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:
Apr. 29, 2014
Filed:
May. 18, 2012
Yong-jiang Bai, Nanjing, CN;
Qiao-liang Chen, Nanjing, CN;
Ning-bin Wang, Nanjing, CN;
Ju-lu Sun, Nanjing, CN;
Yong-Jiang Bai, Nanjing, CN;
Qiao-Liang Chen, Nanjing, CN;
Ning-Bin Wang, Nanjing, CN;
Ju-Lu Sun, Nanjing, CN;
FSP Technology Inc., Taoyuan County, TW;
FSP-Powerland Technology Inc., Nanjing, CN;
Abstract
A bootstrap gate driver including a load indication unit, a bootstrap gate-drive unit and a drive-control unit is provided. The load indication unit is configured to generate a load indication signal in response to a state of a load. The bootstrap gate-drive unit is configured to drive a switch-transistor circuit in response to an inputted pulse-width-modulation (PWM) signal, wherein the switch-transistor circuit has a high-side driving path and a low-side driving path. The drive-control unit is coupled to the load indication unit and the bootstrap gate-drive unit, and configured to enable or disable the high-side driving path in response to the load indication signal. In the invention, the operation of the low-side driving path is not affected by enabling or disabling the high-side driving path.