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. 09, 2011
Filed:
Apr. 01, 2009
Kwan-jen Chu, Hsinchu, TW;
Nien-hui Kung, HsinChu, TW;
Tzu-huan Chiu, Chupei, TW;
Chien-ping LU, Tainan, TW;
Kwan-Jen Chu, Hsinchu, TW;
Nien-Hui Kung, HsinChu, TW;
Tzu-Huan Chiu, Chupei, TW;
Chien-Ping Lu, Tainan, TW;
Richtek Technology Corporation, Hsin-chu, TW;
Abstract
The present invention discloses a boost driver circuit which converts an input voltage to an output voltage and supplies it to a load, the boost driver circuit comprising: a power transistor electrically connected with a node between the input voltage and the output voltage; a pulse width modulation driver circuit for controlling the operation of the power transistor; an output node electrically connected with the output voltage; a feedback node electrically connected with the load; a low voltage transistor electrically connected with the feedback node; and a clamp and fast discharge circuit electrically connected with the feedback node for discharging the feedback node when the voltage at the feedback node is higher than a predetermined voltage.