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

48V Input 3.3V/60A, 5V/40A, 12V/17A Output

General Specifications

Parameter

Min

Typ

Max

Notes

Efficiency

90%

90%

89%

93%

93%

92%

-

-

-

Vin=48V, full load , Ta=25

°C

Switching Frequency

280KHz

315KHz

350KHz

Isolation capacitance

-

1500pF

-

Output Voltage Trim Range

80%Vo

-

110%Vo

Over Temperature Protection

-

125

°C

-

Over Voltage Protection

117%Vo

122%Vo

127%Vo

MTBF

TBD

°C)

Dimensions

Inches

millimeters

2.28 x 2.4 x 0.42

57.51 x 60.98 x 10.67

Weight

-

76g

-

Control Specifications

Parameter

Min

Typ

Max

Notes

Remote On/Off

Signal Low (Unit On)

-0.3V

-

0.8V

Signal High (Unit Off)

Active Low

2.4V

-

18V

07HB-D0TxxL. The remote

on/off pin open, Unit on.

Signal Low (Unit Off)

-0.3V

-

0.8V

Signal High (Unit On)

Active High

2.4V

-

18V

07HB-D0Txx0. The remote

on/off pin open, Unit on.

Current Sink

0mA

-

0.75mA

Output Trim Equations

Equations for calculating the trim resistor (in kΩ) 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.

Notes:

Vo_req=Desired(trimmed) output voltage[V]

Output voltage Vo=3.308V for 3.3V output; Vo=5.000V for 5.0V; Vo=12.000V for 12V output

[]

Ω

−

⋅

−

⋅

+

=

k

delta

Vo

delta

Rtrimup

2

225

.

1

5

.

122

)

100

(

[]

Ω

−

=

k

delta

Rtrimdown

2

100

()

[]

%

100

_

×

−

=

Vo

Vo

req

Vo

delta

Module

Vout

Trim

GND

Rtrimdown

Module

Vout

Trim

GND

Rtrimup