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

3

ISOLATED DC/DC CONVERTERS

48 Vdc Input

53 Vdc/8 A Output

Sep. 19, 2011

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

2. The efficiency is measured at Vin=48V, full load and Ta=25°C.

3.Test the temperature of baseplate.

4. All specifications are typical at nominal input, full load at 25°C unless noted.

Control Specifications

Parameter

Min

Typ

Max

Notes

Remote On/Off

Signal Low (Unit On)

-0.3 V

-

0.8 V

Signal High (Unit Off)

Active Low

2.4 V

-

18 V

The remote on/off pin open, Unit

off.

Signal Low (Unit Off)

-0.3 V

-

0.8 V

Signal High (Unit On)

Active High

2.4 V

-

18 V

The remote on/off pin open, Unit

on.

Current Sink

0 mA

-

2 mA

Output Trim Equations

Equations for calculating the trim resistor are shown below. The Trim Down resistor should be connected

between the Trim pin and Ground pin. The Trim Up resistor should be connected between the Trim pin and the

Vout. Only one of the resistors should be used for any given application.

Note:Vo_req=Desired (trimmed) output voltage[V]

Output voltage Vo=53.000 V

 







k

delta

Rtrimdown

2

100

Module

Vout

Trim

GND

Rtrimup

Module

Vout

Trim

GND

Rtrimdown





 

%

100

_







Vo

Vo

req

Vo

delta

 

















k

delta

delta

delta

Vo

delta

Rtrimup

)

2

100

(

225

.

1

)

100

(