Delta Electronics E48SR2R520NRFA, E48SR1R225NRFA, E48SR3R320NRFA, E48SR05012NRFA, E48SR12005NRFA Datasheet

FEATURES

 High Efficiency: 91.5% @ 15V/4A

 Size: 58.4mmx22.8mmx8.4mm

(2.30”x0.90”x0.33”)

 Standard footprint

 Industry standard pin out

 Fixed frequency operation: 350KHz

 Input UVLO, Output OCP, OVP, OTP

 Basic insulation

 No minimum load required

 2:1 Input voltage range

 ISO 9001, TL 9000, ISO 14001, QS9000,

OHSAS18001 certified manufacturing

facility

 UL/cUL 60950-1 (US & Canada)

recognized, and TUV (EN60950-1)

certified

 CE mark meets 73/23/EEC and

93/68/EEC directive

Delphi Series E48SR, 66W Eighth Brick Family
DC/DC Power Modules: 48V in, 15V/4A out

The Delphi Series E48SR 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 66 watts of power or 25A of output current

(1.8V and below) in an industry standard footprint. 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.

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

and temperature conditions. The Delphi Series converters meet all safety

requirements with basic insulation.

All

OPTIONS

 Positive On/Off logic

 Short pin lengths

 SMD pin

APPLICATIONS

 Telecom/Datacom

 Wireless Networks

 Optical Network Equipment
 Server and Data Storage

 Industrial/Testing Equipment

DATASHEET
DS_E48SR15004_05222008

TECHNICAL SPECIFICATIONS

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

PARAMETER NOTES and CONDITIONS E48SR15004 (Standard)

ABSOLUTE MAXIMUM RATINGS

Input Voltage

Continuous 80 Vdc

Transient (100ms) 100ms 100 Vdc
Operating Case Temperature Please refer to Fig. 21 for the measuring point -40 106 °C
Storage Temperature -55 125 °C
Input/Output Isolation Voltage 2250 Vdc

INPUT CHARACTERISTICS

Operating Input Voltage 36 75 Vdc
Input Under-Voltage Lockout

Turn-On Voltage Threshold 33 34 35 Vdc

Turn-Off Voltage Threshold 31 32 33 Vdc

Lockout Hysteresis Voltage 1 2 3 Vdc

Maximum Input Current 100% Load, 36Vin 2.2 A
No-Load Input Current 60 100 mA
Off Converter Input Current 4 10 mA
Inrush Current(I2t) 1 A2s
Input Reflected-Ripple Current P-P thru 12µH inductor, 5Hz to 20MHz 25 mA
Input Voltage Ripple Rejection 120 Hz dB

OUTPUT CHARACTERISTICS

Output Voltage Set Point Vin=48V, Io=Io.max, Tc=25°C 14.850 15.000 15.150 Vdc
Output Voltage Regulation

Over Load Io=Io,min to Io,max ±5 ±15 mV

Over Line Vin=36V to 75V ±5 ±15 mV

Over Temperature Tc=-40°C to 85°C ±100 mV

Total Output Voltage Range over sample load, line and temperature V
Output Voltage Ripple and Noise 5Hz to 20MHz bandwidth

Peak-to-Peak Full Load, 1µF ceramic, 10µF tantalum 80 120 mV

RMS Full Load, 1µF ceramic, 10µF tantalum 25 40 mV

Operating Output Current Range 0 4 A
Output DC Current-Limit Inception Output Voltage 10% Low 110 140 %

DYNAMIC CHARACTERISTICS

Output Voltage Current Transient 48V, 10µF Tan & 1µF Ceramic load cap, 0.1A/µs

Positive Step Change in Output Current 50% Io.max to 75% Io.max 150 320 mV

Negative Step Change in Output Current 75% Io.max to 50% Io.max 150 320 mV

Settling Time (within 1% Vout nominal) 200 us

Turn-On Transient

Start-Up Time, From On/Off Control 6 12 ms

Start-Up Time, From Input 6 12 ms

Maximum Output Capacitance Full load; 5% overshoot of Vout at startup 1000 µF

EFFICIENCY

100% Load 91.5 %
60% Load 90.5 %

ISOLATION CHARACTERISTIC S

Input to Output 2250 Vdc
Isolation Resistance 10 MΩ
Isolation Capacitance 1500 pF

FEATURE CHARACTERISTICS

Switching Frequency 350 kHz
ON/OFF Control, Negative Remote On/Off logic

Logic Low (Module On) Von/off at Ion/off=1.0mA 0 0.7 V

Logic High (Module Off) Von/off at Ion/off=0.0 µA 2 18 V

ON/OFF Control, Positive Remote On/Off logic

Logic Low (Module Off) Von/off at Ion/off=1.0mA 0 0.7 V

Logic High (Module On) Von/off at Ion/off=0.0 µA 2 18 V

ON/OFF Current (for both remote on/off logic) Ion/off at Von/off=0.0V 1 mA

Leakage Current (for both remote on/off logic) Logic High, Von/off=15V 50 uA

Output Voltage Trim Range
Output Voltage Remote Sense Range
Output Over-Voltage Protection Over full temp range; % of nominal Vout 17.25 21.75 V

GENERAL SPECIFICATIONS

MTBF Io=80% of Io, max; Ta=25°C 2.11 M hours
Weight 19.6 grams
Over-Temperature Shutdown Refer to Fig. 21 for the measuring point 114 °C

.

Min. Typ. Max. Units

Across Pins 9 & 5, Pout ≦ max rated power

Pout ≦ max rated power

13.05 16.95 V
10 %

DS_E48SR15004_05222008

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ELECTRICAL CHARACTERISTICS CURVES

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

maximum input voltage at 25°C

Figure 3: Typical full load input characteristics at room

temperature

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

nominal, and maximum input voltage at 25°C.

DS_E48SR15004_05222008

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ELECTRICAL CHARACTERISTICS CURVES

For Negative Remote On/Off Logic

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

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

Trace: ON/OFF input, 5V/div

For Positive Remote On/Off Logic

Figure 5: Turn-on transient at zero load current (2ms/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 (resistor

load) (2ms/div). Vin=48V.Top Trace: Vout, 5V/div; Bottom
Trace: ON/OFF inpu, 5V/div

DS_E48SR15004_05222008

Figure 7: Turn-on transient at zero load current (2ms/div).

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

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ELECTRICAL CHARACTERISTICS CURVES

A

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 (0.2V/div,200us/div), Bottom Trace: Iout (1
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

/div). Scope

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

current (75%-50%-75% of Io, max; di/dt = 2.5A/µs). Load cap:
47µF, 35m
capacitor. Top Trace: Vout (0.2V/div,,200us/div), Bottom Trace:
Iout (1A/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

Ω

ESR solid electrolytic capacitor and 1µF ceramic

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
possible battery impedance. Measure current as shown above

) of 12 μH. Capacitor Cs offset

TEST

DS_E48SR15004_05222008

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