S48SA05003PRFA [DELTA]

Delphi Series S48SA, 33W Family DC/DC Power Modules: 48V in, 1.2V/12A out; 德尔福系列S48SA ， 33W系列DC / DC模块电源： 48V IN， 1.2V / 12A出


型号：	S48SA05003PRFA
厂家：	DELTA ELECTRONICS, INC.
描述：	Delphi Series S48SA, 33W Family DC/DC Power Modules: 48V in, 1.2V/12A out 德尔福系列S48SA ， 33W系列DC / DC模块电源： 48V IN， 1.2V / 12A出
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FEATURES

ꢀ

High efficiency: 84% @ 1.2V/ 12A

ꢀ

Size: 47.2mm x 29.5mm x 8.35mm

(1.86" x 1.16" x 0.33")

ꢀ

Low profile: 0.33"

Industry standard footprint and pin out

Surface mountable

Fixed frequency operation

Input UVLO, Output OCP, OVP

No minimum load required

2:1 input voltage range

Basic insulation

ISO 9001, TL 9000, ISO 14001,

QS9000, OHSAS18001 certified

manufacturing facility

ꢀ

UL/cUL 60950 (US & Canada)

recognized, and TUV (EN60950) certified

CE mark meets 73/23/EEC and

93/68/EEC directive

Delphi Series S48SA, 33W Family

DC/DC Power Modules: 48V in, 1.2V/12A out

OPTIONS

ꢀ

Positive on/off logic

The Delphi Series S48SA, surface mountable, 48V input, single

output, isolated DC/DC converters are the latest offering from a

world leader in power system and technology and manufacturing –

Delta Electronics, Inc. This product family provides up to 33 watts

of power or up to 12A of output current (1.8V or below). 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 protected from

abnormal input/output voltage and current conditions.

ꢀ

SMD or Through hole mounting

APPLICATIONS

ꢀ

Telecom/DataCom

Wireless Networks

Optical Network Equipment

Server and Data Storage

Industrial/Test Equipment

DATASHEET

DS_S48SA1R212_05122006

Delta Electronics, Inc.

TECHNICAL SPECIFICATIONS

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

NOTES and CONDITIONS

S48SA1R212NRFA

PARAMETER

Min.

Typ.

Max.

Units

ABSOLUTE MAXIMUM RATINGS

Input Voltage

Continuous

Transient (100ms)

Operating Temperature

Storage Temperature

100

102

125

Vdc

°C

100ms

Refer to Figure 18 for measuring point

-40

-55

°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

Off Converter Input Current

Inrush Current(I²t)

Input Reflected-Ripple Current

Input Voltage Ripple Rejection

OUTPUT CHARACTERISTICS

Output Voltage Set Point

Output Voltage Regulation

Over Load

1 minute

1500

Vdc

32.5

30.5

35.5

33.5

100% Load, 36Vin

0.85

0.01

A²s

P-P thru 12µH inductor, 5Hz to 20MHz

120 Hz

Vin=48V, Io=50%Io.max, Ta=25℃

1.17

1.15

1.20

1.23

Io=Io,min to Io,max

Vin=36V to75V

Ta=-40℃ to 85℃

±2

100

±10

±5

300

1.25

ppm/℃

Over Line

Over Temperature

Total Output Voltage Range

Output Voltage Ripple and Noise

Peak-to-Peak

Over sample load, line and temperature

5Hz to 20MHz bandwidth

Full Load, 1µF ceramic, 10µF tantalum

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

Settling Time to 1% of Final value

Turn-On Transient

13.2

Output Voltage 10% Low

15.6

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

50% Io,max to 75% Io,max

200

100

µs

75% Io,max to 50% Io.max

Start-Up Time, From On/Off Control

Start-Up Time, From Input

Maximum Output Capacitance

EFFICIENCY

2200

µF

Full load; 5% overshoot of Vout at startup

100% Load

ISOLATION CHARACTERISTICS

Isolation Voltage

Isolation Resistance

Isolation Capacitance

FEATURE CHARACTERISTICS

Switching Frequency

1500

MΩ

1500

330

kHz

ON/OFF Control, (Logic Low-Module ON)

