Title:
METHOD AND APPARATUS FOR DIGITAL VOLTAGE REGULATION
Document Type and Number:
WIPO Patent Application WO2000026740
Kind Code:
A8
Abstract:
A digital voltage regulator has an input terminal (20) coupled to an input voltage source (12), an output terminal (22) coupled to a load (14), and a plurality of switching circuits (24) to alternately couple and decouple the input terminal (20) to the output terminal (22). An estimated current is calculated for each switching circuit (24), each estimated current representing a current passing through an inductor (34) associated with the switching circuit (24). A total desired output current to pass throught the inductor (34) is calculated which will maintain an output voltage at the output terminal (22) substantially constant. The switching circuits (24) are controlled based on the estimated current and the total desired output current so that a total current passing through the inductor (34) is approximately equal to the total desired output current.
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Inventors:
BURNSTEIN ANDREW J
SCHULTZ AARON M
CHRISTENSON MICHAEL
LIDSKY DAVID B
STRATAKOS ANTHONY
SULLIVAN CHARLIE
CLARK WILLIAM
SCHULTZ AARON M
CHRISTENSON MICHAEL
LIDSKY DAVID B
STRATAKOS ANTHONY
SULLIVAN CHARLIE
CLARK WILLIAM
Application Number:
PCT/US1999/025720
Publication Date:
June 15, 2000
Filing Date:
November 01, 1999
Export Citation:
Assignee:
VOLTERRA SEMICONDUCTOR CORP (US)
International Classes:
H02M3/155; H02M3/157; H02M3/158; (IPC1-7): G05F1/10; G05F1/40
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