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:
Dec. 20, 2016
Filed:
Sep. 04, 2015
Silergy Semiconductor Technology (Hangzhou) Ltd, Hangzhou, ZheJiang Province, CN;
Jun Chen, Zhejiang Province, CN;
Silergy Semiconductor Technology (Hangzhou) LTD, Hangzhou, CN;
Abstract
A control circuit with multiple feedback loops configured for a switching power supply, can include: (i) a plurality of feedback circuits configured to receive a plurality of feedback signals of a power stage circuit, and to correspondingly generate a plurality of error signals; (ii) a plurality of switching circuits configured to transfer the error signals to a compensation circuit, where each switching circuit is correspondingly coupled to one of the feedback circuits, and where only one of the switching circuits is turned on to correspondingly transfer one of the error signals to the compensation circuit when in a steady status; (iii) the compensation circuit being configured to receive the error signals, and to generate a compensation signal; and (iv) a PWM control circuit configured to receive the compensation signal, and to generate a PWM control signal to control operation of a power switch in the power stage circuit.