Abstract

A multiphase DC/DC converter with voltage-mode hysteretic control and instantaneous current sharing functionality method and circuit. The disclosed method and circuit provides independent output voltage regulation and phases current regulation for the converter in two separate loops; one of which is concerned with voltage regulation preferably hysteretic regulation and the other which is concerned with phase current regulation. In one embodiment, each phase in the DC/DC converter is driven by a frequency divided signal derived directly from the output voltage ripple so that each phase has a switching frequency equal to the output voltage ripple frequency divided by the number of paralleled phase. In another embodiment, only the phase that carries the smallest current among a set of phrases will be turned ON in each switching cycle to supply power to the output, avoiding multiple switching. Current sharing and regulation is achieved without shortening the ON time and with no multiple s

Document Type

Patent

Patent Number

US 6,628,106

Application Serial Number

10/206,565

Issue Date

9-30-2003

Current Assignee

UCFRF

Assignee at Issuance

UCFRF

College

College of Engineering and Computer Science (CECS)

Department

Electrical Engineering & Computer Science - CS Division

Allowance Date

7-2-2003

Filing Date

7-26-2002

Assignee at Filing

UCFRF

Filing Type

Nonprovisional Application Record

Donated

no

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