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:
Nov. 23, 2004
Filed:
May. 22, 2003
Applicant:
Inventors:
Bruce Rosenthal, Los Gatos, CA (US);
Richard L. Gray, Saratoga, CA (US);
Assignee:
Analog Microelectronics, Inc., Santa Clara, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 3/18 ;
U.S. Cl.
CPC ...
H02M 3/18 ;
Abstract
A charge pump system and method including a charge pump and a pulse width modulated (PWM) controller are provided. The charge pump includes a pump capacitor, a reservoir capacitor, and pump circuitry. During a first phase, the pump circuit couples the pump capacitor between a first supply voltage and a second supply voltage. During a second phase, the pump circuit couples the pump capacitor and the reservoir capacitor in series between the first supply voltage and an output terminal of the charge pump system. The PWM controller, which is coupled to the pump circuitry, determines the phase of the charge pump.