CPC H02M 3/1566 (2021.05) [H02M 1/0025 (2021.05)] | 15 Claims |
1. A control circuit for a switching converter, wherein:
a) the control circuit is configured to generate a switching control signal according to an output voltage of the switching converter to control a switching state of a power transistor in the switching converter, and to adjust an output current of the switching converter;
b) the control circuit is configured to adjust a length of a switching period of the power transistor opposite to a change trend of the output voltage, in order to maintain an average of the output current as constant;
c) the switching period comprises a first time interval and a second time interval; and
d) the control circuit is configured to generate a timing signal according to the output voltage and to adjust the second time interval by comparing the timing signal against a timing reference signal.
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