E48SC3R315NNA [DELTA]

Delphi Series E48SC, Eighth Brick Family DC/DC Power Modules: 48V in, 3.3V/15A out; 德尔福系列E48SC ，第八届砖系列DC / DC模块电源： 48V IN， 3.3V / 15A出


型号：	E48SC3R315NNA
厂家：	DELTA ELECTRONICS, INC.
描述：	Delphi Series E48SC, Eighth Brick Family DC/DC Power Modules: 48V in, 3.3V/15A out 德尔福系列E48SC ，第八届砖系列DC / DC模块电源： 48V IN， 3.3V / 15A出
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FEATURES

High efficiency: 91% @ 3.3V/15A

Size: 58.4mmx22.8mmx9.0mm

(2.30”x0.90”x0.35”)

Standard footprint

Industry standard pin out

Fixed frequency operation

Input UVLO, Output OCP, OVP, OTP

2250V isolation

Basic insulation

No minimum load required

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

OHSAS 18001 certified manufacturing

facility

UL/cUL 60950-1 (US & Canada)

Recognized, and TUV (EN60950-1)

Certified

Delphi Series E48SC, Eighth Brick Family

DC/DC Power Modules: 48V in, 3.3V/15A out

OPTIONS

Positive on/off logic

SMT or through-hole version

The Delphi Series E48SC, Eighth Brick, 48V input, single

output, isolated DC/DC converter is the latest offering from a world

leader in power systems technology and manufacturing -- Delta

Electronics, Inc. This product family provides up to 85 watts,

improved and very cost effective power solution of either 3.3V or 5V

in an industry standard footprint and pinout. With creative design

technology and optimization of component placement, these

converters possess outstanding electrical and thermal performances,

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.

APPLICATIONS

Telecom / Datacom

Wireless Networks

Optical Network Equipment

Server and Data Storage

Industrial / Testing Equipment

DATASHEET

DS_E48SC3R315_10092012

TECHNICAL SPECIFICATIONS

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

PARAMETER

NOTES and CONDITIONS

E48SC3R315 (Standard)

Min.

Typ.

Max.

Units

ABSOLUTE MAXIMUM RATINGS

Input Voltage

Continuous

100

102

125

2250

Vdc

°C

Transient

100ms

Operating Temperature

Refer to Figure 21 for measuring point

-40

-55

Storage Temperature

°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

100% Load, 36Vin

1.8

A²s

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

P-P thru 12µH inductor, 5Hz to 20MHz

120 Hz

Vin=48V, Io=Io.max, Tc=25°C

3.267

3.234

3.300

3.333

Vdc

Io=Io,min to Io,max

Vin= 36V to 75V

±3

±10

Over Line

Over Temperature

Tc= -40°C to 85°C

±15

Total Output Voltage Range

Output Voltage Ripple and Noise

Peak-to-Peak

Over sample load, line and temperature

5Hz to 20MHz bandwidth

3.366

Full Load, 1µF ceramic, 10µF tantalum

100

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 (within 1% Vout nominal)

Turn-On Transient

Output Voltage 10% Low

105

140

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

50% Io.max to 75% Io.max

µs

75% Io.max to 50% Io.max

200

Start-Up Time, From On/Off Control

Start-Up Time, From Input

Maximum Output Capacitance

EFFICIENCY

µF

Full load; 5% overshoot of Vout at startup

20000

2250

100% Load

60% Load

ISOLATION CHARACTERISTICS

Input to Output

Vdc

MΩ

Isolation Resistance

Isolation Capacitance

1000

325

FEATURE CHARACTERISTICS

Switching Frequency

kHz

ON/OFF Control, Negative Remote On/Off logic

Logic Low (Module On)

Von/off at Ion/off=1.0mA

Von/off at Ion/off=0.0 µA

0.7

Logic High (Module Off)

ON/OFF Control, Positive Remote On/Off logic

Logic Low (Module Off)

2.4

Von/off at Ion/off=1.0mA

Von/off at Ion/off=0.0 µA

Ion/off at Von/off=0.0V

Logic High, Von/off=15V

Pout ≦ max rated power

Over full temperature range

0.7

Logic High (Module On)

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

Leakage Current (for both remote on/off logic)

Output Voltage Trim Range

2.4

µA

-10%

3.795

10%

Output Voltage Remote Sense Range

Output Over-Voltage Protection

GENERAL SPECIFICATIONS

MTBF

4.3

4.95

Io=80% of Io, max; 300LFM @25C

Refer to Figure 21 for measuring point

M hours

grams

°C

Weight

19.6

116

Over-Temperature Shutdown

DS_E48SC3R315_10092012

ELECTRICAL CHARACTERISTICS CURVES

6.1

5.6

5.1

4.6

4.1

3.6

3.1

2.6

2.1

1.6

75Vin

48Vin

36Vin

48Vin

75Vin

4.5

7.5

10.5

13.5

4.5

7.5

10.5

13.5

output Current (A)

Output Current (A)

Figure 1: Efficiency vs. load current for 3A, nominal, and

Figure 2: Power dissipation vs. load current for 3A, nominal,

maximum input voltage at 25°C

and maximum input voltage at 25°C.

