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:
Aug. 18, 2015
Filed:
Dec. 02, 2013
Grenergy Opto Inc., Hsin-Chu, TW;
Ren Yi Chen, Hsin-Chu, TW;
GRENERGY OPTO INC., Hsin-Chu, TW;
Abstract
Disclosure includes a controller in an integrated circuit and a related switched mode power supply. The switched mode power supply has an input power line and a ground line. An inductive device and a power switch are connected in series between the input power line and the ground line. The controller has a multifunction pin and is configured for controlling the power switch. A resistor connects the multifunction pin to the input power line. During a startup procedure, the controller provides a first conduction path conducting from the multifunction pin to the ground line. During normal operation, the controller disconnects the first conduction path, and makes the multifunction pin an output node of an error amplifier comparing a regulated output with a target value, to generate a PWM signal for controlling the power switch.