National Cheng-Kung University

Kai-Hui Chen

Tsorng-Juu Liang

Jiann-Fuh Chen

A flyback converter includes a primary side circuit, a secondary side circuit and a controller. The primary side circuit includes a primary winding and a main switch electrically connected to the primary winding. The secondary side circuit includes a secondary winding and an output diode electrically connected to the secondary winding and having a parasitic electrical parameter. The controller generates a correcting parameter for counteracting an effect on an output voltage of the flyback converter from the parasitic electrical parameter, wherein the parasitic electrical parameter is an equivalent series-connection resistance Rof the output diode and the secondary side circuit, and the correcting parameter is calculated based on the formula wherein ndenotes a turns number of the primary winding, ndenotes a turns number of the secondary winding, and Idenotes an initial current value which is detected when the main switch is conducted.

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Tainan, Taiwan

Kai-Hui Chen