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:
Jul. 15, 2014
Filed:
Nov. 12, 2012
Chia-wei Liao, Zhubei, TW;
Jing-meng Liu, Zhubei, TW;
Leng-nien Hsiu, Zhubei, TW;
Pei-yuan Chen, Taoyuan, TW;
Chia-Wei Liao, Zhubei, TW;
Jing-Meng Liu, Zhubei, TW;
Leng-Nien Hsiu, Zhubei, TW;
Pei-Yuan Chen, Taoyuan, TW;
Richtek Technology Corporation, R.O.C., Zhubei, Hsinchu, TW;
Abstract
A control circuit of a switching regulator, which controls rectified power within a predetermined range, detects an input voltage and an input current to generate a voltage detection signal and a current detection signal respectively, and the voltage detection signal and the current detection signal are multiplied by one the other to generate a power index. The control circuit generates an error signal according to the power index and a reference signal. A low-pass-filter filters a high frequency band in the process. A control signal generation circuit of the control circuit generates a control signal according to the error signal. And a driver circuit of the control circuit generates an operation signal according to the control signal, for switching a power switch to convert the rectified power to an output voltage.