Boosting Power Supply Efficiency for Desktop Computers
by Dhaval Dalal, Technical Marketing Director, Power Supplies, ON Semiconductor, Phoenix, Power Electronics Technology, Feb 01 2005
Focus:
The efficiency of ATX power supplies can be improved by 1) switching from passive power factor correction (PFC) to active PFC, 2) changing from traditional single-switch forward topology with reset winding to a forward topology with active clamp reset or a half-bridge topology in the main power stage 3) switching from Schottky rectifiers to synchronous MOSFET rectifiers and 4) other component improvements.
What you’ll learn:
- How to improve the efficiency of ATX (desktop computer) power supplies
- How to meet 80PLUS energy efficiency requirements
- How to make an ATX power supply lighter, smaller, and quieter
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