E48SP12020NNFA_技术文档

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FEATURES

High efficiency: 94.5% @12V/20A

Size:

58.4mm x 22.8mm x 10.9mm

(2.30”x0.90”x0.43”) W/O Heat spreader

58.4mm x 22.8mm x 12.7mm

(2.30”x0.90”x0.5”) With Heat spreader

Industry standard pin out

Fixed frequency operation

Input UVLO, Output OCP & OVP, OTP

Monotonic startup into normal and

Pre-biased loads

2250V Isolation and basic insulation

No minimum load required

No negative current during power on or

power off;

ISO 9001, TL 9000, ISO 14001, QS 9000,

OHSAS 18001 certified manufacturing

facility

UL/cUL 60950-1 (US & Canada) recognized.

Delphi Series E48SP Eighth Brick Family

DC/DC Power Modules: 48V in, 12V/20A out

OPTIONS

The Delphi Series E48SP, 36~75V input, Eighth Brick, single output,

isolated DC/DC converters are the latest offering from a world leader in

power systems technology and manufacturing ― Delta Electronics,

Inc. The E48SP product provides up to 240 watts of power in an

industry standard footprint and pinout. The E48SP converter

operates from an input voltage of 36V to 75V. Efficiency is 94.5% for

the 12V output at full load. With creative design technology and

optimization of component placement, these converters possess

outstanding electrical and thermal performance, as well as extremely

high reliability under highly stressful operating conditions. All models

are fully protected from abnormal input/output voltage, current, and

temperature conditions. The Delphi Series converters meet all safety

requirements with basic insulation.

Positive On/Off logic

Short pin lengths available

Latched over voltage protection

APPLICATIONS

Telecom/DataCom

Wireless Networks

Optical Network Equipment

Server and Data Storage

Industrial/Test Equipment

DATASHEET

DS_E48SP12020_08252011

TECHNICAL SPECIFICATIONS

(T_A=25°C, airflow rate=300 LFM, V_in=48Vdc, nominal Vout unless otherwise noted.)

PARAMETER

NOTES and CONDITIONS

E48SP12020 (Standard)

Min.

Typ.

Max.

Units

ABSOLUTE MAXIMUM RATINGS

Input Voltage

Continuous

80

100

122

110

Vdc

°C

Transient (100ms)

100ms

Operating Hot Spot Temperature (Without heat spreader)

Operating Case Temperature (With heat spreader)

Storage Temperature

Refer to figure 18 for measuring point

Refer to figure 20 for measuring point

-40

-55

°C

125

2250

°C

Input/Output Isolation Voltage

INPUT CHARACTERISTICS

Operating Input Voltage

Input Under-Voltage Lockout

Turn-On Voltage Threshold

Turn-Off Voltage Threshold

Lockout Hysteresis Voltage

Maximum Input Current

No-Load Input Current

Vdc

36

75

Vdc

32.5

30.5

1

34

32

2

35.5

33.5

3

Vdc

A

Vin=36V, 100% Load,

7

7.8

150

12

70

8

mA

A²s

A

Off Converter Input Current

Inrush Current(I²t)

With 100uF external input capacitor

Peak, Vin=36V, 100% Load, With 5000uF Co

RMS, Vin=48V, With 100uF input cap.

P-P thru 12µH inductor, 5Hz to 20MHz

120 Hz

1

Start up Current

7

0.16

6

12

Input Terminal Ripple Current

Input Reflected-Ripple Current

Input Voltage Ripple Rejection

OUTPUT CHARACTERISTICS

Output Voltage Set Point

Output Voltage Regulation

Over Load

0.24

A

mA

dB

60

Vin=48V, Io=Io.max, Tc=25°C

11.67

11.5

11.85

12.02

Vdc

Io=Io,min to Io,max

Vin=36V to 75V

Tc=-40°C to 125°C

+20

+15

mV

V

Over Line

Over Temperature

±120

11.85

Total Output Voltage Range

Output Voltage Ripple and Noise

Peak-to-Peak

over sample load, and temperature

12.2

5Hz to 20MHz bandwidth

Full Load, 1µF ceramic, 10µF tantalum

Full input voltage range

100

40

200

80

mV

A

RMS

Operating Output Current Range

Output DC Current-Limit Inception

DYNAMIC CHARACTERISTICS

Output Voltage Current Transient

Positive Step Change in Output Current

Negative Step Change in Output Current

Setting Time (within 1% Vout nominal)

