| US 7,602,620 B2 | ||
| Controller for power converter | ||
| Laszlo Lipcsei, San Jose, Calif. (US); and Catalin Popovici, San Jose, Calif. (US) | ||
| Assigned to O2Micro International Limited, Georgetown, Grand Cayman (Cayman Islands) | ||
| Filed on Dec. 30, 2004, as Appl. No. 11/26,725. | ||
| Application 11/026725 is a continuation in part of application No. 10/775275, filed on Feb. 10, 2004, granted, now 7,304,866. | ||
| Claims priority of provisional application 60/543628, filed on Feb. 11, 2004. | ||
| Prior Publication US 2005/0190581 A1, Sep. 01, 2005 Prior Publication US 2008/0089098 A9, Apr. 17, 2008 |
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| Int. Cl. H02M 3/335 (2006.01); H02J 1/00 (2006.01) | ||
| U.S. Cl. 363—17 [363/15; 363/16] | 15 Claims |
| 1. A controller for providing out of phase drive signals to a power convener having at least a first power unit and second
power unit, said controller comprising:
input circuitry adapted to receive a first signal from a first path and a second signal from a second path and provide an
output signal in response to a difference between said first and second signals, said first signal representative only of
a current level of said first power unit during a first time interval and said first signal representative only of a current
level of said second power unit during a second time interval; and
output circuitry responsive to at least said output signal to provide said out of phase drive signals to said first and second
power unit.
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