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:
Apr. 13, 2010
Filed:
May. 02, 2008
Dimitry Goder, San Jose, CA (US);
Zongqi HU, Milpitas, CA (US);
Kendra Nguyen, San Jose, CA (US);
Exar Corporation, Fremont, CA (US);
Abstract
A switching voltage regulator includes, in part, N output stages, a loop ADC, a multiplexer, a current ADC, and an interrupt block. The loop analog-to-digital converter receives the N output voltages each of which is associated with one of N channels. The loop ADC is adapted to vary a duty cycle of N signals each applied to one of the N output stages that generate the N output voltages. The interrupt block is adapted to enable the multiplexer to couple an output stage to the current ADC if a difference between voltages sensed at an output stage during at least two sampling times exceeds a predefined threshold value. The interrupt block may also be adapted to enable the multiplexer to couple an output stage to the current ADC block if a difference between a voltage sensed at the output stage and a reference voltage exceeds a predefined threshold value.