vo 1%
+
model
26
Rp
DS
Vod
td
td
RS
S2–
Out OK+
t
Vo2–
Vo1+
S1+
Io/Io nom
Out OK–
1
i
0.5
Vi+
Vi–
≥ 10 µs
≥ 10 µs
S1–
0
t
05102c
Vo1–
Fig. 12
Typical dynamic load regulation of
output voltage
Double-output
model
T
Vo2+
26
DS
C
i ext [mF]
= external input capacitance
= output power
= efficiency
S2+
S2–
Po [W]
η [%]
RS
Out OK+
t h [ms]
Vi min [V]
Vti [V]
= hold-up time [ms]
= minimum input voltage
= threshold level
Vo2–
Vo1+
S1+
Out OK–
i
Vi+
Vi–
Output Voltage Regulation
S1–
Line and load regulation of the regulated
outputs is so good that input voltage and
output current have virtually no influence
to the output voltage.
i
–
+
Vo1–
Wires of equal length and sectinon
However, if the tracking output is not
loaded, the second control loop may
slightly reduce the voltage of the main output. Thus, unused
tracking outputs should be connected in parallel to the
respective main output.
Fig. 11
Redundant configuration
after the ORing diodes to maintain the correct output voltage.
The dynamic load regulation is shown in fig. 12.
For the 12 V outputs, no current-share feature (option T) is
available. As a result, 2 little diodes Ds (loaded by little
resistors Rs) simulate the voltage drop of the ORing diodes.
Reasonable current sharing is provided by load lines of equal
length and section.
Tracking Outputs
The main outputs 1 and 2 are regulated to Vo nom independent
of the output current. If the loads on outputs 3 and 4 are too
low (<10% of Io nom), their output voltage tends to rise. Vo3 and
Vo4 depend upon the load distribution: If all outputs are loaded
with at least 10% of Io nom, Vo3 and Vo4 remain within ±5% of
Vo nom. The diagrams fig. 13 to 16 show the regulation of the
tracking output under different load conditions up to the
current limit. If Io1 = Io4 and Io2 = Io3 or if the tracking outputs
are connected in series with their respective regulated
outputs, then Vo3 and Vo4 remain within ±1% of Vo nom
provided that the load is at least Io min. A 2nd control loop
protects the tracking outputs against overvoltage by reducing
the voltage of the respective regulated main output.
Hot Swap
Important: For applications using the hot swap capabilities,
dynamic output voltage changes during plug-in and plug-out
operations may occur.
Hold-up time
The converters provide virtually no interruption time. If an
interruption time is required, use external output capacitors or
input capacitors of adequate size and decoupling diodes.
Because the P Series converters exhibit main transformers
and main chokes in planar technology, the tracking outputs
follow the main outputs very closely.
Formula for additional external input capacitor:
2 • Po • th • 100
Ci ext = ––––––––––––––––––
(Vti2 – Vi min2) • η
Note: If the tracking output (Vo3 or Vo4 is not loaded, it should be
connected in parallel to the respective main output (Vo3 parallel to
Vo2, Vo4 parallel to Vo1).
whereas:
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P Series Data Sheet
90 – 192 Watt DC-DC Converters
Vo3 or Vo4
Output Current Limitation
6.0 V
Io1 or Io2
= 12.8 A
All outputs are continuously protected against open-circuit
(no load) and short-circuit by an electronic current limitation.
Io1 or Io2 = 6.4 A
Io1 or Io2 = 3.2 A
Io1 or Io2 = 1.6 A
Io1 or Io2 = 0.4 A
Single- and double-output powertrains have a rectangular
current limitation characteristic. In double output power-trains
only the total current is limited allowing free choice of load
distribution between the two outputs of each power train up to
5.5 V
5.0 V
a total Io1 + Io4 = Io max or Io2 + Io3 = Io max
.
4.5 V
0
Thermal Considerations and Protection
Io3 or I
o4
If a converter is mounted upright in free air, allowing
unrestricted convection cooling, and is operated at its nominal
input voltage and output power at TA max (see table
Temperature specifications), the temperature measured at the
measurement point on the case TC (see Mechanical Data) will
approach TC max after an initial warm-up phase. However the
relationship between TA and TC depends heavily on the
operating conditions and system integration. The thermal
conditions are influenced significantly by the input voltage, the
output current, airflow, and the temperature of the adjacent
elements and surfaces. TA max is therefore contrary to TC max
only an indicative value.
4
8
12
16
A
Fig. 13
5 V tracking output Vo4 versus Io4 (powertrain 1) or
o3 versus Io3 (powertrain 2). Vi = Vi nom
V
Vo3 or Vo4
14 V
I
or I = 8 A
o1
o2
I
I
I
or I = 6 A
o1
o2
or I = 4 A
o2
o1
or I = 2 A
o2
13 V
12 V
11 V
o1
Io1 or Io2 = 0.4 A
A temperature sensor fitted on the main PCB disables the
output, when the case temperature exceeds TC max. The
converter automatically resumes, when the temperature
drops below this limit. An additional temperature sensor on
each power train reduces the output current limit of that power
train, when the temperature exceeds a safe level.
