Tung & Associates
Charger circuit and power conversion circuit thereof
A charging circuit includes a power conversion circuit, an inductor, and at least one conversion capacitor. The power conversion circuit includes a conversion switch circuit and a conversion control circuit. The conversion switch circuit includes an upper switch, a lower switch, and at least one auxiliary switch. In a switching conversion mode, the conversion control circuit operates the conversion switch circuit to switch the inductor to plural voltage levels repetitively for converting an input power to a charging power to charge a battery by switching power conversion. In a capacitive conversion mode, the conversion control circuit operates the conversion switch circuit to switch the conversion capacitor between two of voltage division nodes periodically for converting the input power to the charging power by capacitive power conversion.
RICHTEK TECHNOLOGY CORPORATION
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inventional inventional additional inventional inventional
Tsung-Han Wei-Jen Chun-Kai Shun-Yu
Lee Huang Chang Huang