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:
Dec. 29, 2009
Filed:
Oct. 27, 2005
Hidenori Kobayashi, Kanagawa-ken, JP;
Hidenori Kobayashi, Kanagawa-ken, JP;
National Semiconductor Corporation, Santa Clara, CA (US);
Abstract
A system and method are disclosed for providing switch size management in a direct current to direct current (DC-DC) converter circuit for a radio frequency (RF) power amplifier. An output voltage reference signal is provided to a DC-DC converter that comprises a first switch circuit and a second switch circuit. The output voltage reference signal is compared to a threshold voltage. If the output voltage reference signal is lower than the threshold voltage, control circuitry selects a first switch size. If the output voltage reference signal is higher than the threshold voltage, then the control circuitry selects a second switch size. Selecting an appropriate switch size improves the operating efficiency of the DC-DC converter.