Patent ID: 11942786
Assignee: SHANGHAI BRIGHT POWER SEMICONDUCTOR CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 15:
16. The harmonic distortion compensation method for a switched-mode power supply according to claim 15, wherein generating the compensation signal based on the rising phase information and the falling phase information of each cycle and triggering the main power stage module containing the power switch to perform the compensation operation based on the compensation signal comprises:
during the on-time of the power switch in the main power stage module, the compensation signal triggering the main power stage module to operate at least one of:
decreasing the on-time in a rising phase of each cycle of an input voltage;
increasing an on-time in a falling phase of each cycle of the input voltage; and
simultaneously decreasing the on-time in the rising phase of each cycle of the input voltage and increasing the on-time in the falling phase of each cycle of the input voltage; and
during the off-time of the power switch in the main power stage module, the compensation signal triggering the main power stage module to operate at least one of:
increasing the off-time in the rising phase of each cycle of the input voltage;
decreasing the off-time in the falling phase of each cycle of the input voltage; and
simultaneously increasing the off-time in the rising phase of each cycle of the input voltage and decreasing the off-time in the falling phase of each cycle of the input voltage, and
wherein the compensation signal indicates whether to change the on-time or off-time of the power switch in the main power stage, or to simultaneously change both the on-time and off-time of the power switch in the main power stage.