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. 22, 2012
Filed:
Mar. 05, 2010
Zhimou Ren, Chengdu, CN;
Jun Ren, Chengdu, CN;
Yunning Xie, Chengdu, CN;
Tiesheng Yan, Chengdu, CN;
Feng Lin, Chengdu, CN;
Zhimou Ren, Chengdu, CN;
Jun Ren, Chengdu, CN;
Yunning Xie, Chengdu, CN;
Tiesheng Yan, Chengdu, CN;
Feng Lin, Chengdu, CN;
O2Micro, Inc, Santa Clara, CA (US);
Abstract
A power supply system includes a power converter, a switch, and a controller. The power converter is operable for providing power to a load. The switch is coupled to the power converter and is operable for adjusting the power to the load. The switch has a gate, a source and a drain. The controller is coupled to the switch and is operable for controlling a state of the switch. The controller has a first control terminal for providing a gate voltage to the gate of the switch, a second control terminal for providing a source voltage to the source of the switch, and an input terminal for receiving a supply voltage via the source of the switch. The controller is also operable for limiting the supply voltage within a predetermined maximum level by regulating the gate voltage to a preset level.