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 Vdc Input 1.2 Vdc - 12 Vdc / 8.33 A - 30 A Output, 1/8 Brick

Converter

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

-

-

-

-

-

-

-

-

-

-

-

-

-

-

3.2 A

3.2 A

2.8 A

2.2 A

1.7 A

1.7 A

1.5 A

Input Current (no 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

-

-

-

-

-

-

-

65 mA

65 mA

60 mA

55 mA

50 mA

40 mA

35 mA

90 mA

90 mA

80 mA

75 mA

70 mA

60 mA

50 mA

Remote Off Input Current

6 mA

12 mA

Input Reflected Ripple Current (pk-pk)

-

12 mA

24 mA

Input Reflected Ripple Current (rms)

-

2 mA

4 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

-

0.01 A

0.02 A

Turn-on Voltage Threshold

32 V

34 V

35 V

Turn-off Voltage Threshold

30 V

32 V

33 V

Output Specifications

Parameter

Min

Typ

Max

Notes

Output Voltage Set Point

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

11.760 V

4.925 V

3.250 V

2.463 V

1.773 V

1.477 V

1.182 V

12.0 V

5.0 V

3.3 V

2.5 V

1.8 V

1.5 V

1.2 V

12.24 V

5.075 V

3.350 V

2.538 V

1.827 V

1.523 V

1.218 V

Vin=48 V, Io=50% full load,

Ta=25

C.

Line Regulation

-

-

2 mV

1 mV

5 mV

3 mV

Load Regulation

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

-

-

-

-

-

-

-

8 mV

8 mV

6 mV

4 mV

3 mV

3 mV

2 mV

16 mV

16 mV

12 mV

8 mV

6 mV

6 mV

4 mV