Bus Converter
48V Input / 9.4V Output / 70A
07CN-70S10L
PRELIMINARY
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Ideal for Intermediate Bus Architectures
Industry standard half-brick package
Up to 500W at 96.5% efficiency
1500V isolation
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Safety Agency Approvals
Description
The 07CN-70S “Cimarron” Series are isolated DC/DC converters that operate from a nominal 48V source.
These converters are intended to provide isolation and step down to generate an intermediate bus for the
purpose of powering non-isolated Point-of-Load (POL) converters. These units will provide up to 500W of
output power from a 48V input. These units are designed to be highly efficient and very low cost and are thus
unregulated. The downstream POL converters will provide the precise regulation required by the load.
Features include remote on/off, over current protection and undervoltage lockout. These converters are
provided in an industry standard half-brick package.
Part Selection
Output
Voltage
9.4V
Input Voltage
Max. Output
Current
70A
Max. Output
Power
Typical
Efficiency
96.5%
Model Number
48V
500W
07CN-70S10L
Input Specifications
Parameter
Min
Typ
Max
55 VDC
165mA
Notes
Input Voltage Range
Input Current (no load)
Input Current (full load)
Reflected Ripple Current
(pk-pk)
36 VDC
15A
5mA rms
15mA pk-pk
with a 12uH source inductor
at nom. Vin and full load.
Undervoltage Lockout
Turn-on
Turn off
35 VDC
33 VDC
Overvoltage Lockout
57.5 VDC
Output Specifications
Parameter
Min
Typ
Max
Notes
Output Voltage
36Vin
7.1
9.4
Setpoint at no load.
48Vin
55Vin
10.8
Output Current
0A
70A
Output Power
500W
Load Regulation
0.25V
0 to 20MHz Bandwidth
Use 4, 1uF ceramic caps
and 2, 15µF tantalum
capacitor on output
Ripple and Noise
Load Capacitance
160mV pk-pk
3000uF
0uF
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