2.1

1.8

1.5

1.2

0.9

0.6

0.3

Input Voltage (V)

Figure 3: Typical full load input characteristics at room

temperature

DS_E48SC3R315_10092012

ELECTRICAL CHARACTERISTICS CURVES

For Negative Remote On/Off Logic

Figure 4: Turn-on transient at full rated load current (CC Mode

load ) (10 ms/div). Vin=48V.Top Trace: Vout, 2V/div; Bottom

Trace: ON/OFF input, 5V/div

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

Vin=48V.Top Trace: Vout, 2V/div; Bottom Trace: ON/OFF input,

5V/div

For Positive Remote On/Off Logic

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

load) (10 ms/div). Vin=48V.Top Trace: Vout, 2V/div; Bottom

Trace: ON/OFF input, 5V/div

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

Vin=48V.Top Trace: Vout, 2V/div, Bottom Trace: ON/OFF input,

5V/div

DS_E48SC3R315_10092012

ELECTRICAL CHARACTERISTICS CURVES

Figure 8: Output voltage response to step-change in load

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

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

Vout (100mV/div, 200us/div), Bottom Trace: I out (5A/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 9: Output voltage response to step-change in load

current (75%-50%-75% of Io, max; di/dt = 2.5A/µs). Load cap:

330µF, 35mΩ ESR solid electrolytic capacitor and 1µF ceramic

capacitor. Top Trace: Vout (100mV/div, 200us/div), Bottom

Trace: I out (5A/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: Test set-up diagram showing measurement points

for Input Terminal Ripple Current and Input Reflected Ripple

Current.

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 above

DS_E48SC3R315_10092012

ELECTRICAL CHARACTERISTICS CURVES

Figure 11: Input Terminal Ripple Current, i_c, at full rated output

current and nominal input voltage with 12µH source impedance

and 33µF electrolytic capacitor (500 mA/div, 2us/div)

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

source inductor at nominal input voltage and rated load current

(50 mA/div, 2us/div)

Copper Strip

Vo(+)

SCOPE

RESISTIVE

LOAD

10u

Vo(-)

Figure 13: Output voltage noise and ripple measurement test

setup

DS_E48SC3R315_10092012

ELECTRICAL CHARACTERISTICS CURVES

Output Current (A)

Figure 14: Output voltage ripple at nominal input voltage and

rated load current (Io=15A)(20 mV/div, 2us/div)

Figure 15: Output voltage vs. load current showing typical

current limit curves and converter shutdown points

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

DS_E48SC3R315_10092012

DESIGN CONSIDERATIONS

The input source must be insulated from the ac

mains by reinforced or double insulation.

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.

The input terminals of the module are not operator

accessible.

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.

Layout and EMC Considerations

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.

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.

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

when all inputs are ELV.

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

fuse with 10A 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.

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, CSA

C22.2 NO. 60950-1 2nd and IEC 60950-1 2nd : 2005 and

EN 60950-1 2nd: 2006+A11+A1: 2010, if the system in

which the power module is to be used must meet safety

agency requirements.

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.

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.

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:

DS_E48SC3R315_10092012

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 16: Remote on/off implementation

Remote Sense

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 over

voltage condition still exists, the module will shut down

again. This restart trial will continue until the over

voltage 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. The module will restart if the

temperature is within specification.

Vi(+) Vo(+)

Sense(+)

Remote On/Off

Sense(-)

Vi(-) Vo(-)

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.

Contact

Resistance

Contact and Distribution

Losses

Figure 17: Effective circuit configuration for remote sense

operation

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.

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.

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 to floating.

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.

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_E48SC3R315_10092012

FEATURES DESCRIPTIONS (CON.)

Output Voltage Adjustment (TRIM)

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

SENSE(+) or SENSE(-). The TRIM pin should be left

open if this feature is not used.

