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AssigneeLeadtrend Technology Corp.
InventorsMing-Chang Tsou, Kuan-Hsien Chou, Yi-Chuan Tsai, Cheng-Tsung Ho
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A power factor correction (PFC) controller applied to a primary side of a power converter includes a feedback pin, a sensing pin, a current detecting circuit, an output voltage detecting circuit, and a determination circuit. The current detecting circuit is coupled to the feedback pin and the sensing pin for detecting an output current of a secondary side of the power converter according to a feedback voltage of the feedback pin and a sensing voltage of the sensing pin. The output voltage detecting circuit is coupled to the feedback pin for detecting an output voltage of the secondary side of the power converter according to the feedback voltage. The determination circuit is coupled to the current detecting circuit and the output voltage detecting circuit for turning on or turning off a PFC circuit coupled to the power converter according to the output current and the output voltage.
A power factor correction controller applied to a primary side of a power converter, comprising:
An operational method of a power factor correction controller applied to a primary side of a power converter, wherein the power factor correction controller comprises a feedback pin, a sensing pin, a current detecting circuit, an output voltage detecting circuit, and a determination circuit, the operational method comprising:
Dependencies are inferred from the claim text.