Chengdu Convenientpower Semiconductor Co. Ltd.

Jianping Wang

Zhitong Guo

Wei Wei

Senlin Hou

A low-voltage startup circuit for a low-inductance wireless charging system includes a voltage input port Vrect, a common grounding port VSS, a PMOS driver signal control module pgate_ctrl_logic, a NMOS MN1 and a PMOS MP1, a Vmax power supply selection control module vmax_sel, a power-on reset module por, a low-voltage band-gap reference circuit lv_bgr, a rectifier logic control module boost_logic, a rectifier SR and a rectifier output under_voltage protection control module vrect_uvlo. The low-voltage startup circuit can normally start the MCU at the Vrect voltage under a low-voltage condition (1.4V).

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Sichuan, China

Jianping Wang