E48SH1R250NRFA [FTDI]

Delphi Series E48SH, 120W Eighth Brick Family DC/DC Power Modules; 德尔福系列E48SH ， 120W 1/8砖系列DC / DC电源模块


型号：	E48SH1R250NRFA
厂家：	FUTURE TECHNOLOGY DEVICES INTERNATIONAL LTD.
描述：	Delphi Series E48SH, 120W Eighth Brick Family DC/DC Power Modules 德尔福系列E48SH ， 120W 1/8砖系列DC / DC电源模块电源电路
文件：	总15页 (文件大小：563K)
中文：	中文翻译
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FEATURES

High efficiency: 92.0% @3.3V/30A

Size: 58.4mm x 22.8mm x9.5mm

(2.30”x0.90”x0.37”)

Industry standard pin out

Fixed frequency operation

Input UVLO, Output OTP, OCP, OVP

Monotonic startup into normal and

pre-biased loads

Secondary control, very fast transient

response

2250V Isolation and basic insulation

No minimum load required

No negative current during power or enable

on/off

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

OHSAS 18001 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 E48SH, 120W Eighth Brick Family

DC/DC Power Modules: 48V in, 3.3V/30A out

The Delphi Series E48SH Eighth Brick, 48V input, single output, isolated

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

systems technology and manufacturing ― Delta Electronics, Inc. This

product family is available in either a through-hole or surface-mounted

package and provides up to 120 watts of power or 50A of output current

(1.2V and below) in an industry standard footprint and pinout. The E48SH

converter operates from an input voltage of 36V to 75V and is available in

output voltages from 1.0V to 15V. Efficiency is up to 92.0% for 3.3V

output at 30A 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.

OPTIONS

Positive On/Off logic

Short pin lengths available

External Synchronization

Output OVP latch mode

Output OCP latch mode

Heat spreader

APPLICATIONS

Telecom/DataCom

Wireless Networks

Optical Network Equipment

Server and Data Storage

Industrial/Test Equipment

DATASHEET

DS_E48SH3R330_05142009

TECHNICAL SPECIFICATIONS

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

PARAMETER

NOTES and CONDITIONS

E48SH3R330 (Standard)

Min.

Typ.

Max.

Units

ABSOLUTE MAXIMUM RATINGS

Input Voltage

Continuous

Transient (100ms)

Operating Temperature

Storage Temperature

Input/Output Isolation Voltage

INPUT CHARACTERISTICS

Operating Input Voltage

100

129

125

2250

Vdc

°C

Vdc

100ms

Refer to Figure 21 for measuring point

-40

-55

Vdc

Input Under-Voltage Lockout

Turn-On Voltage Threshold

Turn-Off Voltage Threshold

Lockout Hysteresis Voltage

Maximum Input Current

3.6

120

Vdc

A²s

100% Load, 36Vin

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

Over Line

Over Temperature

Total Output Voltage Range

Output Voltage Ripple and Noise

Peak-to-Peak

P-P thru 12µH inductor, 5Hz to 20MHz

120 Hz

Vin=48V, Io=Io.max, Tc=25°C

3.257

3.24

3.300

3.333

Vdc

Io=Io,min to Io,max

Vin=36V to 75V

Tc=-40°C to 115°C

±3

±15

±10

over sample load, line and temperature

5Hz to 20MHz bandwidth

Full Load, 1µF ceramic, 10µF tantalum

3.35

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

110

Output Voltage 10% Low

140

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

50% Io.max to 75% Io.max

100

75% Io.max to 50% Io.max

Start-Up Time, From On/Off Control

Start-Up Time, From Input

Maximum Output Capacitance

EFFICIENCY

µF

Full load; no overshoot of Vout at startup

10000

100% Load

60% Load

92.5

ISOLATION CHARACTERISTICS

Input to Output

Isolation Resistance

Isolation Capacitance

FEATURE CHARACTERISTICS

Switching Frequency

2250

Vdc

MΩ

1500

240

kHz

ON/OFF Control, Negative Remote On/Off logic

Logic Low (Module On)

Logic High (Module Off)

ON/OFF Control, Positive Remote On/Off logic

Logic Low (Module Off)

