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PFC SIGNAL GENERATION CIRCUIT, PFC CONTROL SYSTEM USING THE SAME, AND PFC CONTROL METHOD
PFC SIGNAL GENERATION CIRCUIT, PFC CONTROL SYSTEM USING THE SAME, AND PFC CONTROL METHOD
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机译:PFC信号生成电路,使用其的PFC控制系统和PFC控制方法
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摘要
A PFC signal generation circuit which generates a PFC signal to control a PFC circuit including a first inductor connected to a first switch and a second inductor connected to a second switch includes: a first control signal output circuit that outputs a first PFC signal to turn on the first switch at a zero current detection timing of the first inductor; a timing adjustment circuit that generates a control signal to turn on the second switch after waiting until a target timing, when a zero current detection timing of the second inductor is earlier than the target timing, and to turn on the second switch at a target timing in a subsequent cycle, when it is later than an allowable period from the target timing; and a second control signal output circuit that generates a second PFC signal to turn on the second switch according to a control signal.
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