Turn-On Transient

0

20

Output Voltage 10% Low

110

150

%

48V, 10µF Tan & 1µF Ceramic load cap, 0.1A/µs

50% Io.max to 75% Io.max

200

400

200

mV

µs

75% Io.max to 50% Io.max

Start-Up Time, From On/Off Control

Start-Up Time, From Input

Maximum Output Capacitance

EFFICIENCY

30

40

ms

µF

Full load; no overshoot of Vout at startup

5000

100% Load

Vin=48V

93.5

94

94.5

95

%

60% Load

ISOLATION CHARACTERISTICS

Input to Output

2250

Vdc

MΩ

pF

Isolation Resistance

10

Isolation Capacitance

1500

245

FEATURE CHARACTERISTICS

Switching Frequency

kHz

ON/OFF Control, Negative Remote On/Off logic

Logic Low (Module On)

Von/off

-0.7

2.4

0.8

50

V

Logic High (Module Off)

ON/OFF Control, Positive Remote On/Off logic

Logic Low (Module Off)

Von/off

-0.7

2.4

0.8

50

V

Logic High (Module On)

ON/OFF Current (for both remote on/off logic)

Leakage Current (for both remote on/off logic)

Output Over-Voltage Protection

GENERAL SPECIFICATIONS

MTBF

Ion/off at Von/off=0.0V

Ion/off at Von/off=2.4V

Logic High, Von/off=15V

Over full temp range; % of nominal Vout

0.5

mA

µA

V

10

50

18

14.6

Io=100% of Io, max; 300LFM; Ta=25°C

Open frame

1.19

29.1

39.2

132

M hours

grams

°C

Weight

With heat spreader

Over-Temperature Shutdown ( Without heat spreader)

Refer to figure 18 for measuring point

Refer to figure 20 for measuring point

Over-Temperature Shutdown

(With heat spreader)

120

°C

2

DS_E48SP12020_08252011

ELECTRICAL CHARACTERISTICS CURVES

20

96

95

94

93

92

91

90

89

88

87

86

18

16

14

12

10

8

36V

48V

75V

36V

48V

75V

6

4

2

0

2

4

6

8

10

12

14

16

18

20

2

4

6

8

10

12

14

16

18

20

Output Current(A)

Figure 1: Efficiency vs. load current for minimum, nominal, and

Figure 2: Power dissipation vs. load current for minimum, nominal,

maximum input voltage at 25°C

and maximum input voltage at 25°C

8

7

6

5

4

3

2

1

15

12

9

6

3

0

5

10

15

20

25

30

30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 76

Output Current(A)

Input voltage(V)

Figure 3: Typical full load input characteristics at room

temperature

Figure 4: Output voltage regulation vs load current showing typical

current limit curves and converter shutdown points for minimum,

nominal, and maximum input voltage at room temperature

3

DS_E48SP12020_08252011

ELECTRICAL CHARACTERISTICS CURVES

For Negative Remote On/Off Logic

Figure 5: Turn-on transient at zero load current (10ms/div).

Vin=48V. Top Trace: Vout, 5V/div; Bottom Trace: ON/OFF input,

5V/div

Figure 6: Turn-on transient at full rated load current (constant

current load) (10 ms/div). Vin=48V. Top Trace: Vout, 5V/div;

Bottom Trace: ON/OFF input, 5V/div

For Input Voltage Start up

Figure 7: Turn-on transient at zero load current (10 ms/div).

