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:
Jul. 08, 2014
Filed:
Jan. 09, 2012
Chih-kai Kang, San Jose, CA (US);
Wyant Chan, Sunnyvale, CA (US);
Pierte Roo, Sunnyvale, CA (US);
Marvell International Ltd., Hamilton, BM;
Abstract
A voltage regulator includes a master circuit, first and second filters, and a slave circuit. The master circuit provides a second reference voltage based on a first reference voltage and a supply voltage. The first filter provides a filtered second reference voltage based on the second reference voltage. The second filter provides a filtered supply voltage based on the supply voltage. The slave circuit provides a third reference voltage based on the filtered second reference voltage and the filtered supply voltage. The second filter includes an NMOS transistor and a capacitor. The gate and the drain of the NMOS transistor receive the supply voltage. A first terminal of the capacitor is electrically coupled to a source of the NMOS transistor. A second terminal of the capacitor is electrically coupled to ground. The source of the NMOS transistor provides the filtered supply voltage.