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

Von/off at Ion/off=1.0mA

Von/off at Ion/off=0.0 µA

1.2

Von/off at Ion/off=1.0mA

Von/off at Ion/off=0.0 µA

Ion/off at Von/off=0.0V

1.2

Logic High, Von/off=15V

Across Pins 9 & 5, Pout ≦ max rated power

-20

Pout ≦ max rated power

Over full temp range; % of nominal Vout

Output Voltage Remote Sense Range

Output Over-Voltage Protection

GENERAL SPECIFICATIONS

CMTBF

130

118

Io=80% of Io, max; Ta=25℃, airflow rate=300FLM

4.1

135

M hours

grams

°C

Weight

Over-Temperature Shutdown

Refer to Figure 21 for measuring point

E48SH3R330_05142009

ELECTRICAL CHARACTERISTICS CURVES

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

maximum input voltage at 25°C

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

nominal, and maximum input voltage at 25°C.

3.5

2.5

1.5

0.5

INPUT VOLTAGE(V)

Figure 3: Typical full load input characteristics at room

temperature

E48SH3R330_05142009

ELECTRICAL CHARACTERISTICS CURVES

For Negative Remote On/Off Logic

Figure 4: Turn-on transient at zero load current (5 ms/div).

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

2V/div

Figure 5: Turn-on transient at full rated load current (constant

current load) (5 ms/div). Vin=48V.Top Trace: Vout, 2V/div;

Bottom Trace: ON/OFF input, 2V/div

For Input Voltage Start up

Figure 6: Turn-on transient at zero load current (5 ms/div).

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

50V/div

Figure 7: Turn-on transient at full rated load current (constant

current load) (5 ms/div). Vin=48V.Top Trace: Vout, 2V/div;

Bottom Trace: input voltage, 50V/div

E48SH3R330_05142009

ELECTRICAL CHARACTERISTICS CURVES

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

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

tantalum capacitor and 1µF ceramic capacitor. Trace: Vout

(50mV/div, 100us/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 (50%-75% of Io, max; di/dt = 0.1A/µs). Load cap: 10µF,

tantalum capacitor and 1µF ceramic capacitor. Trace: Vout

(50mV/div, 100us/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.

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 (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 above

E48SH3R330_05142009

ELECTRICAL CHARACTERISTICS CURVES

Copper Strip

Vo(+)

Vo(-)

SCOPE

RESISTIVE

LOAD

10u

Figure 12: 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 13: Output voltage noise and ripple measurement test

setup

Figure 14: Output voltage ripple at nominal input voltage and

rated load current (Io=30A)(50 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.

E48SH3R330_05142009

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 10μF to 100μF 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.

If the metal baseplate is grounded, one Vi pin and

one Vo pin shall also be grounded.

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

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.

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.

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

when all inputs are ELV.

Safety 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 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.

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,

CAN/CSA-C22.2 No. 60950-00 and EN60950: 2000 and

IEC60950-1999, 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.

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.

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:

E48SH3R330_05142009

FEATURES DESCRIPTIONS

Vi(+)

Vo(+)

Over-Current Protection

Sense(+)

The E48SH modules include an internal output

over-current protection circuit, which will endure current

limiting for an unlimited duration during output overload.

When the output current exceeds the OCP set point, the

current limit function will work by initially reduce duty

cycle of the module, the unit will go out of regulation but

remains in safe operating area before the output drops

below 50%. When output drops below 50%, the

modules will automatically shut down and enter hiccup

mode.

ON/OFF

Sense(-)

Vi(-)

Vo(-)

Figure 16: Remote on/off implementation

Remote Sense

During hiccup, 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.

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:

Over-Voltage Protection

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

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 restart after

200mS. latch off mode is optional. Under latch off mode

the over-voltage latch is reset by either cycling the input

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

This limit includes any increase in voltage due to

remote sense compensation and output voltage set

point adjustment (trim).

Vi(+) Vo(+)

Sense(+)

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.

Sense(-)

Vi(-) Vo(-)

Contact

Resistance

Contact and Distribution

Losses

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.

Figure 17: Effective circuit configuration for remote sense

operation

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.

Remote On/Off

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.

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.

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.

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.

Care should be taken to ensure that the maximum

output power does not exceed the maximum rated

power.

E48SH3R330_05142009

FEATURES DESCRIPTIONS (CON.)

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:

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.

