Double resonance electronic converter with two-stage starting, uses a state machine to control starting of the state machine that delivers control signals to the switching transistors

摘要

The converter has a switching circuit (10) with two transistor switches (T1,T2), a double resonant circuit (12) with series (Lr,Cr) and parallel (Lp,Cp) resonant circuit, a rectifier and filtering circuit (14) and a control circuit (16) driving the transistors. The control circuit has two state machines, the first controlling the switching, and the other the starting of the first state machine.