Io3 or Io4
0
2
4
6
8
A
Fig. 14
12 V tracking output Vo4 versus Io4 (powertrain 1) or
Vo3 versus Io3 (powertrain 2). Vi = Vi nom
Output Power at Reduced Temperature
Vo3 or Vo4
Operating the converters with an output current between Io nom
and Io max requires a reduction of the ambient temperature or
forced air cooling, in order to keep TC below 95 °C; see fig 17.
When TC max is exceeded, the thermal protection is activated
and disables the outputs.
17 V
Io1 or Io2 = 6.5 A
Io1 or Io2 = 4.8 A
Io1 or Io2 = 3.2 A
Io1 or Io2 = 1.6 A
Io1 or Io2 = 0.4 A
16 V
15 V
14 V
Note: Forced cooling or an additional heat sink can improve the
reliability or allow TA to go beyond TA max, provided that TC max is
not exceeded. In rack systems without proper thermal
management the converters should not be packed too closely
together! In such cases the use of a 5 or 6 TE front panel is
recommended.
Io3 or Io4
Po
5
6 A
4
0
1
2
3
05117b
Fig. 15
Po max
15 V tracking output Vo = f(Io), Vi = Vi nom
1.35 Po nom
Vo3 or Vo4
forced
cooling
0.5 m/s
26 V
Io1 or Io2 = 4 A
Io1 or Io2 = 3 A
Io1 or Io2 = 2 A
Io1 or Io2 = 1 A
Io1 or Io2 = 0.2 A
Po nom
convection
cooling
25 V
24 V
23 V
0.45 Po nom
T
C max
TA
50
60
70
80
90 °C
Io3 or Io4
0
1
2
3
4
A
Fig. 16
Fig. 17
Output power derating versus TA.
24 V tracking output Vo = f(Io), Vi = Vi nom
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P Series Data Sheet
90 – 192 Watt DC-DC Converters
Caution: To prevent damage, Vext should not exceed 20 V, nor be
negative.
Auxiliary Functions
Primary Inhibit (Remote On / Off)
Note: If output voltages are set higher than Vo nom, the output
currents should be reduced accordingly, so that the maximum
specified output power is not exceeded.
The inhibit input enables (logic low, pull down) or disables
(logic high, pull up or open-circuit) the output, if a logic signal
(TTL, CMOS) is applied. In systems consisting of several
converters, this feature may be used to control the activation
sequence by logic signals or to enable the power source to
start up, before full load is applied.
a) Adjustment by means of an external voltage:
2.72 V
Vext ≈ –––––––o–1– – 0.28 V
Vo nom
JM034b
Vext
–
+
Note: If this function is not used, pin 28 must be connected with
pin 32, otherwise the internal logic will disable the output.
Double-
output
powertrain
16
R
Vo1+
Table 6: Inhibit characteristics
Load 1
Load 4
i
Characteristic
Vinh Inhibit Vo = on Vi min – Vi max –50
Voltage C min – TC max
Conditions
min typ max Unit
Vo1–
Vo4+
Vo4–
Vi+
Vi–
0.8
50
V
T
Vo = off
I inh Inhibit current
2.4
Vinh = –50 V
Vinh = 0 V
–1000
–40
µA
V
inh = 50 V
900
The output response after enabling or disabling the output
with the inhibit input is shown in the figure below. See also
Input Data.
Fig. 19
Output adjust of Vo1 and Vo4 with an external voltage Vext
The other outputs are not influenced.
.
Vo/Vo nom
06159b
tr
tf
1.01
0.99
b) Adjustment by means of an external resistor:
The adjust resistor R1 is connected between pin 16 and S–
(14) to set Vo < Vo nom, (see table 7a), or the adjust resistor
0.1
0
t
t
t
R2 is connected between pin 16 and S+ (12) to set Vo
o nom (see table 7b).
>
ton
Vi
Vi min
0
V
Note: R inputs of n converters with paralleled outputs may be con-
nected together, but if only one external resistor is used, its value
should be R1/n or R2/n.
Vinh [V]
2.4
JM035b
0.8
Double-
output
powertrain
R
16
R2
Vo1+
Fig. 18
R1
Output response as a function of Vi (on/off switching) or
inhibit control
Load 1
i
Vo1–
Vo4+
Vo4–
Vi+
Vi–
Output Voltage Adjust of Vo1 and Vo4
Note: With open R-input, Vo = Vo nom
.
Load 4
The converters allow for adjustment of the voltage of power-
train 1. Powertrain 2 can not be adjusted (except for single-
output models). The programming is performed either by an
external control voltage Vext or an external resistor R1 or R2,
connected to the R-input. Trimming is limited to the values
given in the table Electrical Output Data.
With double-output powertrains, both outputs are influenced
by the R-input setting simultaneously.
Fig. 20
Output adjust of Vo1 and Vo4 using R1 or R2. The other
outputs are not influenced.
