Bel Fuse Inc.

206 Van Vorst Street, Jersey City, NJ 07302

• Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com

NON-ISOLATED DC/DC CONVERTERS

5.4 Vdc - 13.2 Vdc Input

1.0 Vdc - 5.0 Vdc Output / 20 A

General Specifications

Parameter

Min

Typ

Max

Notes

Efficiency

91%

89%

88%

85%

84%

82%

81%

94%

92%

91%

88%

87%

85%

84%

-

-

-

-

-

-

-

Measured at Vin=8 V at full load.

Switching Frequency

480 kHz

600 kHz

720 kHz

Over Voltage Protection (Latch)

108.5%

115%

120%

Can be reset by cycling the input supply

voltage or remote on/off.

Output Trim Range

-

Remote Sense Compensation

-

10%

MTBF

3,154,461 hours

°C)

Dimensions

Inches (L × W × H)

Millimeters (L × W × H)

1.22 x 0.827 x 0.345

30.99 x 21.0 x 8.76

Weight

-

11 g

-

Note

Control Specifications

Parameter

Min

Typ

Max

Notes

Remote On/Off

Signal Low (Unit Off)

0 V

-

1 V

Signal High (Unit On)

2.5 V

-

13.2 V

Remote on/off pin open, unit on.

Output Trim Equations

Equations for calculating the trim resistor (in kΩ) given the desired adjusted voltage (Vadj) and the nominal

output voltage of the converter (Vnom) are shown below. The Trim Down resistor should be connected between

the Trim pin and Vout. The Trim Up resistor should be connected between the Trim pin and Ground. Only one of

the resistors should be used for any given application.

Vnom

A

B

C

D

5.0V

30.955

15.805

5.884

8.450

3.3V

3.961

3.407

1.266

1.825

2.5V

1.834

3.397

0.861

2.320

1.8V

1.927

6.916

1.533

5.000

1.5V

1.353

5.851

1.533

3.935

1.2V

0.099

0.446

0.196

0.201

1.0V

0.102

0.684

0.401

0.183

K

B

Vadj

Vnom

A

down

Rtrim

)

(

_

−

−

=

D

Vnom

Vadj

C

up

Rtrim

)

(

_

−

−

=

Module

Vout

Trim

GND

Rtrimdown

Module

Vout

Trim

GND

Rtrimup