Patent ID: 11929669
Assignee: INVENTCHIP TECHNOLOGY CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G  Y | IPC G  H

Claim 17:
18. The method of claim 17, wherein the first control signal and the second control signal are configured such that:
the first transistor and the second transistor are turned off before the AC voltage crosses zero; and
one of the first transistor and the second transistor is configured to be turned off after the AC voltage crosses zero, and the other of the first transistor and the second transistor is configured to be turned on and off at the targeted switching frequency; and
after the first time period, a third control signal is generated to control the first transistor and the second transistor to switch at a first frequency, wherein the targeted switching frequency is greater than the first frequency.