The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 18, 2025
Filed:
Apr. 25, 2021
Low-voltage startup circuit for low-inductance wireless charging system and wireless charging system
Chengdu Convenientpower Semiconductor Co. Ltd, Sichuan, CN;
Wei Wei, Sichuan, CN;
Senlin Hou, Sichuan, CN;
Jianping Wang, Sichuan, CN;
Zhitong Guo, Sichuan, CN;
CHENGDU CONVENIENTPOWER SEMICONDUCTOR CO. LTD, Sichuan, CN;
Abstract
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).