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 1.2-2.5 Vdc/80 A, 3.3 Vdc/70 A, 5 Vdc/48 A, 12 Vdc/20 A Output

General Specifications

Parameter

Min

Typ

Max

Notes

Efficiency

Vo=2.5 V

Vo=1.8 V

Vo=1.5 V

Vo=1.2 V

91%

89%

89%

88%

86%

84%

82%

94%

92.5%

92%

91%

89%

87%

85%

-

-

-

-

-

-

-

Vin=48 V, full load , Ta=25

°C

Switching Frequency

280 kHz

330 kHz

380 kHz

Isolation capacitance

-

1500 pF

-

Remote Sense Compesation

-

-

10% Vo

Output Voltage Trim Range

80% Vo

-

110% Vo

The total voltage increased by trim and

remote sense should not exceed

10%Vo.

Over Temperature Protection

-

125

°C

-

Over Voltage Protection

-

130% Vo

-

Vin=48V, full load, Hiccup mode

MTBF

1,113,071 hours

Calculated Per Bell Core SR-332

°C)

Dimensions

Inches

millimeters

2.28 x 2.4 x 0.42

57.51 x 60.98 x 10.67

Weight

-

76 g

-

Note:

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

0RHB-D0TxxL. 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

0RHB-D0Txx0. The remote

on/off pin open, Unit on.

Current Sink

0 mA

-

0.75 mA