Logic Low

Von/off at Ion/off=1.0mA

Von/off at Ion/off=0.0 µA

0.8

Logic High

ON/OFF Current

Leakage Current

Output Voltage Trim Range

Output Over-Voltage Protection(Hiccup)

GENERAL SPECIFICATIONS

Calculated MTBF

Ion/off at Von/off=0.0V

Logic High, Von/off=15V

Across Trim Pin & +Vo or –Vo, Pout≦max rated

Over full temp range; % of nominal Vout

+10

160

-10

115

125

Io=80% of Io, max; Tc=40°C

TBD

115

hours

grams

°C

Weight

Over-Temperature Shutdown

Refer to Figure 18 for measuring point

DS_S48SA1R212_05122006

ELECTRICAL CHARACTERISTICS CURVES

4.0

3.5

3.0

2.5

2.0

1.5

1.0

0.5

0.0

36Vin

48Vin

75Vin

48Vin

75Vin

10 11 12

OUTPUT CURRENT (A)

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

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

maximum input voltage at 25°C.

nominal, and maximum input voltage at 25°C.

0.6

Io=10A

Io=6A

Io=1A

0.5

0.4

0.3

0.2

0.1

0.0

30 35 40 45 50 55 60 65 70 75

INPUT VOLTAGE (V)

Figure 3: Typical input characteristics at room temperature.

Figure 4: Turn-on transient at full rated load current (1 ms/div).

Top Trace: Vout (500mV/div); Bottom Trace: ON/OFF Control

(5V/div).

DS_S48SA1R212_05122006

ELECTRICAL CHARACTERISTICS CURVES

Figure5: Turn-on transient at zero load current (1 ms/div). Top

Trace: Vout (500mV/div); Bottom Trace: ON/OFF Control

(5V/div).

Figure 6: Output voltage response to step-change in load

current (50%-75% of Io, max; di/dt = 0.1A/µs). Load cap: 10µF,

100 mΩESR tantalum capacitor and 1µF ceramic capacitor.

Top Trace: Vout (20mV/div), Bottom Trace: Iout (5A/div).

Figure 7: Output voltage response to step-change in load

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

Figure 8: Test set-up diagram showing measurement points

for Input Reflected Ripple Current (Figure 9).

Note: Measured input reflected-ripple current with a simulated

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

possible battery impedance.

10µF,

ceramic capacitor.

Trace: Iout 5A/div).

100 mΩESR tantalum capacitor and 1µF

Top Trace: Vout (20mV/div), Bottom

DS_S48SA1R212_05122006

ELECTRICAL CHARACTERISTICS CURVES

Copper Strip

Vo(+)

Vo(-)

SCOPE

RESISTIVE

LOAD

10u

Figure 10: Output voltage noise and ripple measurement test

setup. 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 9: Input Reflected Ripple Current, i , at full rated output

current and nominal input voltage with 12µH source impedance

and 33µF electrolytic capacitor (2 mA/div).

1.4

1.2

1.0

0.8

0.6

0.4

Vin=48V

0.2

0.0

2.0

4.0

6.0

8.0 10.0 12.0 14.0 16.0

LOAD CURRENT (A)

Figure 11: Output voltage ripple at nominal input voltage and

rated load current (10 mV/div). Load capacitance: 1µF ceramic

capacitor and 10µF tantalum capacitor. Bandwidth: 20 MHz.

Figure 12: Output voltage vs. load current showing typical

current limit curves and converter shutdown points.

DS_S48SA1R212_05122006

DESIGN CONSIDERATIONS

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 normal-blow fuse with 3A 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.

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 10 to 100 µF

electrolytic capacitor (ESR < 0.7 Ω at 100 kHz)

mounted close to the input of the module to improve the

stability.

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.

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.

Application notes to assist designers in addressing

these issues are pending release.

Safety Considerations

The power module must be installed in compliance with

the spacing and separation requirements of the end-

user’s safety agency standard if the system in which the

power module is to be used must meet safety agency

requirements.

