Low power PLL for PWM switching digital control power supply

Details Low power PLL for PWM switching digital control power supply Low power PLL for PWM switching digital control power supply

2006-09-26

2006-09-26

Nguyen, Linh My (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

C327S158000

Reexamination Certificate

active

07113011

ABSTRACT:
A timing source for a pulse generator is disclosed, which timing source includes an input for receiving a reference clock output at a reference operating frequency. An edge generator is provided for generating a plurality of clock edges from an edge of the reference clock during one period thereof, with the spacing of the plurality of clock edges being a multiple of a predetermined divisor. As such, the resolution of such spacing emulates a higher clock frequency than the reference operating frequency. A selector then selects one of the plurality of clock edges from a reference one thereof to define the width of a pulse.

REFERENCES:
patent: 5889436 (1999-03-01), Yeung et al.
patent: 6642758 (2003-11-01), Wang et al.

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