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:
Feb. 20, 2007
Filed:
Mar. 16, 2006
Anthonius Bakker, Morgan Hill, CA (US);
Anthonius Bakker, Morgan Hill, CA (US);
Analog Devices, Inc., Norwood, MA (US);
Abstract
A multi-path digital power supply controller includes a first ADC (ADC1) coupled to the supply's output voltage Vand arranged to provide an output which varies with V's low frequency components, and a second ADC (ADC2) coupled to Vand arranged to provide an output which varies with V's high frequency components. A digital reference value is subtracted from the output of ADC1 to produce a low frequency digital error signal, and a summing circuit sums the low frequency digital error signal and the output of ADC2. Processing circuitry is arranged to produce an output which varies with the summed signal and is suitable for coupling to a power stage for use in regulating V. Preferably, ADC1 is a low-bandwidth high-resolution ADC and ADC2 is a high-bandwidth low-resolution ADC, both of which are low-cost components.