When the input source is 60Vdc or below, 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 any

hazardous voltages, including the ac mains, with

reinforced insulation.

ꢀ

One Vi pin and one Vo pin are grounded, or all the

input and output pins are kept floating.

The input terminals of the module are not operator

accessible.

A SELV reliability test is conducted on the system

where the module is used to ensure that under a

single fault, hazardous voltage does not appear at

the module’s output.

Do not ground one of the input pins without grounding

one of the output pins. This connection may allow a non-

SELV voltage to appear between the output pin and

ground.

DS_S48SA1R212_05122006

FEATURES DESCRIPTIONS

Vi(+)

Vo(+)

Over-Current Protection

Sense(+)

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 (hiccup mode).

ON/OFF

Sense(-)

Vi(-)

Vo(-)

The modules 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.

Figure 13: Remote on/off implementation

Remote Sense (Optional)

Over-Voltage Protection

Remote sense compensates for voltage drops on the

output by sensing the actual output voltage at the point of

load. The voltage between the remote sense pins and the

output terminals must not exceed the output voltage sense

range given here:

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 (Hiccup

mode). The modules will try to restart after shutdown. If

the fault condition still exists, the module will shut down

again. This restart trial will continue until the fault

condition is corrected.

[Vo(+) – Vo(–)] – [SENSE(+) – SENSE(–)] ≤ 10% × Vout

This limit includes any increase in voltage due to remote

sense compensation and output voltage set point

adjustment (trim).

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.

Vi(+) Vo(+)

Sense(+)

The module will try to restart after shutdown. If the over-

temperature condition still exists during restart, the

module will shut down again. This restart trial will

continue until the temperature is within specification.

Sense(-)

Vi(-) Vo(-)

Contact

Resistance

Contact and Distribution

Losses

Remote On/Off

Figure 14: Effective circuit configuration for remote sense

operation

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.

If the remote sense feature is not used to regulate the

output at the point of load, please connect SENSE(+) to

Vo(+) and SENSE(–) to Vo(–) at the module.

The output voltage can be increased by both the remote

sense and the trim; however, the maximum increase is the

larger of either the remote sense or the trim, not the sum of

both.

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 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.

When using remote sense and trim, the output voltage of

the module is usually increased, which increases the power

output of the module with the same output current.

Care should be taken to ensure that the maximum output

power does not exceed the maximum rated power.

DS_S48SA1R212_05122006

FEATURES DESCRIPTIONS (CON.)

percentage output voltage change △Vo% is defined as:

Output Voltage Adjustment (TRIM)

15.9(100 + ∆Vo%) −1089

Rtrim − up =

− 62

[

ΚΩ

]

∆Vo%

To increase or decrease the output voltage set point, the

modules may be connected with an external resistor

between the TRIM pin and either the Vo+ or Vo -. The

TRIM pin should be left open if this feature is not used.

Ex. When trim-up +10% (1.2V X 1.1 = 1.32V)

15.9(100 +10) −1089

Rtrim − up =

[

− 62 = 4 ΚΩ

]

Care should be taken to ensure that the maximum

output power of the module remains at or below the

maximum rated power.

Figure 15: Circuit configuration for trim-down (decrease output

voltage)

If the external resistor is connected between the TRIM

and Vo- pins, the output voltage set point decreases.

The external resistor value required to obtain a

percentage of output voltage change △Vo% is defined

as:

1089

Rtrim − down =

[

− 62 ΚΩ

]

∆Vo%

Ex. When trim-down –10% (1.2V X 0.9 = 1.08V)

1089

Rtrim − down =

[

− 62 = 46.9 ΚΩ

]

Figure 16: Circuit configuration for trim-up (increase output

voltage)

If the external resistor is connected between the TRIM

and Vo+ pins, the output voltage set point increases.

The external resistor value required to obtain a

DS_S48SA1R212_05122006

THERMAL CURVES

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.

Figure 18: Hot spot temperature measured point

＊The allowed maximum hot spot temperature is defined at 102℃

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 or a heat sink is

6.35mm (0.25”).

