Patent ID: 9431911
Filing Date: 2016-08-30
CPC Classification: H02M

Claim Text:
1. A power controller suitable for a switching mode power supply, wherein the switching mode power supply has a power switch connected in series with an inductive device, and provides an output voltage to an output load, the power controller comprising: an output current estimator, for providing a load representative signal in response to a discharge time of the inductive device and a current sense signal, wherein the current sense signal represents a current through the inductive device; a block time generator, for providing a block time based on the load representative signal; a pulse width modulator for generating a pulse-width-modulation signal to control the power switch in response to a compensation signal, wherein the compensation signal is in response to the output voltage; and a logic for making a cycle time of the pulse-width-modulation signal not less than the block time.