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周蕊

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[电源设计]

120VAC/60Hz输入5V/250mA输出的辅助偏置电源SEPIC

描述

            The PMP5298 reference design provides an isolated 5V at 250mA from a 120VAC/60Hz input in less than 1 square inch of board space. This design uses the UCC3813-5 in a non-isolated SEPIC topology. The SEPIC clamping capacitor reduces ringing on the drain of the MOSFET and recaptures leakage energy to  (...)

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