Vin=48V. Top Trace: Vout, 5V/div, Bottom Trace: input voltage,

30V/div

Figure 8: Turn-on transient at full rated load current (constant

current load) (10 ms/div). Vin=48V. Top Trace: Vout, 5V/div;

Bottom Trace: input voltage, 30V/div

4

DS_E48SP12020_08252011

ELECTRICAL CHARACTERISTICS CURVES

Figure 9: Output voltage response to step-change in load

current (75%-50% of Io, max; di/dt = 0.1A/µs, Vin=48V). Load

cap: 10µF, tantalum capacitor and 1µF ceramic capacitor. Top

Trace: Vout (80mV/div, 200us/div); Bottom Trace: Io (10A/div,

200us/div). Scope measurement should be made using a BNC

cable (length shorter than 20 inches). Position the load

between 51 mm to 76 mm (2 inches to 3 inches) from the

module..

Figure 10: Output voltage response to step-change in load

current (50%-75% of Io, max; di/dt = 0.1A/µs, Vin=48V). Load

cap: 10µF, tantalum capacitor and 1µF ceramic capacitor. Top

Trace: Vout (80mV/div, 200us/div); Bottom Trace: Io (10A/div,

200us/div). Scope measurement should be made using a BNC

cable (length shorter than 20 inches). Position the load

between 51 mm to 76 mm (2 inches to 3 inches) from the

module..

is

ic

Vin+

Vin-

+

Cs: 220uF

100uF,

ESR=0.2 ohm @

25^oC 100KHz

Figure 11: Test set-up diagram showing measurement points

for Input Terminal Ripple Current and Input Reflected Ripple

Current.

Figure 12: Input Terminal Ripple Current, i_c, at full rated output

current and nominal input voltage with 12µH source impedance

and 100µF electrolytic capacitor (200 mA/div, 2us/div).

Note: Measured input reflected-ripple current with a simulated

source Inductance (L_TEST) of 12 µH. Capacitor Cs offset

possible battery impedance. Measure current as shown below

5

DS_E48SP12020_08252011

ELECTRICAL CHARACTERISTICS CURVES

Copper Strip

Vo(+)

SCOPE

RESISTIVE

LOAD

10u

1u

Vo(-)

Figure 13: Input reflected ripple current, i_s, through a 12µH

source inductor at nominal input voltage and rated load current

(20 mA/div, 2us/div).

Figure 14: Output voltage noise and ripple measurement test

setup

Figure 15: Output voltage ripple at nominal input voltage and

rated load current (Io=20A)(20 mV/div, 2us/div)

Load capacitance: 1µF ceramic capacitor and 10µF tantalum

capacitor. Bandwidth: 20 MHz. Scope measurements should be

made using a BNC cable (length shorter than 20 inches).

Position the load between 51 mm to 76 mm (2 inches to 3

inches) from the module.

6

DS_E48SP12020_08252011

DESIGN CONSIDERATIONS

Safety Considerations

The power module must be installed in compliance with

the spacing and separation requirements of the

end-user’s safety agency standard, i.e., UL60950-1,

CAN/CSA-C22.2, No. 60950-1 and EN60950-1+A11 and

IEC60950-1, if the system in which the power module is

to be used must meet safety agency requirements.

Basic insulation based on 75 Vdc input is provided

between the input and output of the module for the

purpose of applying insulation requirements when the

input to this DC-to-DC converter is identified as TNV-2

or SELV. An additional evaluation is needed if the

source is other than TNV-2 or SELV.

Input Source Impedance

The impedance of the input source connecting to the

DC/DC power modules will interact with the modules and

affect the stability. A low ac-impedance input source is

recommended. If the source inductance is more than a

few µH, we advise adding a 33 to 100 µF electrolytic

capacitor (ESR < 0.7 Ω at 100 kHz) mounted close to the

input of the module to improve the stability.

Layout and EMC Considerations

Delta’s DC/DC power modules are designed to operate in

a wide variety of systems and applications. For design

assistance with EMC compliance and related PWB layout

issues, please contact Delta’s technical support team. An

external input filter module is available for easier EMC

compliance design. Below is the reference design for an

input filter tested with E48SP12020XXXX to meet class B

in CISSPR 22.

