PWM controller with integrated PLL

Details PWM controller with integrated PLL PWM controller with integrated PLL

2007-09-11

2007-09-11

Phu, Phuong (Department: 2611)

Pulse or digital communications

Pulse width modulation

C375S376000, C375S374000, C375S375000, C327S156000, C327S159000

Reexamination Certificate

active

10264359

ABSTRACT:
A pulse-width modulation (PWM) controller to supply power to electronic components using a phase lock loop (PLL) is presented. A PWM controller comprises an input node operable to receive a reference signal and a phase-locked loop (PLL). The PLL comprises an oscillator operable to receive an error-correction signal and to generate an oscillator signal having a frequency that is related to the error-correction signal, a phase-frequency detector (PFD) coupled to the oscillator and operable to receive the reference signal and to generate the error-correction signal based upon a phase difference between the reference signal and a feedback signal, and a suppression circuit coupled to the PFD and operable to periodically enable the PFD to generate the error-correction signal.

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