S48SA1R212(Standard) Output Current vs. Ambient Temperature and Air Velocity

@ Vin = 48V (Either Orienation)

Output Current(A)

600LFM

Thermal Derating

Heat can be removed by increasing airflow over the

module. Figure 19 shows maximum output is a function

of ambient temperature and airflow rate. 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.

500LFM

Natural

Convection

100LFM

400LFM

200LFM

300LFM

PWB

MODULE

FACING PWB

100

105

Ambient Temperature (℃)

Figure 19: Output current vs. ambient temperature and air velocity

@ V_in=48V

AIR VELOCITY

AND AMBIENT

TEMPERATURE

MEASURED BELOW

THE MODULE

50.8 (2.0”)

AIR FLOW

10 (0.4”)

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

Figure 17: Wind tunnel test setup

DS_S48SA1R212_05122006

PICK AND PLACE LOCATION

SURFACE-MOUNT TAPE & REEL

RECOMMENDED PAD LAYOUT (SMD)

DS_S48SA1R212_05122006

LEADED (Sn/Pb) PROCESS RECOMMEND TEMP. PROFILE

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

Over 200°C

40~50sec.

120

Time ( sec. )

180

240

300

Note: The temperature refers to the pin of S48SA, measured on the pin +Vout joint.

LEAD FREE (SAC) PROCESS RECOMMEND TEMP. PROFILE

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 S48SA, measured on the pin +Vout joint.

DS_S48SA1R212_05122006

MECHANICAL DRAWING

Surface-Mount Module

Through-Hole Module

Pin No.

Name

Function

+Vout

-Vout

Trim

ON/OFF

-Vin

Positive output voltage

Negative output voltage

Output voltage trim

ON/OFF logic

Negative input voltage

Positive input voltage

+Vin

Optional Pin Name

Function

+Sense (Option)

-Sense (Option)

Positive sense pin

Negative sense pin

No connection

DS_S48SA1R212_05122006

PART NUMBERING SYSTEM

1R2

Output

Voltage Current

Output ON/OFF

Logic

Option

Code

Form

Input

Number of

Outputs

S- Single

Product

Series

Pin Type

Factor Voltage

S- Small 48- 48V

Power

A- Advanced 1R2-1.2V

03- 3.0V

06- 6.6A

10- 10A

12- 12A

N- Negative R- SMD

P- Positive T-Through hole

A- 9 pins, no sense

B- 6 pins, no sense

C- 9 pins with sense

(12V has option B only)

F- RoHS 6/6

(Lead Free)

1R5-1.5V

1R8-1.8V

2R5-2.5V

3R3- 3.3V

050- 5.0V

120- 12V

* Option code A includes 9 pins. Pins 4, 5, and 9 have no connection.

Option code B excludes pin 4, 5, and 9 (total 6 pins).

Option code C features 9 pins with sense function.

MODEL LIST

MODEL NAME

INPUT

OUTPUT

EFF @ 100% LOAD

S48SA1R212NRFA

S48SA1R512NRFA

S48SA1R812NRFA

S48SA2R510NRFA

S48SA3R310NRFA

S48SA05006NRFA

S48SA12003NRFB

36V~75V

0.85A

1.3A

1.2V

1.5V

1.8V

2.5V

3.3V

5.0V

12V

12A

10A

6.6A

3.0A

84.0%

88.0%

88.5%

90.5%

90.0%

1.3A

CONTACT: www.delta.com.tw/dcdc

USA:

Asia & the rest of world:

Telephone: +886 3 4526107 ext 6220

Fax: +886 3 4513485

Europe:

Phone: +41 31 998 53 11

Fax: +41 31 998 53 53

Telephone:

East Coast: (888) 335 8201

West Coast: (888) 335 8208

Fax: (978) 656 3964

Email: DCDC@delta-corp.com

Email: DCDC@delta.com.tw

Email: DCDC@delta-es.com

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.

DS_S48SA1R212_05122006

S48SA05003PRFA [DELTA]

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