ZCS PWM DC/DC converter circuit diagram

Published:2011/9/7 4:08:00 Author:Vicky | Keyword: ZCS PWM DC/DC converter | From:SeekIC

Topological structure: Buck DC/DC ZCS PWM converter, main switch T1 (including antiparallel diode D1), booster diode T2 (D2 is the antiparallel diode of T2). Suppose thatthe diode switches are all ideal devices; the inductances and capacitances are all ideal components; Cr is big enough, Lf is also big enough, and Lf>>Lr. I switching cycle, output voltage is 0, remaining and unchanged; if it retains Io, unchanged, so Lf, Cf and load resistance can be regarded as a constant current source Io. The state of switch: In a switching cycle Ts, converter has 5 switching state. Every switching state has a corresponding equivalence circuit.



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