When the input source is SELV circuit, the power module

meets SELV (safety extra-low voltage) requirements. If

the input source is a hazardous voltage which is greater

than 60 Vdc and less than or equal to 75 Vdc, for the

module’s output to meet SELV requirements, all of the

following must be met:

The input source must be insulated from the ac

mains by reinforced or double insulation.

The input terminals of the module are not operator

accessible.

Schematic and Components List

Vin(+) Vo(+)

If the metal baseplate / heatspreader is grounded

the output must be also grounded.

CY1

Cin

E48SP12020

CX

LOAD

A SELV reliability test is conducted on the system

where the module is used, in combination with the

module, to ensure that under a single fault,

hazardous voltage does not appear at the module’s

output.

Vin

-

L1

CY2

Vin(-) Vo(-)

CY

When installed into a Class II equipment (without

grounding), spacing consideration should be given to

the end-use installation, as the spacing between the

module and mounting surface have not been evaluated.

Cin is 100uF*2 low ESR Aluminum cap;

CX is 2.2uF ceramic cap;

CY1 are 10nF ceramic caps;

CY2 are 10nF ceramic caps;

CY is 1nF ceramic cap;

The power module has extra-low voltage (ELV) outputs

when all inputs are ELV.

L1 is common-mode inductor, L1=0.53mH;

Test Result: Vin=48V, Io=20A,

This power module is not internally fused. To achieve

optimum safety and system protection, an input line fuse

is highly recommended. The safety agencies require a

Fast-acting fuse with 30A maximum rating to be

installed in the ungrounded lead. A lower rated fuse can

be used based on the maximum inrush transient energy

and maximum input current.

Soldering and Cleaning Considerations

Post solder cleaning is usually the final board assembly

process before the board or system undergoes electrical

testing. Inadequate cleaning and/or drying may lower the

reliability of a power module and severely affect the

finished circuit board assembly test. Adequate cleaning

and/or drying is especially important for un-encapsulated

and/or open frame type power modules. For assistance

on appropriate soldering and cleaning procedures,

please contact Delta’s technical support team.

Yellow line is quasi peak mode; Blue line is average mode.

DS_E48SP12020_08252011

7

FEATURES DESCRIPTIONS

Over-Current Protection

Remote On/Off

The modules include an internal output over-current

protection circuit, which will endure current limiting for

an unlimited duration during output overload. If the

output current exceeds the OCP set point, the modules

will automatically shut down, and enter hiccup mode or

latch mode, which is optional.

The remote on/off feature on the module can be either

negative or positive logic. Negative logic turns the module

on during a logic low and off during a logic high. Positive

logic turns the modules on during a logic high and off

during a logic low.

Remote on/off can be controlled by an external switch

between the on/off terminal and the Vi(-) terminal. The

switch can be an open collector or open drain.

For hiccup mode, the module will try to restart after

shutdown. If the overload condition still exists, the

module will shut down again. This restart trial will

continue until the overload condition is corrected.

For negative logic if the remote on/off feature is not used,

please short the on/off pin to Vi(-). For positive logic if the

remote on/off feature is not used, please leave the on/off

pin floating.

For latch mode, the module will latch off once it

shutdown. The latch is reset by either cycling the input

power or by toggling the on/off signal for one second.

The module will not response to the remote on/off signal

which is less than 120us.

Over-Voltage Protection

The modules include an internal output over-voltage

protection circuit, which monitors the voltage on the

output terminals. If this voltage exceeds the over-voltage

set point, the module will shut down, and enter in hiccup

mode or latch mode, which is optional. The default

mode is hiccup mode.

Vo(+)

Vi(+)

R

ON/OFF

Vi(-)

Load

For hiccup mode, the module will try to restart after

shutdown. If the output overvoltage condition still exists,

the module will shut down again. This restart trial will

continue until the over-voltage condition is corrected.

Vo(-)

Figure 16: Remote on/off implementation

For latch mode, the module will latch off once it

shutdown. The latch is reset by either cycling the input

power or by toggling the on/off signal for one second.

