ISOLATED DC/DC CONVERTERS
48V Input 3.3V/25A, 5V/20A, 12V/8.33A Output, 1/8 Brick
07CY-85T Series
PRELIMINARY
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Isolated
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Output Over Voltage Shutdown
High Efficiency
OCP/SCP
High Power Density
Excellent Thermal Performance
Low Cost
Over Temperature Protection
Remote On/Off
Output Voltage Trim
Positive/Negative Remote Sense
Input Under Voltage Lockout
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
12.0V
5.0V
Input
Max. Output
Current
8.33A
Max. Output
Power
100W
Typical
Efficiency
90%
Model Number
Active High
07CY-85T120
07CY-85T050
07CY-85T033
Model Number
Active Low
07CY-85T12L
07CY-85T05L
07CY-85T03L
Voltage
36V – 75V
36V – 75V
36V – 75V
20A
25A
100W
85W
90%
89%
3.3V
Note: Add “G” suffix at the end of the model number to indicate Tray Packaging.
Absolute Maximum Ratings
Parameter
Input Voltage (continuous)
Remote On/Off
Min
-0.3V
-0.3V
-
-40°C
-55°C
Typ
Max
80V
18V
2000V
85°C
125°C
Notes
-
-
-
-
-
I/O Isolation Voltage
Ambient Temperature
Storage Temperature
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
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-
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-
3.0A
3.0A
2.8A
Input Current (no load)
80mA
120mA
Remote Off Input Current
2mA
5mA
Tested with simulated source impedance
of 10uH, 5Hz to 20MHz; use a
100uF/100V electrolytic capacitor with
Input Reflected Ripple Current (pk-pk)
-
-
12mA
24mA
Input Reflected Ripple Current (RMS)
2mA
4mA
ESR = 1 ohm max. at 200KHz at 25°C.
I2t Inrush Current Transient
Turn-on Voltage Threshold
Turn-off Voltage Threshold
-
0.01A2s
34V
0.02A2s
35V
32V
30V
32V
33V
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com