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/25A, 5V/20A, 12V/8.33A Output, 1/8 Brick

•

Isolated

•

Output Over Voltage Shutdown

•

High Efficiency

•

OCP/SCP

•

High Power Density

•

Over Temperature Protection

•

Excellent Thermal Performance

•

Remote On/Off

•

Low Cost

•

Output Voltage Trim

•

Input Under Voltage Lockout

•

Positive/Negative Remote Sense

Description

The 07CY-85T Series are isolated DC/DC converters that operate from a nominal 48V source. These units

provide up to 100W of output power.

These units are designed to be highly efficient and cost-effective.

Features include remote on/off, short circuit protection, over current protection, over temperature protection,

input under voltage lockout, and output over voltage protection. These converters are provided in a compact, 1/8

brick industry standard package.

Part Selection

Output

Voltage

Input

Voltage

Max. Output

Current

Max. Output

Power

Typical

Efficiency

Model Number

Active High

Model Number

Active Low

12.0V

36V – 75V

8.33A

100W

90%

07CY-85T120

07CY-85T12L

5.0V

36V – 75V

20A

100W

90%

07CY-85T050

07CY-85T05L

3.3V

36V – 75V

25A

85W

89%

07CY-85T033

07CY-85T03L

Note: Add “G” suffix at the end of the model number to indicate Tray Packaging.

Absolute Maximum Ratings

Parameter

Min

Typ

Max

Notes

Input Voltage (continuous)

-0.3V

-

80V

Remote On/Off

-0.3V

-

18V

I/O Isolation Voltage

-

-

2000V

Ambient Temperature

-40

°C

-

85

°C

Storage Temperature

-55

°C

-

125

°C

Input Specifications

Parameter

Min

Typ

Max

Notes

Input Voltage

36V

48V

75V

Input Current (full load)

Vo=12.0V

Vo=5.0V

Vo=3.3V

-

-

-

-

-

-

3.0A

3.0A

2.8A

Input Current (no load)

-

80mA

120mA

Remote Off Input Current

2mA

5mA

Input Reflected Ripple Current (pk-pk)

-

12mA

24mA

Input Reflected Ripple Current (RMS)

-

2mA

4mA

Tested with simulated source impedance

of 10uH, 5Hz to 20MHz; use a

100uF/100V electrolytic capacitor with

ESR = 1 ohm max. at 200KHz at 25

°C.

I

-

0.01A

0.02A

Turn-on Voltage Threshold

32V

34V

35V

Turn-off Voltage Threshold

30V

32V

33V

07CY-85T Series

PRELIMINARY