MELCHER
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P Series Data Sheet
90 – 192 Watt DC-DC Converters
Table 7a: R1 for Vo < Vo nom; approximate values (Vi nom, Io nom, series E 96 resistors); R2 not fitted
Vo nom = 3.3 V
Vo (V) R1 [kΩ]
Vo nom = 5.1 V
Vo nom = 12 V
Vo [V] 1
Vo nom = 15 V
Vo [V] 1
Vo nom = 24 V
Vo [V] 1
Vo (V)
R1 [kΩ]
R1 [kΩ]
R1 [kΩ]
R1 [kΩ]
2.0
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
3.0
3.1
3.2
5.62
6.49
7.50
8.66
4.0
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
5.0
14.0
15.8
18.2
21.0
24.3
29.4
36.5
47.5
63.4
97.6
200.0
6.5
7.0
7.5
8.0
8.5
9.0
9.5
10.0
10.5
11.0
11.5
13
14
15
16
17
18
19
20
11
22
23
4.22
5.11
6.19
7.5
8.0
8.5
9.0
16
17
18
19
20
21
22
23
24
25
26
27
28
29
4.12
4.75
5.49
6.34
7.5
8.87
10.5
12.7
15.4
29.6
25.5
34.8
54.9
110.0
14.0
15.0
16.0
17.0
18.0
19.0
20.0
20.5
21.0
21.5
22.0
22.5
23.0
23.5
28
30
32
34
36
38
40
41
42
43
44
45
46
47
5.23
6.19
7.5
9.5
9.31
11.5
14.7
19.6
22.6
27.4
34.0
43.2
59.0
88.7
182.0
10.2
9.1
10.0
10.5
11.0
11.5
12.0
12.5
13.0
13.5
14.0
14.5
12.1
14.3
17.4
22.1
28.7
39.2
61.9
12.7
11.5
14.7
19.6
27.4
43.2
88.7
Table 7b: R2 for Vo > Vo nom ; approximate values (Vi nom, Io nom, series E 96 resistors); R1 not fitted
Vo nom = 3.3 V
Vo (V) R1 [kΩ]
3.4 47.5
Vo nom = 5.1 V
Vo (V) R1 [kΩ]
5.2 226.0
Vo nom = 12 V
Vo [V] 1
Vo nom = 15 V
Vo [V] 1
Vo nom = 24 V
Vo [V] 1
R1 [kΩ]
R1 [kΩ]
R1 [kΩ]
12.2
24.4
24.8
25.2
25.6
26.0
26.4
1100
499
332
255
205
174
15.3
15.5
15.7
16.0
16.2
16.5
30.6
31.0
31.4
32.0
32.4
33.0
1130
665
475
332
280
232
24.5
25.0
25.5
26.0
26.4
49.0
50.0
51.0
52.0
52.8
1820
909
604
464
392
3.5
3.6
24.3
16.3
5.3
5.4
5.5
5.6
115.0
78.7
59.0
48.7
12.4
12.6
12.8
13.0
13.2
1
First column: single-output powertrains or double-output powertrains with separated/paralleled outputs, second column: outputs in
series connection.
Sense Lines
LED Indicators
Important: Sense lines should always be connected. Incorrectly
connected sense lines may damage the converter. If sense pins
are left open-circuit, the output voltages are not accurate.
The P Series converters exhibit a green LED "In OK",
signaling that the input voltage is within the specified range
provided that the unit is not disabled by inhibit signal.
This feature enables compensation of voltage drop across the
connector contacts and the load lines including ORing diodes
in true redundant systems.
A green LED "Out-OK" indicates for each powertrain that the
respective power train is working correctly, i.e. that its output
control loop is locked. This proves with high probability that
the regulated output exhibit the correct voltage; see also
Option D.
Applying generously dimensioned cross-section load leads
avoids troublesome voltage drop. To minimize noise pick-up,
wire sense lines parallel or twisted to the respective output
line. To be sure, connect the sense lines directly at the female
connector.
Note: Single-output models exhibit only 1 LED "Out-OK".
2nd Control Loop
The voltage difference between any sense line and its
respective power output pin (as measured on the connector)
should not exceed the following values at nominal output
voltage.
The 2nd output voltage of double-output power trains is
watched by an independent monitoring circuit. In the case of
an overvoltage, the primary control logic of the power train is
influenced to reduce the duty cycle, resulting in a lower
voltage on both outputs. Such an overvoltage may occur,
when the 1st output is fully charged and the 2nd output is
nearly unloaded – particularly with dynamic load changes.
Table 8: Voltage compensation allowed using sense lines
Output type
Total drop
<0.5 V
Negative line drop
<0.25 V
3.3, 5.1 V output
12, 15, 24 V output
<1.0 V
<0.5 V
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P Series Data Sheet
90 – 192 Watt DC-DC Converters
high input transient voltages, which typically occur in most
installations, but especially in battery-driven mobile
applications. The P Series has been successfully tested to the
following specifications:
Electromagnetic Compatibility (EMC)
A metal oxide VDR together with an input fuse and a
symmetrical input filter form an effective protection against
Electromagnetic Immunity
Table 9: Immunity type tests
Phenomenon
Standard
Level
Coupling
mode1
Value
applied
Waveform
0.1/1.0/0.1 s
1/50 ns
Source
imped.
