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:
Jan. 05, 2021
Filed:
May. 24, 2019
Huawei Technologies Co., Ltd., Shenzhen, CN;
Jincan Cao, Nanjing, CN;
Yonghuan Ding, Nanjing, CN;
HUAWEI TECHNOLOGIES CO., LTD., Shenzhen, CN;
Abstract
A powered device (PD) used for power over Ethernet (PoE), where the PD includes an Ethernet port and a rectifier circuit. The rectifier circuit includes a first control circuit and a second control circuit, where the first control circuit is configured to control a first metal-oxide semiconductor field-effect transistor (MOSFET) and a second MOSFET, avoid turning on the first MOSFET and the second MOSFET at a PoE detection stage, and turn on at least one of the first MOSFET or the second MOSFET at a PoE power supply stage. The second control circuit is configured to control a third MOSFET and a fourth MOSFET, turn on at least one of the third MOSFET or the fourth MOSFET at the PoE power supply stage, and avoid turning on the third MOSFET and the fourth MOSFET at the PoE detection stage.