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:
May. 01, 2012
Filed:
Jul. 24, 2008
Shui-mu Lin, Taichung County, TW;
Jien-sheng Chen, Miaoli County, TW;
Kwan-jen Chu, Hsinchu, TW;
Tsung-wei Huang, Taipei, TW;
Chao-hsuan Chuang, Jhubei, TW;
Shui-Mu Lin, Taichung County, TW;
Jien-Sheng Chen, Miaoli County, TW;
Kwan-Jen Chu, Hsinchu, TW;
Tsung-Wei Huang, Taipei, TW;
Chao-Hsuan Chuang, Jhubei, TW;
Richtek Technology Corp., Hsinchu, TW;
Abstract
The phase node voltage or the PWM signal in an asynchronous boost converter is monitored to detect a phase node voltage ringing. When a phase node voltage ringing is detected, a detection signal is asserted to establish a bypass path to bypass the inductor of the converter. A charge bypass circuit is shunt to the inductor, and controlled by the detection signal to establish the bypass path. Due to the bypass path, the phase node voltage is maintained at a constant, and the phase node voltage radiation and input/output noise are eliminated.