Test
procedure
In
Perf.
oper. crit. 2
Supply related
surge
EN 50155:2007 --
clause 12.2.6
+i/–i
1.4 • Vbatt
0.2 Ω
1 positive
yes
yes
A
B
Electrostatic
discharge
(to case)
IEC/EN
61000-4-2
44
contact discharge
air discharge
8000 Vp
330 Ω
150 pF
10 positive and
10 negative
discharges
15000 Vp
Electromagnetic IEC/ EN
x5
antenna
antenna
20 V/m
20 V/m
10 Vm
5 V/m
80% AM, 1 kHz
80% AM, 1 kHz
n.a.
n.a.
80 – 1000 MHz
800 – 1000 MHz
1400 – 2000 MHz
2000 – 2700 MHz
5100 – 6000 MHz
yes
yes
A
A
field
61000-4-3
6
3 V/m
7
Electrical fast
transients/burst
IEC/EN
61000-4-4
37
4
direct coupling
±2000 Vp bursts of 5/50 ns, 50 Ω
60 s positive
60 s negative
transients per
coupling mode
yes
yes
yes
yes
A
B
A
A
+i/c,
–
i/c,+i/
–
i
5 kHz over 15 ms,
burst period: 300
±4000 Vp
3
capacit. coupl., o/c ±2000 Vp
ms
3
Surges
IEC/EN
61000-4-5
33
+i/c, –i/c
+i/–i
±2000 Vp
±1000 Vp
1.2/50 µs
12 Ω /9µF 5 pos. and 5 neg.
surges per
coupling mode
3
2 Ω/18 µF
Conducted
disturbances
IEC/EN
61000-4-6
38
i, o, signal wires
10 VAC
(140 dBµV)
AM 80%
1 kHz
150 Ω
0.15 – 80 MHz
yes
yes
A
A
9
Powerfrequency IEC/EN
100 A/m
60 s in all 3 axis
magnetic field
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.
2
3
4
5
6
7
8
9
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 2.4.
Corresponds to EN 50121-3-2:2016 table 5.1 and exceeds EN 50121-4:2016 table 2.1.
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.
Corresponds to EN 50121-3-2:2016 table 3.1 and EN 50121-4:2016 table 4.1 (radio frequency common mode).
Corresponds to EN 50121-4:2016 table 2.3.
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P Series Data Sheet
90 – 192 Watt DC-DC Converters
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 was executed with
horizontal and vertical polarization. The worse result is shown
in fig. 22.
Electromagnetic Emissions
All conducted emissions (fig. 21) have been tested according
to EN 55011, group 1, class A . These limits are much stronger
than requested in EN 50121-3-2:2016, table 2.1, and cor-
respond to EN 50121-4:2016, table 1.1. The limits in fig. 21
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. 21 (not shown).
TÜV-Divina, ESVS 30:R&S, BBA 9106/UHALP 9107:Schwarzb., QP, 2009-05-29
dBµV/m
Testdistance 10 m, BP4660-9RD B01395787 U00006
U =24 V, U =24 V I = 4 x 1.25 A
i o o
50
40
30
20
EN 55011 A
dBµV
07128b
80
EN 55011 A qp
EN 55011 B qp
60
10
0
40
20
30
50
100
200
500
1000 MHz
Fig. 22a
Radiated disturbances (quasi peak) in 10 m distance:
BP4660-9RD, Vi nom, Vo = 24 V, Io = 4 × 1.25 A
0
MHz
TÜV-Divina, ESDS 30, BBA 9106/UHALP 9107:Schwarzb., QP, 2015-10-05
dBµV/m
Testdistance 10 m, EP1601-9RG,
U
=110 V,
U
=24
V
I =
5
A
i
o
o
Fig. 21a
BP 2320-9RD
50
EN 55011 A qp
Typ. conducted disturbance voltage at the input (Vi nom, Ii nom
resistive load, quasi peak).
,
40
30
20
dBµV
07127b
80
EN 55011 A qp
10
0
EN 55011 B qp
60
30
50
100
200
500
1000 MHz
Fig. 22b
40
20
Radiated disturbances (quasi peak) in 10 m distance:
EP1601-9RG, Vi nom = 110 V, Vo = 24 V, Io = 5 A
0
MHz
Fig. 21b
CP 1001-7RB1
Typ. conducted disturbance voltage at the input (Vi nom, Ii nom
,
resitive load, quasi peak).
