Patent ID: 11888395
Assignee: CHENGDU MONOLITHIC POWER SYSTEMS CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 3:
4. The control circuit of claim 3, further comprising:
a reference voltage generator, comprising:
a filtering capacitor having a first terminal and a second terminal, wherein the first terminal is coupled to the second input terminal of the error amplifier to provide a fourth reference voltage, and the second terminal is coupled to a reference ground;
a primary reference voltage generator configured to provide a fifth reference voltage; and
a filtering resistor having a first terminal and a second terminal, wherein the first terminal is coupled to the primary reference voltage generator to receive the fifth reference voltage, and the second terminal is coupled to the first terminal of the filtering capacitor; and

an elimination circuit, comprising:
a first pulse generator coupled the output terminal of the first comparator to receive the first comparing signal and configured to generate a first pulse signal at a falling edge of the first comparing signal; and
a third switch coupled in parallel with the filtering resistor and configured to be controlled by the first pulse signal.