Patent ID: 8384362
Filing Date: 2013-02-26
Classification: G05F

Abstract:
1. A power regulator for converting an input electrical signal to an output electrical signal to supply power to a load, said power regulator comprising: a) a power stage having switching devices and a filter; b) a regulation signal generator for said switching devices, wherein said regulation signal generator comprises a feedback circuit and a pulse width modulator (PWM), said feedback circuit being configured to receive an output signal from said power stage, said PWM being configured to receive an output from said feedback circuit, and to generate a PWM control signal; c) a constant time generator configured to receive said PWM control signal and generate a constant time signal based on a duty cycle of said PWM control signal; and d) a logic/driving circuit configured to receive said PWM control signal and said constant time signal, and to control operation of said switching devices to modulate said output signal from said power stage, and to maintain a pseudo constant operation frequency.