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P Series Data Sheet
90 – 192 Watt DC-DC Converters
Immunity to Environmental Conditions
Table 10: Mechanical and climatic stress
Test method
Standard
Test conditions
Status
Cab
Damp heat
steady state
EN 60068-2-78
MIL-STD-810D section 507.2
Temperature:
Relative humidity:
Duration:
40 ±2 °C
Converter
not
operating
93 +2/-3
%
56 days
Db
Bd
Ad
Ka
Fc
Damp heat test,
cyclic
EN 50155:2007, clause 12.2.5
EN 60068-2-30
Temperature:
Cycles (respiration) duration
55 °C and 25 °C
2× 24 h
Conv. not
operating
Dry heat test
steady state
EN 50155:2007, clause 12.2.4
EN 60068-2-2
Temperature:
Duration:
70 °C
6 h
Converter
operating
Cooling test
steady state
EN 50155:2007, clause 12.2.3
EN 60068-2-1
Temperature, duration
Performance test
–40 °C, 2 h
+25 °C
35±2 °C
16 h
Conv. not
operating
Salt mist test
sodium chloride
EN 50155:2007, clause 12.2.10 Temperature:
EN 60068-2-11, class ST2
Conv. not
operating
Duration:
Vibration
(sinusoidal)
EN 60068-2-6
MIL-STD-810D section 514.3
Acceleration amplitude:
0.35 mm (10 – 60 Hz)
5 gn = 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)
Fh
Random vibration
broad band
(digital control) and
guidance
EN 60068-2-64
Acceleration spectral density: 0.05 gn2/Hz
Converter
operating
Frequency band:
Acceleration magnitude:
Test duration:
8 – 500 Hz
4.9 gn rms
1.5 h (0.5 h in each axis)
Ea
--
Shock
(half-sinusoidal)
EN 60068-2-27
MIL-STD-810D section 516.3
Acceleration amplitude:
Bump duration:
Number of bumps:
50 gn = 490 m/s2
11 ms
18 (3 in each direction)
Converter
operating
Shock
EN 50155:2007 clause 12.2.11 Acceleration amplitude:
EN 61373 sect. 10, class B,
body mounted1
5.1 gn
30 ms
18 (3 in each direction)
Converter
operating
Bump duration:
Number of bumps:
--
Simulated long life EN 50155:2007 clause 12.2.11 Acceleration spectral density: 0.02 gn2/Hz
Converter
operating
testing at
EN 61373 sect. 8 and 9,
class B, body mounted1
Frequency band:
Acceleration magnitude:
Test duration:
5 – 150 Hz
increased random
vibration levels
0.8 gn rms
15 h (5 h in each axis)
1
Body mounted = chassis of a railway coach
Temperatures
Table 11: Temperature specifications, valid for an air pressure of 800 – 1200 hPa (800 – 1200 mbar)
Temperature
-7 (option)
typ
-9 (standard)
typ
Characteristics
Conditions
Converter operating 1
min
–25
–25
–40
max
71
95 1
min
–40
–40
–55
max
71
Unit
TA
TC
TS
Ambient temperature
Case temperature 2
° C
95 1
Storage temperature
Non operational
85
85
Rth C-A Thermal resistance case to ambient in still air
1.6 3
1.6 3
K/W
1
Operation with Po max requires reduction to TA max = 50 °C, TC max = 85° C respectively; see Thermal Considerations.
Overtemperature shutdown at TC >95 °C (temperature sensor)
See table 17 for long case and heatsink options B0, B1, B3.
2
3
Reliability
Table 12: MTBF and device hours
Ratings at specified
Model
Ground
benign
40 °C
Ground fixed
Ground
mobile
50 °C
Demonstrated hours
between failures 1
Case Temperature
40 °C
88 000 h
70 °C
MTBF acc. to
CP
340 000 h
42 000 h
40 000 h
757 000 h
MIL-HDBK-217F, notice 2
1
Statistical values, based upon an average of 4300 working hours per year and in general field use over 5 years; upgrades and
customer-induced errors are excluded.
MELCHER
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P Series Data Sheet
90 – 192 Watt DC-DC Converters
Mechanical Data
The converters are designed for insertion into a 19" rack according to IEC 60297-3. Dimensions in mm.
20.3
pin 4
H
G
F
E
Key Code System
European
Projection
Front plate
A
B
C
D
09099i
Silkscreen
without opt. Bx
Silk-
screen with
opt. Bx
M3; 5 deep
Measuring
point of case
temperature TC
AIRFLOW
PT2
PT1
pin 4
pin 32
70
Back plate
111
104
100
95
* 231.0 ...231.9 mm
for long case
(add 5000 to the
(
)
17.6
part number)
64.9
59.23
c
a
b
LED "In OK"
LEDs "Out OK"
= ∅ 4.5
Alternative LED positions for customer-specific models with long case:
a = "In OK", b = "Out 1 OK", c = "Out 2 OK" (front panel XMD168-G)
Fig. 23
Case Q04, weight approx. 500 g
Aluminum, fully enclosed, black,
EP powder coated, self cooling
Note: Long case, elongated by 60 mm for a 220 mm rack depth,
is available on request: Add 5000 to the part number !
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P Series Data Sheet
90 – 192 Watt DC-DC Converters
Safety and Installation Instructions
30
26 22
18 14 10
6
Connector Pin Allocation
The connector pin allocation table defines the electrical
potentials and the physical pin positions on the H15 and
H15S2 connector. Pin no. 26, protective earth, is a leading pin
to ensure that it makes contact with the female connector first.
10025a
32
28 24
20 16
12
8
4
Fig. 24a
View of male standard H15 connector.
The Key Code positions are shown in fig. 23.
Notes:
• The current through each standard H15 contact depends on the
female connector, the ambient temperature and the air flow in
the region of the connector. We recommend to limit the mean
current to 15 A at 50 °C and to 13 A at 71 °C.
