Rossi, Kimms & McDowell LLP
Resonant switching regulator with adaptive dead time
A switching power supply of certain aspects of the invention includes a minimum dead time generating circuit that generates a minimum dead time from an OFF timing of an ON pulse detected from the voltage across an auxiliary winding of the transformer by a differentiating circuit. An ON width-determining means of a voltage control oscillator is started, after this minimum dead time, into operation to determine the ON width of the semiconductor switch.
Fuji Electric Co., Ltd.
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H02M Y02B H02M H02M H02M
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Jian
Chen