DS_E48SC12025_05162016

E-mail: dcdc@deltaww.com

http://www.deltaww.com/dcdc

P2

TECHNICAL SPECIFICATIONS

PARAMETER

NOTES and CONDITIONS

E48SC12025

Min.

Typ.

Max.

Units

ABSOLUTE MAXIMUM RATINGS

Input Voltage

Continuous

0

75

Vdc

Transient (100ms)

100ms

100

Vdc

Output negative voltage

0.3

V

Operating ambient Temperature

-40

85

°C

Storage Temperature

-55

125

°C

Input/Output Isolation Voltage

1500

Vdc

INPUT CHARACTERISTICS

Operating Input Voltage

36

48

75

Vdc

Input Under-Voltage Lockout

Turn-On Voltage Threshold

(Adjustable via PMBus, VIN_ON)

34

36

Vdc

Turn-Off Voltage Threshold

(Adjustable via PMBus, VIN_OFF)

31

34

Vdc

Lockout Hysteresis Voltage

2

Vdc

Maximum Input Current

25A Load, 36Vin

10

A

No-Load Input Current

Vin=48V

60

120

mA

Off Converter Input Current

Vin=48V

10

30

mA

Input Capacitance

100

uF

Inrush Current (I

1

A2S

Input Reflected-Ripple Current

P-P thru 12µH inductor, 5Hz to 20MHz

25

mA

Input Voltage Ripple Rejection

120Hz

50

dB

OUTPUT CHARACTERISTICS

Output Voltage Set Point

(Adjustable via PMBus)

Vin=48V, Io=0A , Ta=25°C

11.88

12

12.12

Vdc

Output Voltage Regulation

Over Line

Vin=36V to 75V, Io=100% load

±48

mV

Over Load

Vin=36V to 75V,

Io=Io,min to Io,max

±48

mV

Over tempearture

Vin=36V to 75V, Io=100% load, Ta= -40C to 85C

±108

mV

Total output voltage Range

Trim and PMBUS,Vin=36V to 75V, Pout ≦ max rated power,

Io ≦ Io.max

8.00

13.20

Vdc

Output Over-Voltage Lockout

(Adjustable via PMBus, VOUT_OV_FAULT_LIMIT)

15.2

Vdc

Output Capacitance

0

10000

µF

Output Voltage Ripple and Noise

Vin=48V, Full load, 20MHz bandwidth

Peak-to-Peak

Co= 220uF/16V (polymer ) + 10u/16V (Tantalum Capacitor)

+1u/16V (Ceramic )

90

mV

RMS

Co= 220uF/16V (polymer ) + 10u/16V (Tantalum Capacitor)

+1u/16V (Ceramic )

40

mV

Operating Output Current Range

Vin=36V to 75V

0

25

A

Output Over Current Protection(hiccup mode)

Output Voltage 10% Low

27.5

32

35

A

DYNAMIC CHARACTERISTICS

Output Voltage Current Transient

Vin=48V, Load Slew rate 0.1A/µs with a 1uF ceramic ,

a 10uF tantalum, and a 220uF polymer capacitor

Positive Step Change in Output Current

50% Io.max to 75% Io.max

300

mV

Negative Step Change in Output Current

75% Io.max to 50% Io.max

-300

mV

Settling Time (within 1% Vout nominal)

500

µs

Turn-On Transient

(Adjustable via PMBus)

Start-Up Time, From On/Off Control

From On/off to 90%Vo final value

40

ms

Start-Up Time, From Input

From Input to 90%Vo final value

55

ms

Output voltage Rise Time

From 10%Vo final value to 90%Vo final value

20

ms

EFFICIENCY

100% Load

Vin=36V

95.0

%

100% Load

Vin=48V

95.0

%

60% Load

Vin=48V

95.7

%

ISOLATION CHARACTERISTICS

Input

to Output

1500

Vdc

Isolation Resistance

10

MΩ

Isolation Capacitance

6900

pF

FEATURE CHARACTERISTICS

Switching Frequency

168

175

182

KHz

ON/OFF Control, Negative Remote On/Off logic

Logic Low (Module On)

Von/off at Ion/off=1.0mA

0

0.8

V

Logic High (Module Off)

Von/off at Ion/off=0.0 µA

4.0

9

V

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

Ion/off at Von/off=0.0V

0.5

mA

GENERAL SPECIFICATIONS

MTBF

Io=80% of Io max; Ta=25°C; Airflow=300LFM

2.3

M

hours

Weight

Without heat-spreader

32.6

grams

Weight

With heat-spreader

40.4

grams

Over-Temperature Shutdown ( Without heat spreader)

Refer to Figure 20 for Hot spot 1 location

(48Vin,80% Io, 200LFM,Airflow from Vin- to Vin+)

127

°C

Over-Temperature Shutdown

(With heat spreader)

Refer to Figure 22 for Hot spot 2 location

(48Vin,80% Io, 200LFM,Airflow from Vin- to Vin+)

112

°C

Over-Temperature Shutdown

( NTC resistor )

Refer to Figure 20 for NTC resistor location

125

°C

Note: Please attach thermocouple on NTC resistor to test OTP function, the hot spots’ temperature is just for reference. And the OTP is Adjustable via PMBus.