30 26 22 18 14
8/10
4/6
• High currents require a large cross-sectional area of the
connections to the female contacts. We recommend solder or
screw terminal contacts. Each faston connection exhibits a
resistance of typ. 4 mΩ (max. 8 mΩ), which makes it less
suitable for high currents.
S10051a
32 28 24 20 16 12
• For single-output models with option K, both output contacts
must always be used and connected in parallel to the load with
large cross-sectional area wires or thick copper lands. The
efficiency is lower with option K.
Fig. 24b
View of male H15S2 connector (with high-current contacts)
used in P1000 and P1100 without option K. H15-S2
connectors have no Key Code system.
• High-current contacts of P1000 models allow for a high output
current. Their resistance is only typ. 1 mΩ.
Table 13: Pin allocation
Pin
41
61
P 1000
P2000
P3000
P4000
Vo+
Vo+
Vo–
Vo–
S+
Output 1 pos.
Output 1 pos.
Output 1 neg.
Output 1 neg.
Sense +
Vo1+
Vo2+
Vo1–
Vo2–
S1+
S1–
R
Output 1 pos.
Output 2 pos.
Output 1 neg.
Output 2 neg.
Sense 1 +
Vo1+
Vo2+
Vo1–
Vo2–
S1+
Output 1 pos.
Output 2 pos.
Output 1 neg.
Output 2 neg.
Sense 1 +
Vo1+
Vo2+
Vo1–
Vo2–
Vo4+
Vo4–
R
Output 1 pos.
Output 2 pos.
Output 1 neg.6
Output 2 neg.
Output 4 pos.
Output 4 neg.6
Adjust of Vo1/4
82
102
12
14
16
S–
Sense –
Sense 1 –
S1–
Sense 1 –
R
Adjust of Vo
Adjust of Vo1
Current share3
Sense 2 +
R
Adjust of Vo1
Current share3
Output 3 pos.
Output 3 neg.
Out OK+4
T
T
18
20
22
24
T5
Current share
S2+
S2–
Vo3+
Vo3–
Out OK+
n.c.
Vo3+
Vo3–
Output 3 pos.
Output 3 neg.
Out OK+ Out OK+4
n.c.
Not connected
Out OK+4 Out OK+4
Sense 2 –
Out OK+ Out OK+4
n. c.
Not connected
Out OK– Out OK–4
n.c.
Not connected
Out OK– Out OK–4
Not connected
Out OK–4
n.c.
Not connected
Out OK– Out OK–4
Out OK–
26
28
30
32
Prot. earth PE
Prot. earth PE
Prot. earth PE
Inhibit primary
Input pos.
Prot. earth PE
i
Inhibit primary
Input pos.
i
Inhibit primary
Input pos.
i
i
Inhibit primary
Input pos.
Vi+
Vi–
Vi+
Vi–
Vi+
Vi–
Vi+
Vi–
Input neg.
Input neg.
Input neg.
Input neg.
1
2
3
4
5
6
Pin 4/6 (high-current contact) for P1000 models with 3.3 V or 5.1 V output (H15S2 connector, no option K)
Pin 8/10 (high-current contact) for P1000 models with 3.3 V or 5.1 V output (H15S2 connector, no option K)
Option T for 3.3 V and 5.1 V powertrains: Only Io1 is influenced
Not connected, if option D is not fitted.
Not connected, if option T is not fitted.
Powertrains with 5.1 V and 3.3 V outputs have a common return: Vo1– and Vo4– are connected together.
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P Series Data Sheet
90 – 192 Watt DC-DC Converters
Installation Instructions
input and output and between input and auxiliary circuits
• Overvoltage category II
These converters are components, intended exclusively for
inclusion within other equipment by an industrial assembly
process or by a professionally competent person. Installation
must strictly follow the national safety regulations in respect of
the enclosure, mounting, creepage distances, clearances,
markings and segregation requirements of the end-use
application.
• Pollution degree 2 environment
• The converters fulfill the requirements of a fire enclosure.
CB-scheme is available (CB 06 07 24238 800).
The converters are subject to manufacturing surveillance in
accordance with the above mentioned UL standards and with
ISO 9001:2015.
Connection to the system shall be made via the female
connector H15 or H15S2 (see Accessories). Other installation
methods may not meet the safety requirements. Check for
hazardous voltages before altering any connections. Pin 26
(PE) is a leading pin and is reliably connected to the case. For
safety reasons it is essential to connect this pin to the pro-
tective earth.
Protection Degree and Cleaning Liquids
The DC-DC converters correspond to protection degree IP 40,
provided that the female connector is fitted to the converter.
Since the converters are not hermetically sealed. In order to
avoid possible damage, any penetration of liquids shall be
avoided.
The Vi– input (pin 32) is internally fused. This fuse is designed
to protect the converter against overcurrent caused by a
failure, but may not be able to satisfy all requirements.
External fuses in the wiring to one or both input pins (no. 30
and/or no. 32) may therefore be necessary to ensure
compliance with local requirements.
Railway Applications
The converters have been designed observing the railway
standards EN 50155:2007 and EN 50121-3-2:2016. All boards
are coated with a protective lacquer.
