Patent ID: 11923758
Assignee: DELTA ELECTRONICS, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 13:
14. The power conversion circuit according to claim 1, further comprising an upper switch, a lower switch, a fourth winding and an output inductor, wherein the upper switch and the lower switch are connected in series between the input positive terminal and the input negative terminal, the fourth winding is coupled with the first winding, the second winding and the third winding, and the output inductor and the fourth winding are connected with each other in series between a node connecting the upper switch and the lower switch and the output positive terminal, wherein the upper switch and the lower switch are selectively turned on or turned off, so that the second resonant capacitor, the third resonant capacitor and the output capacitor are pre-charged.