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. 07, 2013
Filed:
Jan. 18, 2011
Duen-yi Ho, New Taipei, TW;
Chun-jen Chen, New Taipei, TW;
Wei-chieh Chou, New Taipei, TW;
Tsung-sheng Huang, New Taipei, TW;
Duen-Yi Ho, New Taipei, TW;
Chun-Jen Chen, New Taipei, TW;
Wei-Chieh Chou, New Taipei, TW;
Tsung-Sheng Huang, New Taipei, TW;
Hon Hai Precision Industry Co., Ltd., New Taipei, TW;
Abstract
A voltage regulating circuit includes a pulse width modulation controller, a current sense circuit, a voltage feedback circuit, and a gain-and-bias circuit. The current sense circuit includes an inductor and a capacitor. The voltage feedback circuit includes first and second resistors. The gain-and-bias circuit includes an operational amplifier. A first terminal of the capacitor is connected to an inverting input terminal of the operational amplifier through a third resistor. A second terminal of the capacitor is connected to a non-inverting input terminal of the operational amplifier through a fourth resistor. The inverting input terminal of the amplifier is connected to an output terminal of the operational amplifier through a fifth resistor. The non-inverting input terminal of the operational amplifier is grounded through a sixth resistor. The output terminal of the operational amplifier is connected to the node between the first and second resistors through a seventh resistor.