Universal and fault-tolerant multiphase digital PWM...

Details Universal and fault-tolerant multiphase digital PWM... Universal and fault-tolerant multiphase digital PWM...

2010-02-16

2010-10-26

Mai, Lam T (Department: 2819)

Coded data generation or conversion

Phase or time of phase change

Synchro or resolver signal

C341S145000

Reexamination Certificate

active

07821431

ABSTRACT:
A multiphase hybrid digital pulse width modulator can comprise a counter that is selectable between at least two different numbers of states to indicate a first portion of a switching period. Unclocked logic can indicate a second portion of the switching period. The unclocked logic can include a delay line.

REFERENCES:
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patent: 7667625 (2010-02-01), Prodic et al.
patent: 2005/0135023 (2005-06-01), Goder et al.
patent: 2006/0022656 (2006-02-01), Leung et al.
patent: 2007/0285180 (2007-12-01), Wu
patent: WO 2006/037214 (2006-04-01), None
U.S. International Searching Authority, International Search Report and Written Opinion for International Appln. No. PCT/2008/055028, dated Oct. 14, 2009, 11 pages.

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