Patent ID: 9489001
Filing Date: 2016-11-08
CPC Classification: G05F,H02M

Claim Text:
1. A constant ON-time or constant OFF-time switching power converter, comprising: a power stage circuit including at least one power switch, for converting an input voltage to an output voltage by an operation of the power switch; a control circuit for generating a control signal to control the power switch, the control circuit including: a flip-flop for generating an output signal according to a set input and a reset input, the output signal determining an ON-time or an OFF-time of the power switch, wherein one of the set input and the reset input is coupled to an output of the logic circuit, and the other one of the set input and the reset input is coupled to a trigger signal which determines a start time of the ON-time or OFF-time of the power switch; wherein before the switching frequency of the power switch is aligned to the fixed switching frequency, the frequency of the clock signal is faster than the switching frequency of the power switch.