Title: High power electronic ballast with an integrated magnetic component
Application Number: 00806585 Application Date: 2000.12.13
Publication Number: 1348676 Publication Date: 2002.05.08
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H05B41/282
Applicant(s) Name: Koninklijke Philips Electronics N.V. Address:
Inventor(s) Name: C. Chang;A. Hernandez
Attorney & Agent: luo peng
Abstract:
    A high power electronic ballast for operating one or more discharge lamps includes a power factor correction high frequency SEPIC converter input stage in cascade with an output stage made up of a half-bridge resonant converter. In place of the conventional isolation transformer in the output stage, the input stage utilizes a single integrated transformer inductor magnetic component, thereby eliminating the usual output stage isolation transformer. The input stage is operated in a critical conduction mode which further improves the electronic ballast.
Time: 7
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