HEHB-70A-48V-1.8V
48Vin 70Aout 1.8Vout DC-DC Converter
High Efficiency, Isolated Half Brick
Features
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Very high efficiency: 91% at 35A load, 89% at
full rated load current
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Wide input voltage range (35 to 75Vdc)
Total weight: 77 grams (2.67 oz.) Open-Frame Version
Low profile, industry standard footprint and pinout:
2.3" x 2.4" x 0.44" (58.4mm x 61.0mm x 11.2mm)
Back Bias protection
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Monolithic start-up, with pre-biased output
Parallel for increased power:
External Clock Synchronization (Option)
Current Share, Primary (Option)
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Soft Start
Remote ON/OFF
Output voltage trim – Industry standard trim equation
Remote sense
Fixed Switching Frequency
(Output ripple frequency @ 420 KHz)
Under voltage lockout (UVLO), Input – auto recover
Over voltage protection – auto recover
Over current protection – auto recover
Over temperature protection – auto recover
Operating temperature range: -40°C to +100°C
Input to Output Isolation at 2000Vdc, 10MΩ
Pending- UL/CUL, CSA/CSAUS, TUV and KEMA
ISO 9001 Certified manufacturing processes
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Product Highlights
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HEHB Family of dc-dc converters is
Magnetek’s solution for next generation,
cutting-edge board applications.
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Synchronous rectification uses MOSFET
instead of Schottky diodes providing
extreme reduction in heat generation,
boosting efficiency, eliminating the need for
a heat sink and increased reliability.
Low profile (0.44”), open frame construction
allows smaller card pitch and improves
system ventilation.
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Fixed switching frequency provides
predictable EMI characteristics.
P/N 7A02WNXXXX
PreliDmSinHEaHryB 70A 48V 1-8V 7A02 Rev07-01-03.doc– page 1 –
Magnetek PEG web site, www.magnetekpower.com