A description of 28W switching mode power supply evaluation board designed in a quasi-resonant flyback converter topology using ICE2QR0665G Quasi-resonant CoolSET.

This application note is a description of 20 W switching mode power supply evaluation board designed in a quasi-resonant flyback converter topology using ICE2QR2280G-1 Quasi-resonant CoolSET™ .The target application of ICE2QR2280G-1 are for set-top box, portable game controller, DVD player, netbook adapter and auxiliary power supply for LCD TV, etc. With the CoolMOS™ integrated in this IC, it gr…

In this application, an Infineon ICE3RBR4765JG from the CoolSET™ jitter series is used as a flyback controller. The controller has a built-in 650 V CoolMOS™ as the main switching component, as well as the startup cell. The reference design board operates in Discontinuous Conduction Mode (DCM), running at 65 kHz switching frequency.