Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302

2

ISOLATED DC/DC CONVERTERS

48 Vdc Input

3.3 Vdc - 24 Vdc/7 A - 1.25 A Output

Nov. 29, 2010

Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.

Absolute Maximum Ratings

Parameter

Min

Typ

Max

Unit

Notes

Input Voltage (continuous)

-0.3

-

80

V

Remote On/Off

-0.3

-

12

V

Ambient Temperature

-40

-

85

C

Storage Temperature

-55

-

125

C

Note: Ratings used beyond the maximum ratings may cause a reliability degradation of the converter or may

permanently damage the device.

Input Specifications

Parameter

Min

Typ

Max

Unit

Notes

Input Voltage

36

-

75

V

Input Current (full load)

-

-

1.1

A

Input Current (no load)

-

25

40

mA

Remote Off Input Current

-

3

10

mA

Input Reflected Ripple Current

(rms)

-

10

20

mA

Input Reflected Ripple Current

(pk-pk)

-

40

60

mA

With simulated source impedance of

10 uH, 5 Hz to 20 MHz. And use a 100

uF/ 100 V electrolytic capacitor with

ESR=1 ohm max, at 200 kHz.

I

-

0.1

0.5

A

Turn-on Voltage Threshold

31

34

36

V

Turn-off Voltage Threshold

30

33

35

V

Note: All specifications are typical at 25

C unless otherwise stated.

Output Specifications

Parameter

Min

Typ

Max

Unit

Notes

Output Voltage Set Point

3.234

4.900

11.76

14.70

23.52

3.3

5.0

12.0

15.0

24.0

3.366

5.100

12.240

15.300

24.480

V

V

V

V

V

Line Regulation

-

-

-

-

-

±1

±2

±5

±8

±10

±3

±5

±10

±15

±20

mV

mV

mV

mV

mV

Load Regulation

-

-

-

-

-

±2

±4

±9

±10

±15

±5

±8

±18

±20

±30

mV

mV

mV

mV

mV