Adaptive Off–Time Control For Variable-Frequency, Soft-Switched Flyback Converter At Light Loads
نویسندگان
چکیده
The soft switching of a flyback converter can be achieved by operating the circuit in the critical conduction mode. However, the critical-mode operation at light loads cannot be maintained due to a very high switching frequency and the loss of the output voltage regulation. A control which regulates the output down to the zero load and maintains soft switching at light loads is proposed. The proposed control scheme was implemented in the 380 V/19 V, 65 W flyback dc/dc converter.
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