Over-Temperature Protection

The over-temperature protection consists of circuitry

that provides protection from thermal damage. If the

temperature exceeds the over-temperature threshold

the module will shut down, and enter in auto-restart

mode or latch mode, which is optional.

For auto-restart mode, the module will monitor the

module temperature after shutdown. Once the

temperature is dropped and within the specification, the

module will be auto-restart.

For latch mode, the module will latch off once it

shutdown. The latch is reset by either cycling the input

power or by toggling the on/off signal for one second.

8

DS_E48SP12020_08252011

THERMAL CONSIDERATIONS

Thermal management is an important part of the system

design. To ensure proper, reliable operation, sufficient

cooling of the power module is needed over the entire

temperature range of the module. Convection cooling is

usually the dominant mode of heat transfer.

Hence, the choice of equipment to characterize the

thermal performance of the power module is a wind

tunnel.

Thermal Testing Setup

Delta’s DC/DC power modules are characterized in

heated vertical wind tunnels that simulate the thermal

environments encountered in most electronics

equipment. This type of equipment commonly uses

vertically mounted circuit cards in cabinet racks in which

the power modules are mounted.

The following figure shows the wind tunnel

characterization setup. The power module is mounted

on a test PWB and is vertically positioned within the

wind tunnel. The space between the neighboring PWB

and the top of the power module is constantly kept at

6.35mm (0.25’’).

PWB

MODULE

FACING PWB

AIR VELOCITY

AND AMBIENT

TEMPERATURE

MEASURED BELOW

THE MODULE

50.8 (2.0”)

12.7 (0.5”)

AIR FLOW

Note: Wind Tunnel Test Setup Figure Dimensions are in millimeters and (Inches)

Figure 17: Wind tunnel test setup

Thermal Derating

Heat can be removed by increasing airflow over the

module.

To enhance system reliability; the power

module should always be operated below the maximum

operating temperature. If the temperature exceeds the

maximum module temperature, reliability of the unit may

be affected.

9

DS_E48SP12020_08252011

THERMAL CURVES

(WITH HEAT SPREADER)

(WITHOUT HEAT SPREADER)

Figure 20: Temperature measurement location

* The allowed maximum hot spot temperature is defined at 110℃

E48SP12020(Standard) Output Current vs. Ambient Temperature and Air Velocity

Figure 18: Temperature measurement location

* The allowed maximum hot spot temperature is defined at 122℃

E48SP12020(Standard) Output Current vs. Ambient Temperature and Air Velocity

Output Current (A)

@Vin = 48V (Transverse Orientation,With Heatspreader)

Output Current (A)

@Vin = 48V (Transverse Orientation)

20

18

Natural

Convection

Natural

Convection

16

100LFM

14

12

10

8

100LFM

200LFM

12

200LFM

300LFM

400LFM

300LFM

10

400LFM

8

500LFM

6

500LFM

4

600LFM

4

2

0

600LFM

2

0

25

30

35

40

45

50

55

60

65

70

75

80

85

25

30

35

40

45

50

55

60

65

70

75

80

85

Ambient Temperature (℃)

Figure 21: Output current vs. ambient temperature and air velocity

@Vin=48V(Transverse Orientation, with heat spreader)

Figure 19: Output current vs. ambient temperature and air

velocity @Vin=48V(Transverse Orientation, without heat

spreader)

10

DS_E48SP12020_08252011

PICK AND PLACE LOCATION

RECOMMENDED PAD LAYOUT (SMD)

SURFACE-MOUNT TAPE & REEL

11

DS_E48SP12020_08252011

LEADED (Sn/Pb) PROCESS RECOMMEND TEMPERATURE PROFILE

(SMD MODEL)

Peak temp.

2nd Ramp-up temp.

210~230°C 5sec.

1.0~3.0°C /sec.

250

Pre-heat temp.

140~180°C 60~120 sec.

200

Cooling down rate <3°C /sec.

Ramp-up temp.

0.5~3.0°C /sec.

