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 - 3.3 Vdc/15 A, 5 Vdc/12 A, 12 Vdc/5 A Output, 1/8 Brick

Nov. 22, 2010

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

Output Specifications (continued)

Parameter

Min

Typ

Max

Unit

Notes

Ripple and Noise (rms)

Vo=3.3 V

Vo=1.5 V

Vo=1.2 V

-

-

-

-

-

-

-

25

25

15

12

10

10

10

50

50

30

25

20

20

20

mV

mV

mV

mV

mV

mV

mV

Ripple and Noise (pk-pk)

Vo=3.3 V

Vo=1.5 V

Vo=1.2 V

-

-

-

-

-

-

-

100

95

55

55

45

45

45

130

120

80

80

70

70

70

mV

mV

mV

mV

mV

mV

mV

Test conditions: Vin=48 V, Ta=25

C, with a 1uF ceramic capacitor

and a 10 uF Tantalum capacitor at

the output.

Turn on Time

-

15

30

mS

Overshoot at Turn on

-

0

5

%

Output Capacitance

Vo=3.3 V

Vo=1.5 V

Vo=1.2 V

0

0

0

0

0

0

0

-

-

-

-

-

-

-

1000

10000

15000

15000

15000

15000

15000

uF

Transient Response

Overshoot

-

300

400

mV

25% ~ 50%

Max Load

Settling Time

-

400

500

uS

Overshoot

-

300

400

mV

50% ~ 25%

Max Load

Settling Time

12.0 V

-

400

500

uS

Overshoot

-

200

230

mV

25% ~ 50%

Max Load

Settling Time

-

300

400

uS

Overshoot

-

200

230

mV

50% ~ 25%

Max Load

Settling Time

5.0 V

-

300

400

uS

Overshoot

-

150

200

mV

25% ~ 50%

Max Load

Settling Time

-

200

250

uS

Overshoot

-

150

200

mV

50% ~ 25%

Max Load

Settling Time

1.2 V

- 3.3 V

-

200

250

uS

Test conditions:

di/dt = 0.1 A/uS, Vin=48 V, with a 1

uF ceramic capacitor and a 10 uF

Tantalum capacitor at the output.

Note: All specifications are typical at nominal input, full load at 25°C unless otherwise stated.