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 9.6 VDC/40 A Output, 1/8 Brick

Output Specifications

Parameter

Min

Typ

Max

Notes

Output Voltage Set Point

Vin=38 V

Vin=48 V

Vin=55 V

7.15 V

9.10 V

10.45 V

7.30 V

9.24 V

10.62 V

7.6 V

9.6 V

11.0 V

lo=0 A - Iomax

Load Regulation

Vin=38 V

Vin=48 V

Vin=55 V

-

-

-

0.16 V

0.13 V

0.10 V

0.25 V

0.20 V

0.15 V

lo=0 A - Iomax

Line Regulation

-

3.4 V

4.0 V

Regulation Over Temperature

(-40

°C to +85 °C)

-

100 mV

150 mV

Output Current

0 A

-

40 A

Max output power 300W

Current Limit Threshold

Vin=38 V

Vin=48 V

Vin=55 V

46 A

38 A

31 A

53 A

44 A

38 A

60 A

50 A

45 A

Short Circuit Surge Transient

-

1.5 A

2.5 A

Ripple and Noise (rms)

-

25 mV

50 mV

Ripple and Noise (pk-pk)

-

90 mV

150 mV

Vin=48 V, 0-20 MHz BW, with a 1

uF ceramic cap and a 47 uF

tantalum cap at the output.

Turn on Time

-

20 mS

30 mS

Overshoot at Turn on

-

0%

3%

Output Capacitance

47 uF

-

3300 uF

Transient Response

Overshoot

-

100 mV

150 mV

50% ~ 75%

Max Load

Settling Time

-

-

-

Overshoot

-

100 mV

150 mV

75% ~ 50%

Max Load

Settling Time

Vin=48 V

-

-

-

Test conditions: di/dt = 0.5 A/uS,

Vin=48 V, Ta=25°C, with a 47 uF

tantalum cap at the output.

Note: All specifications are typical at 25

°C unless otherwise stated.

General Specifications

Parameter

Min

Typ

Max

Notes

Efficiency

95.5%

97%

-

Vin=48 V, full load

Switching Frequency

120 kHz

150 kHz

180 kHz

Isolation Capacitance

-

1500 pF

-

Input to Output Isolation Voltage

-

1500 V

-

Over Temperature Protection

-

120

°C

-

Average PCB temperature will not

exceed 120°C.

MTBF

TBD

Calculated Per Bell Core SR-332

°C)

Dimensions

Inches (L × W × H)

Millimeters (L × W × H)

2.30 x 0.896 x 0.50

58.41 x 22.76 x 12.7

Weight

-

45 g

-

Note: All specifications are typical at 25

°C unless otherwise stated.