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This paper discussed the regulation characteristics of boundary conduction mode PFC converter with a novel zero-crossing point detector. In the conventional method, the zero-crossing point is detected by observing the change of inductor voltage. The detection of zero-crossing point is delayed due to the effect of parasitic capacitors in the main components of PFC converter. The proposed detector can...
This paper presents a novel boundary current mode boost-type PFC converter for driving the light emitting diode lightings. In the PFC converter, a novel method for zero-crossing point of inductor current detecting is proposed. In conventional boundary current mode PFC converter, the zero-crossing point is detected by observing the inductor voltage. The detection of zero-crossing point is delayed by...
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