All models with version V114 (or later, except models with
connector H15S2 ) comply with EN 45545, HL1 to HL3. They
also comply with NF-F-16, Class I3/F2 (except when operated
in a vertical position, i.e. with the connector on top or on
bottom).
Important: If the inhibit function is not used, connect pin 28 (i)
with pin 32 (Vi–) to enable the output(s).
Do not open the converter, or the warranty will be invalidated.
Make sure that there is sufficient airflow available for
convection cooling. This should be verified by measuring the
case temperature at the specified measuring point, when the
converter is operated in the end-use application: TC max should
not be exceeded. Ensure that a failure of the converter does
not result in a hazardous condition; see also Safety of
Operator-Accessible Output Circuits.
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 any 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.
Standards and Approvals
The P Series converters are safety-approved to the latest
edition of IEC/EN 60950-1 and UL/CSA 60950-1.
They have been evaluated for:
• Class I equipment
• Building in
• Double or reinforced insulation based on 250 VAC between
Table 14: Isolation
Characteristic
Input to
outputs1 case+outputs
Outputs
to case
Output
to output4
Out OK signals to3
Unit
input
case
outputs
Electric
strength
test
Factory test 10 s
4.2
3.0
2.2/ 2.86 5
1.5/ 2.0 5
1.0
0.7
0.5/ 0.7 5
2.2/ 2.86 5
1.5/2.0 5
1.0
0.5/ 0.7 5 kVDC
0.35/ 0.5 5 kVAC
AC test voltage equivalent
to actual factory test
0.35/ 0.5 5
0.7
Insulation resistance
Creepage distances
>300 2
4.0
>300 2
3.25
>300 2
1.0
>100
>300 2
>100
>100
MΩ
mm
1
Pretest of subassemblies in accordance with IEC/EN 60950
2
3
4
5
Tested at 500 VDC
Option D
Powertrains with a combined 5.1 / 3.3 V output have a commun return.
2nd value valid for models with version V114 (or later)
MELCHER
The Power Partners.
BCD20010-G Rev AN1, 12-Nov-2018
Page 21 of 24
P Series Data Sheet
90 – 192 Watt DC-DC Converters
Safety of Operator-Accessible Output Circuits
(sum of nominal voltages if in series or +/– configuration) of
35 V.
If the output circuit of a DC-DC converter is operator
accessible, it shall be an SELV circuit according to the IEC/
EN 60950 related safety standards.
However, it is the sole responsibility of the installer to ensure
the compliance with the relevant and applicable safety
regulations.
The following table shows some possible installation
configurations, compliance with which causes the output
circuit of the DC-DC converter to be an SELV circuit
according to IEC/EN 60950 up to a configured output voltage
Use fuses and earth connections as per table below. See also
Installation Instructions.
Table 15: Safety concept leading to an SELV output circuit
Conditions Front end
DC-DC converter
Result
Nominal
supply
voltage
Minimum required grade
of insolation, to be pro-
vided by the AC-DC front
end, including mains
Maximum DC
output voltage
from the front
end1
Minimum required safety
status of the front end
output circuit
Measures to achieve the
specified safety status of the
output circuit
Safety status
of the DC-DC
converter
output circuit
supplied battery charger
Mains
Functional (i.e. there is
≤168 V
Primary circuit (The nominal Double or reinforced insula-
SELV circuit
≤ 250 VAC no need for electrical iso-
lation between the mains
supply circuit and the
DC-DC converter input
circuit)
voltage between any input
pin and earth shall not ex-
ceed 250 VAC or 240 VDC.) DC-DC converter) and
earthed case 2
tion, based on 250 VAC and
240 VDC (provided by the
Basic
Earth related hazardous
voltage secondary circuit
(The nominal voltage
between any input pin and
earth shall not exceed
250 VAC or 240 VDC.)
Double or reinforced insula-
tion, based on the maximum
nominal output voltage from
the front end (both provided
by the DC-DC converter) and
earthed case 2
Unearthed hazardous
voltage secondary circuit
Supplementary insulation,
based on 250 VAC and DC
and double or reinforced
insulation, based on the
maximum nominal output
voltage from the front end
(both provided by the DC-DC
converter) and earthed case 2
Supplementary
Unearthed hazardous
voltage secondary circuit 3
Basic insulation, based on
250 VAC and DC (provided
by the DC-DC converter)
1
The front end output voltage should match the specified input voltage range of the DC-DC converter. The maximum rated input
voltage of EP types is 150 V according to IEC/EN 60950.
2
3
The earth connection has to be procided by the installer according to the relevant safety standards, e.g., IEC/EN 60950.
Has to be insulated from earth by at least supplementary insulation (by the installer) according to the relevant safety standards,
e.g. IEC/EN 60950, based on the maximum nominal output voltage from the front end. If the converter case is accessible, it
has to be earthed or the front end output circuit has to be insulated from the converter case by at least basic insulation, based
on the maximum nominal mains supply voltage.
10052a
Max. 250 VAC or 240 VDC
Fuse
+
~
AC-DC
front
end
DC-DC
con-
verter
Mains
Battery
SELV
–
Fuse
~
Max. 250 VAC or 240 VDC
Earth
connection
Fig. 25
Schematic safety concept
MELCHER
The Power Partners.