5.11Vo (100 + Δ ) 511

Rtrim − up =

−

− 10.2

(

KΩ

)

1.225 Δ

Ex. When Trim-up +10%(3V×1.1=3.3V)

5.11× 3.3× (100 +10 ) 511

Rtrim − up =

−

−10.2 = 90.1 KΩ

(

)

1.225×10

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.

Figure 18: Circuit configuration for trim-down (decrease

output voltage)

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.

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:

Care should be taken to ensure that the maximum

output power of the module remains at or below the

maximum rated power.

511

Rtrim − down =

−10.2

(

KΩ

)

Frequency Synchronization

Ex. When Trim-down -10%(3.3V×0.9=2.97V)

This product family can be synchronized with external clock

signal to the TRIM pin. This reduces system noise and

interference in multiple converter systems.

511

Rtrim − down =

− 10.2 = 40.9

(

KΩ

)

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

voltage)

E48SH3R330_05142009

Thermal Derating

THERMAL CONSIDERATIONS

Heat can be removed by increasing airflow over the

module. The hottest point temperature of the module is

129℃. 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.

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 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: Case temperature measurement location.

Pin locations are for reference only.

＊

The allowed maximum hot spot temperature is defined at

129℃

E48SH3R330(Standard) Output Current vs. Ambient Temperature and Air Velocity

Output Current(A)

@Vin = 48V (Transverse Orientation)

PWB

MODULE

FACING PWB

Natural

Convection

100LFM

200LFM

300LFM

AIR VELOCITY

400LFM

AND AMBIENT

TEMPERATURE

MEASURED BELOW

THE MODULE

50.8 (2.0”)

AIR FLOW

Ambient Temperature (℃)

12.7 (0.5”)

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

E48SH3R330_05142009

PICK AND PLACE LOCATION

SURFACE-MOUNT TAPE & REEL

RECOMMENDED PAD LAYOUT (SMD)

E48SH3R330_05142009

LEADED (Sn/Pb) PROCESS RECOMMENDED 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 E48SH, measured on the pin +Vout joint.

LEAD FREE (SAC) PROCESS RECOMMENDED 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 E48SH, measured on the pin +Vout joint.

* 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.

E48SH3R330_05142009

MECHANICAL DRAWING

SURFACE-MOUNT MODULE

THROUGH-HOLE MODULE

Pin No.

Name

Function

+Vin

ON/OFF

-Vin

-Vout

-SENSE

TRIM

Positive input voltage

Remote ON/OFF

Negative input voltage

Negative output voltage

Negative remote sense

Output voltage trim

+SENSE

+Vout

Positive remote sense

Positive output voltage

E48SH3R330_05142009

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

E48SH3R330_05142009

PART NUMBERING SYSTEM

3R3

Type of

Product

Input

Voltage

Number of Product

Outputs Series

Output

Voltage

Output

Current

30 - 30A

ON/OFF

Logic

N- Negative

Pin Length

Option Code

E- Eighth 48-36V~75V S- Single H-50A series 3R3 - 3.3V

Brick

R- 0.170”

N- 0.145”

K- 0.110”

M- SMD

A- Standard functions

H - With heatspreader

F- RoHS 6/6

(Lead Free)

P- Positive

MODEL LIST

MODEL NAME

E48SH1R250NRFA

E48SH1R540NRFA

E48SH1R840NRFA

E48SH2R535NRFA

E48SH3R330NRFA

E48SH05020NRFA

E48SH12010NRFA

INPUT

OUTPUT

EFF @ 100% LOAD

36V~75V

2.3A

2.2A

2.7A

2.9A

3.6A

3.7A

4.3A

1.2V

1.5V

1.8V

2.5V

3.3V

5.0V

12V

50A

40A

35A

30A

20A

10A

86.5%

89%

90%

89.5%

92%

90%

93.5%

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.

CONTACT: www.delta.com.tw/dcdc

USA:

Telephone:

East Coast: (888) 335 8201

West Coast: (888) 335 8208

Fax: (978) 656 3964

Email: DCDC@delta-corp.com

Europe:

Asia & the rest of world:

Telephone: +886 3 4526107 x 6220

Fax: +886 3 4513485

Telephone: +41 31 998 53 11

Fax: +41 31 998 53 53

Email: DCDC@delta-es.tw

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.

E48SH3R330_05142009

E48SH1R250NRFA [FTDI]

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