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

3

ISOLATED DC/DC CONVERTERS

48 Vdc Input

3.3 Vdc /30 A Output

Jan. 12, 2011

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

Output Specifications (continued)

Parameter

Min

Typ

Max

Unit

Notes

Transient Response

Overshoot

-

50

100

mV

of Max Load

Settling Time

-

150

250

uS

Overshoot

-

50

100

mV

of Max Load

Settling Time

-

150

250

uS

di/dt=0.1 A/us, Vin=48 Vdc, with a 1µF

ceramic capacitor and the minimum

external Tantalum cap at output.

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

General Specifications

Parameter

Min

Typ

Max

Unit

Notes

Efficiency

90

93

-

%

Measured at Vin=48 V, full load.

Switching Frequency

270

300

330

kHz

Isolation Capacitance

-

2200

-

pF

Output Voltage Trim Range

90

-

110

%

Remote Sense Compensation

-

-

10

%

Vin=48V, full load and short feedback

optocoupler.

Over Temperature Protection

-

125

-

C

Over Voltage Protection

3.8

-

4.5

%

Vin=48 V, full load, in hiccup Mode

MTBF

TBD

Hours

Calculated Per Bell Core SR-332

C)

Dimensions

Inches (L × W × H)

Millimeters (L × W × H)

2.30 x 0.90 x 0.37

58.42 x 22.78 x 9.50

-

Weight

-

28

-

g

Control Specifications

Parameter

Min

Typ

Max

Unit

Notes

Remote On/Off

Signal Low (Unit On)

-0.7

-

0.8

V

Signal High (Unit Off)

Active Low

2.4

-

18

V

When Remote On/Off pin is open,

unit is off.

Signal Low (Unit Off)

-0.7

-

0.8

V

Signal High (Unit On)

Active High

2.4

-

18

V

When Remote On/Off pin is open,

unit is on.

Current Sink

0

-

1

mA