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:
Feb. 22, 2011
Filed:
Nov. 21, 2008
Chien Peng Yu, Hsinchu, TW;
Yi Cheng Wang, Hsinchu, TW;
YE Hsuan Yan, Hsinchu, TW;
Chih Chi Hsu, Hsinchu, TW;
Chien Peng Yu, Hsinchu, TW;
Yi Cheng Wang, Hsinchu, TW;
Ye Hsuan Yan, Hsinchu, TW;
Chih Chi Hsu, Hsinchu, TW;
Advanced Analog Technology, Inc., Science-Based Industrial Park, Hsinchu, TW;
Abstract
A PWM comprises a voltage transformation module, a voltage-sensing module and a timer. The voltage transformation module is configured to transform an input voltage into an output voltage. The voltage-sensing module is coupled to the voltage transformation module and configured to detect a voltage of a first terminal, wherein the voltage of the first terminal is proportional to the output voltage. The timer is configured to measure the time duration for which the voltage of the first terminal is lower than a reference voltage, wherein the timer initiates a short circuit signal when the time duration is greater than a predetermined value.