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. 03, 2017
Filed:
Jun. 28, 2013
Zte Corporation, Shenzhen, Guangdong, CN;
Xifeng Pu, Shenzhen, CN;
Dacheng Zheng, Shenzhen, CN;
Binchuan Dai, Shenzhen, CN;
Dan Li, Shenzhen, CN;
Zhenghai Wan, Shenzhen, CN;
Junkai Li, Shenzhen, CN;
ZTE CORPORATION, Shenzhen, Guangdong, CN;
Abstract
Disclosed are an induction current sampling device and method for a bridgeless PFC circuit. The device includes a first sampling unit, a second sampling circuit and a third sampling circuit, wherein the first sampling unit, connected in serial with a first switch transistor of the bridgeless PFC circuit, is configured to sample a current flowing through the first switch transistor to acquire a first sampling signal V; the the second sampling unit, connected in serial with a second switch transistor of the bridgeless PFC circuit, is configured to sample a current flowing through the second switch transistor to acquire a second sampling signal V; and the third sampling unit, with one terminal connected with a ground of the bridgeless PFC circuit and the other terminal connected with a negative output of a PFC capacitor of the bridgeless PFC circuit, is configured to sample a current flowing through a boost diode of the bridgeless PFC circuit to acquire a third sampling signal V