SEP 15, 2006 revised to MAY 09, 2007
Page 1 of 8
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FBC DC-DC Bus Converter Data Sheet
Applications
Intermediate bus architectures
Telecommunications equipment
LAN/WAN
Data processing
Features
RoHS lead solder exemption compliant
High efficiency, up to 94%
High power density - 91W/in
3
High current rating - 42A
Low profile – 12.7mm height
Input/output isolation: 1500VDC
Basic insulation
Start-up into high capacitive load
Low conducted and radiated EMI
Output overcurrent protection
Output overvoltage protection
Overtemperature protection
Remote sense
Remote On/Off (primary referenced),
positive or negative logic option
±10% output voltage trim adjust
UL 1950 recognition, CSA 22.2
No. 950-95 certification, TUV IEC950
Description
The FBC Series of high density bus converters convert a worldwide telecom bus voltage of 36 to 75 VDC to a 12V
bus at 42 A. The output is ideal for powering non-isolated, point-of-load converters such as synchronous buck
converters used commonly in Intermediate Bus Architectures.
The unit's open-frame, two-board construction provides ideal thermal transfer for maximum reliability. Power
devices are mounted on an Insulated Metal Substrate (IMS) base plate with very low thermal impedance. The
control PCB is physically isolated from the hotter IMS board, providing lower overall component temperatures for
high reliability. The standard feature set includes remote on/off, remote output voltage sensing, positive output
trim, and input undervoltage lockout and overtemperature shutdown with hysteresis.
Model Selection
Model
Input
voltage
(VDC)
Input
current, Max,
(ADC)
Output
voltage
(VDC)
Output rated
current
I rated, (ADC)
Output
Ripple/Noise
(mV p-p)
Typical
Efficiency
@ I rated, (%)
FBC42ZH
36-75
16
12.0
42
100
92.5
This product is intended for integration into end-use equipment. All the required procedures for CE marking of end-use
equipment should be followed.
Model numbers highlighted in yellow or shaded are not recommended for new designs.