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36W evaluation board using ICE2QS03G

The demo-board described here is a 36W power supply using quasi-resonant flyback converter topology. The PWM controller ICE2QS03G is a second generation quasi-resonant controller IC developed by Infineon Technologies. The typical applications are for TV-sets, DVD-players, Set-top boxes, netbook adapters, home audio and printer applications. In normal operation, the digital frequency reduction with decreasing load enables a quasi-resonant operation till very low load. As a result, the system efficiency over the entire load range is significantly improved compared to conventional free running quasi resonant converter implemented with only maximum switching frequency limitation.

8.04 MB
Nov 12, 2011