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:
Mar. 10, 2015
Filed:
Jul. 30, 2012
Wenqing Wang, Guangdong, CN;
Xiaohua Yang, Guangdong, CN;
Chuntian Yu, Guangdong, CN;
Yuming Feng, Guangdong, CN;
Wenqing Wang, Guangdong, CN;
Xiaohua Yang, Guangdong, CN;
Chuntian Yu, Guangdong, CN;
Yuming Feng, Guangdong, CN;
Shenzhen BYD Auto R&D Company Limited, Shenzhen, Guangdong, CN;
BYD Company Limited, Shenzhen, Guangdong, CN;
Abstract
A control integrated circuit for controlling a switch power supply, including: a voltage collecting module, configured to collect a feedback voltage based on an output voltage of the switch power supply; an error amplifying module, configured to compare the feedback voltage with a reference voltage and generate an error voltage; a time collecting module, configured to obtain a degaussing time signal based on the feedback voltage; and a constant voltage and current module, configured to collect a peak current feedback signal of a switch transistor, generate a control signal based on the error voltage, the degaussing time signal and the peak current feedback signal, wherein the control signal is for controlling an operating frequency and a duty ratio of the switch transistor, and control the switch transistor according to the control signal.