High-efficiency adaptive DC/AC converter

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Periodic switch cut-out

Reexamination Certificate

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Details

C315S307000, C363S098000

Reexamination Certificate

active

07417382

ABSTRACT:
A CCFL power converter circuit is provided using a high-efficiency zero-voltage-switching technique that eliminates switching losses associated with the power MOSFETs. An optimal sweeping-frequency technique is used in the CCFL ignition by accounting for the parasitic capacitance in the resonant tank circuit. Additionally, the circuit is self-learning and is adapted to determine the optimum operating frequency for the circuit with a given load. An over-voltage protection circuit can also be provided to ensure that the circuit components are protected in the case of open-lamp condition.

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Case No. C013995 JCS ADR,02Micro International Limited(Plaintiff) v.Monolithic Power Systems, Inc.(Defendant and Counterclaimant), Monolithic Power Systems' Answer to First Amended Complaint and Counterclaim, Dec. 5, 2001.
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Case Nos. CV-00-4071

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