150

100

50

Over 200°C

40~50sec.

0

60

120

Time ( sec. )

180

240

300

Note: The temperature refers to the pin of E48SP, measured on the pin +Vout joint.

LEAD FREE (SAC) PROCESS RECOMMEND TEMPERATURE PROFILE

(SMD MODEL)

Temp.

Peak Temp. 240 ~ 245 ℃

217℃

200℃

Ramp down

max. 4℃/sec.

Preheat time

100~140 sec.

150℃

25℃

Time Limited 90 sec.

above 217℃

Ramp up

℃

max. 3 /sec.

Time

Note: The temperature refers to the pin of E48SP, measured on the pin +Vout joint.

12

DS_E48SP12020_08252011

MECHANICAL DRAWING (WITHOUT HEATSPREADER)

SURFACE-MOUNT MODULE

THROUGH-HOLE MODULE

13

DS_E48SP12020_08252011

MECHANICAL DRAWING (WITH HEATSPREADER)

*For modules with through-hole pins and the optional heatspreader, they are intended for wave soldering assembly

onto system boards, please do not subject such modules through reflow temperature profile.

THROUGH-HOLE MODULE

Pin No.

Name

Function

1

2

3

4

5

+Vin

Positive input voltage

ON/OFF

-Vin

Remote ON/OFF

Negative input voltage

Negative output voltage

Positive output voltage

-Vout

+Vout

Pin Specification:

Pins 1-3

1.00mm (0.040”) diameter

1.50mm (0.060”) diameter

Pins 4 & 5

All pins are copper with Tin plating.

14

DS_E48SP12020_08252011

PART NUMBERING SYSTEM

E

48

S

P

120

20

N

R

F

A

Type of

Product

Input

Voltage

Number of Product

Output

Voltage

Output

Current

ON/OFF

Logic

Length/Type

Option Code

Outputs

Series

E- Eighth 48-36V~75V S- Single

Brick

P - High

Power

120 - 12V

20 -20A

N- Negative

R- 0.170”

N- 0.145”

S- 0.188”

T- 0.220”

M- SMD

A - Standard

H - With heatspreader

F- RoHS 6/6

(Lead Free)

MODEL LIST

MODEL NAME

E48SP12020NRFA

INPUT

OUTPUT

EFF @ 100% LOAD

36V~75V

9A

12V

20A

94.5%

Default remote on/off logic is negative and pin length is 0.170”

For different remote on/off logic and pin length, please refer to part numbering system above or contact your local sales

office.

*For modules with through-hole pins and the optional heatspreader, they are intended for wave soldering assembly

onto system boards, please do not subject such modules through reflow temperature profile.

CONTACT: www.delta.com.tw/dcdc

USA:

Europe:

Asia & the rest of world:

Telephone:

Telephone: +41 31 998 53 11

Fax: +41 31 998 53 53

Email: DCDC@delta-es.tw

Telephone: +886 3 4526107 x 6220~6224

East Coast: 978-656-3993

West Coast: 510-668-5100

Fax: (978) 656 3964

Email: DCDC@delta-corp.com

Fax: +886 3 4513485

Email: DCDC@delta.com.tw

WARRANTY

Delta offers a two (2) year limited warranty. Complete warranty information is listed on our web site or is available upon

request from Delta.

Information furnished by Delta is believed to be accurate and reliable. However, no responsibility is assumed by Delta for

its use, nor for any infringements of patents or other rights of third parties, which may result from its use. No license is

granted by implication or otherwise under any patent or patent rights of Delta. Delta reserves the right to revise these

specifications at any time, without notice.

15

DS_E48SP12020_08252011


型号：	E48SP12020NNFA
厂家：	DELTA ELECTRONICS, INC.
描述：	Delphi Series E48SP Eighth Brick Family DC/DC Power Modules: 48V in, 12V/20A out 德尔福系列E48SP 1/8砖系列DC / DC模块电源： 48V的， 12V / 20A出
文件：	总15页 (文件大小：475K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

E48SP12020NNFA [DELTA]

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