Figure 19: Circuit configuration for trim-up (increase output

voltage)

If the external resistor is connected between the TRIM

and SENSE (+) the output voltage set point increases

(Fig. 19). The external resistor value required to obtain

a percentage output voltage change △% is defined

as:

Figure 18: Circuit configuration for trim-down (decrease

output voltage)

5.11Vo (100 + ∆ ) 511

Rtrim − up =

−

− 10 .2

(

KΩ

)

If the external resistor is connected between the TRIM

and SENSE (-) pins, the output voltage set point

decreases (Fig. 18). The external resistor value

required to obtain a percentage of output voltage

change △% is defined as:

1.225 ∆

∆

Ex. When Trim-up +10%(3.3V×1.1=3.63V)

5.11× 3.3× (100 +10 ) 511

Rtrim − up =

−

−10.2 = 90.1

(

KΩ

)

1.225 ×10

511

Rtrim − down =

−10.2(KΩ)

∆

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.

Ex. When Trim-down -20%(3.3V×0.8=2.64V)

511

Rtrim − down =

−10.2 = 15.4 KΩ

( )

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 of the module remains at or below the

maximum rated power.

DS_E48SC3R315_10092012

THERMAL CONSIDERATIONS

Thermal Derating

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.

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.

Hence, the choice of equipment to characterize the

thermal performance of the power module is a wind

tunnel.

THERMAL CURVES

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’’).

Figure 21: Hot spot temperature measured point.

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

E48SC3R315 (standard) Output Current vs. Ambient Temperature and Air Velocity

Ou tpu t Cu rr en t (A)

@V in = 4 8V ( Tr a ns ve r s e Ori en t at io n )

1 5

PWB

MODULE

FACING PWB

Natural

Convection

1 2

100LFM

200LFM

300LFM

400LFM

500LFM

AIR VELOCITY

AND AMBIENT

TEMPERATURE

600LFM

MEASURED BELOW

THE MODULE

50.8 (2.0”)

12.7 (0.5”)

AIR FLOW

3 5

4 5

5 0

6 0

7 5

)

Am bie nt Te mp er atu re

(

℃

Figure 22: Output current vs. ambient temperature and air velocity

@ V_in=48V(Transverse Orientation)

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

Figure 20: Wind tunnel test setup

DS_E48SC3R315_10092012

PICK AND PLACE LOCATION

SURFACE-MOUNT TAPE & REEL

RECOMMENDED PAD LAYOUT (SMD)

DS_E48SC3R315_10092012

LEADED (Sn/Pb) PROCESS RECOMMEND TEMPERATURE 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 E48SR, measured on the pin +Vout joint.

LEAD FREE (SAC) PROCESS RECOMMEND TEMPERATURE 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 E48SR, measured on the pin +Vout joint.

DS_E48SC3R315_10092012

MECHANICAL DRAWING

Surface-mount module

Through-hole module

Pin No.

Name

Function

+Vin

Positive input voltage

ON/OFF

-Vin

Remote ON/OFF

Negative input voltage

Negative output voltage

Negative remote sense

Output voltage trim

-Vout

-SENSE

TRIM

+SENSE

+Vout

Positive remote sense

Positive output voltage

DS_E48SC3R315_10092012

PART NUMBERING SYSTEM

3R3

Type of

Product Voltage Outputs

Input Number of

Product

Series

Output

Voltage Current

Output

ON/OFF

Logic

Length/Type

Option Code

E- Eighth

Brick

48 -

S- Single

C- Improved

3R3 - 3.3V 15 -15A

N - Negative

P - Positive

R - 0.170

N - 0.145”

M - SMD pin

A- Standard

Functions

F- RoHS 6/6

(Lead Free)

Space -

36~75V

E48SR series

RoHS 5/6

MODEL LIST

MODEL NAME

E48SC3R315NN A

E48SC3R315NMFA

E48SC3R315NNFA

INPUT

OUTPUT

EFF @ 100% LOAD

36V~75V

1.8A

3.3V

15A

91.0%

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.

CONTACT: www.delta.com.tw/dcdc

USA:

Telephone:

Europe:

Asia & the rest of world:

Telephone: +886 3 4526107

Ext.6220~6224

Telephone: +41 31 998 53 11

Fax: +41 31 998 53 53

Email: DCDC@delta-es.tw

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.

DS_E48SC3R315_10092012

E48SC3R315NNA [DELTA]

相关型号：

E48SC3R315NNFA

E48SC3R315NRA

E48SC3R315NRFA

E48SC3R315PMFA

E48SC3R315PNFA

E48SC3R315PRFA

E48SC3R320NMFA

E48SC3R320NNFA

E48SC3R320NRFA

E48SC3R320PMFA

E48SC3R320PNFA

E48SC3R320PRFA