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:
Nov. 27, 2018
Filed:
Jan. 14, 2016
Shenzhen China Star Optoelectronics Technology Co., Ltd., Shenzhen, Guangdong, CN;
Dan Cao, Guangdong, CN;
Xianming Zhang, Guangdong, CN;
Shenzhen China Star Optoelectronics Co., Ltd, Shenzhen, Guangdong, CN;
Abstract
Disclosed is a feedback control circuit and a power management module, wherein the feedback control circuit includes a sample analysis circuit, a comparison circuit and a switch control circuit, and the sample analysis circuit samples an output signal of the power management chip, and analyzes a variation trend of the output signal to obtain a first output signal; the comparison circuit compares the first output signal and a reference signal to obtain a second output signal; the switch control circuit comprises a Pulse Width Modulation PWM control circuit and a switch, wherein the PWM control circuit is coupled to the comparison circuit and the switch control circuit, and the switch is coupled to the power management chip, and the switch control signal adjusts a duty ratio of the switch according to the second output signal to adjust a compensation duration of the output signal of the power management chip.