BCD20010-G Rev AN1, 12-Nov-2018
Page 22 of 24
P Series Data Sheet
90 – 192 Watt DC-DC Converters
Description of Options
In redundant systems, the outputs of the converters are
decoupled by ORing diodes. Consequently, a failure of one
converter will not lead to a system failure.
Option D: Out OK Monitor
Option D monitors the state of the output error amplifiers on
both power trains rather than the input voltage, output voltage,
or the current limit. It signals a fault, when one of the error
amplifiers reaches its limit, which means that at least one
output voltage is not within its regulation limits. This could
occur, because the input voltage is below the minimum level
or the load current is too high. This function is not adjustable.
Since the voltage on the T-pin is referenced to the sense pin
S–, the installer must ensure that the S– pins of all parallel
converters are at the same electrical potential and that there
are no voltage drops across the connection lines between
these pins.
Double-output converters with outputs connected in series
can also be paralleled with current sharing, if pins Vo1– of all
converters are connected together; see fig. 10.
A galvanically isolated open-collector output generates the
“Out OK” signal. The circuit monitors simultaneously that
If the output voltages of parallel connected single-output
converters are programmed to a voltage other than Vo nom by
means of the R pin, the outputs should be adjusted
individually within a tolerance of ±1%.
• the input voltage is present and the inhibit signal enables
the converter - same logic as LED “In OK”
• the output voltages are within their limits - same logic as
LED(s) “Out OK”.
Note: Option T is only available for 3.3 V or 5.1 V single-output
power trains and only for output 1.
The open collector is conducting, if the monitored conditions
are fulfilled.
In double- or triple-output models, option T1 (pin 16) influences
only output 1. Then the R-function is not present, since no pin is
left for that function.
This option is located on a subassembly allowing special
circuit design on customer request.
Vp
Dimensioning of resistor value Rp ≥ –––––– .
50 mA
Option B0, B1, B3: Heat Sink
The converter is fitted with an additional heat sink.
Caution: The Out OK circuit is protected by a Zener diode. To
prevent damage, the applied current IOK should be limited to ±50
mA. The Zener diode should not be exposed to more than 0.25 W.
Table 17: Thermal resistance case to ambient (approx.
values)
Case
Thermalresistance
Thickness ofcase
Table 16: Output OK data
Standard, 160 mm long
Case, 220 mm long1
Option B0
Option B1
Option B3
1.6 K/W
1.4 K/W
1.4 K/W
1.3 K/W
1.2 K/W
< 20 mm
< 20 mm
< 30 mm
< 40 mm
< 50 mm
Characteristics / Conditions
min typ max Unit
VOK Out OK voltage
Output good, IOK < 50 mA
0.8 1.5
25
V
IOK Out OK current
1
Add 5000 to the part number !
Output out of range, VOK < 27 V 1
mA
1
for version V115 or later.
Option G
+
Vp
Rp
RoHS compliant for all six substances. Option G should be
chosen for new designs.
06151b
IOK
22
Out OK+
Output
monitoring
circuit
VOK
24
Out OK–
Fig. 26
Output OK circuit (option D)
Option T: Active Current Sharing
For 3.3 V and 5.1 V outputs only. The current share facility
should be used, when several converters are operated in
parallel. Examples could be high reliability n+1 redundant
systems or systems providing higher output power.
Using this feature reduces the stress of individual converters
and improves the reliability of the system. Interconnection of
the current-sharing T-pins causes the converters to share
their output currents evenly.
MELCHER
The Power Partners.
BCD20010-G Rev AN1, 12-Nov-2018
Page 23 of 24
P Series Data Sheet
90 – 192 Watt DC-DC Converters
• Connector retention brackets HZZ01217-G (CRB-Q)
• Different cable connector housings (cable hoods)
Accessories
A wide variety of electrical and mechanical accessories are
available:
For additional information, see the accessory data sheets
listed with each product series or individual model at our
website.
• Mating connectors including faston, screw, solder, or press-
fit terminals
• Front panels, system Schroff, for 19" rack 3 U,
configuration 4 TE (G04-Q04), 5 TE (G05-Q04), or 6 TE
(G06-Q04), including a support angel.
• Front panels system Schroff, for 19" rack 6 U,
configuration 5 TE (G05-6HE-Q04)
• Mechanical mounting supports for chassis, DIN-rail, and
PCB mounting
Connector retention
bracket HZZ01217-G
H15 female connector
with code key system
Front panel G05-6HE-Q04
Mounting plate Q for wall mounting
accommodating two P units for a
19" DIN-rack with 6 U, 5 TE.
(HZZ01215-G) with connector
retention clips Q (HZZ01229-G)
Universal mounting bracket for DIN-rail
and chassis mounting (HZZ00610-G)
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.
Copyright © 2018, Bel Power Solutions Inc. All rights reserved.
belfuse.com/power-solutions
MELCHER
The Power Partners.
BCD20010-G Rev AN1, 12-Nov-2018
Page 24 of 24
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