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220-V Mains 500-kHz Class-E Converter Using a BIMOS

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2 Author(s)
Lutteke, Georg ; Philips GmbH, Apparatefabrik Krefeld, Königsberger Str. 10, D-4150 Krefeld, West Germany. ; Raets, Hubert C.

Class-E converters enable high-efficiency switching at high switching frequencies and thus fulfil the fundamental preconditions for miniaturization. This, however, must be paid for with a relatively high voltage stress across the switch causing problems when the converter is operated from the mains. A 500-kHz 21-W electronic lamp ballast for 220-V mains is presented. A cascaded bipolar MOS (BIMOS) incorporating a TV deflection transistor combines rapid switching with the required excessive voltage capability for mains drive. An excellent efficiency of 93 percent could be achieved.

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Power Electronics, IEEE Transactions on  (Volume:PE-2 ,  Issue: 3 )