Bel Fuse Inc.

206 Van Vorst Street, Jersey City, NJ 07302

• Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com

ISOLATED DC/DC CONVERTERS

48 V Input

1.2 V - 2.5 V/80 A, 3.3 V/70 A, 5 V/48 A, 12 V/20 A Output

Input Specifications

Parameter

Min

Typ

Max

Notes

Input Voltage

36 V

48 V

75 V

Input Current (full load)

Vo=12.0 V

Vo=5.0 V

Vo=3.3 V

Vo=2.5 V

Vo=1.8 V

Vo=1.5 V

Vo=1.2 V

-

-

-

-

-

-

-

-

-

-

-

-

-

-

7.5 A

7.5 A

7.3 A

6.4 A

4.7 A

4.0 A

3.3 A

Input Current (no load)

-

120 mA

180 mA

Remote Off Input Current

5 mA

10 mA

Input Reflected Ripple Current (pk-pk)

-

20 mA

40 mA

Input Reflected Ripple Current (rms)

-

5 mA

10 mA

Tested with simulated source impedance

of 10 uH, 5 Hz to 20 MHz; use a

100 uF/100 V electrolytic capacitor with

ESR = 1 ohm max. at 200 kHz at 25

°C.

I

-

0.05 A

Turn-on Voltage Threshold

32 V

34 V

35 V

Turn-off Voltage Threshold

30 V

32 V

34 V

Input Over Voltage

Lockout

76 V

78 V

80 V

Output Specifications

Parameter

Min

Typ

Max

Notes

Output Voltage Set Point

Vo=3.3 V

Vo=2.5 V

Vo=1.8 V

Vo=1.5 V

Vo=1.2 V

11.760 V

4.925 V

3.250 V

2.462 V

1.773 V

1.477 V

1.176 V

12.000 V

5.000 V

3.300 V

2.500 V

1.800 V

1.500 V

1.200 V

12.240 V

5.075 V

3.350 V

2.538 V

1.827 V

1.523 V

1.224 V

Vin=48 V, Io=50% full

load, Ta=25

°C.

Line Regulation

Vo=1.2 V - 2.5 V

-

-

-

-

±12 mV

±5 mV

±3 mV

±3 mV

±24 mV

±10 mV

±7 mV

±6 mV

Load Regulation

Vo=2.5 V

Vo=1.8 V

Vo=1.5 V

Vo=1.2 V

-

-

-

-

-

-

-

±30 mV

±10 mV

±7 mV

±6 mV

±5 mV

±4 mV

±3 mV

±60 mV

±20 mV

±15 mV

±13 mV

±9 mV

±8 mV

±6 mV

Regulation Over Temperature (-40

°C to +85 °C)

Vo=2.5 V

Vo=1.8 V

Vo=1.5 V

Vo=1.2 V

-

-

-

-

-

-

-

±60 mV

±45 mV

±30 mV

±25 mV

±20 mV

±20 mV

±15 mV

±100 mV

±75 mV

±50 mV

±45 mV

±40 mV

±35 mV

±30 mV