Patent · US Active

Voltage regulator soft-start circuit providing reference voltage ramp-up

US8704506B2 · kind B2 · utility

4Cited by

7References

20Claims

0Family size

Assignee

LSI · US

Inventors

Ronald J. Lipka · Northborough, US
Bradley Wright · Fort Collins, US

Key dates

Filing date	Dec 20, 2010
Grant date	Apr 22, 2014
Priority date	—
Expiry date	Mar 15, 2032

Classification

Technology area (CPC G)Physics
CPC primaryG05F1/56
WIPO fieldControl
WIPO sectorInstruments

Abstract

An improved start-up (soft-start) circuit for use with voltage regulators, and an improved regulator start-up methodology. For example, an apparatus includes a voltage regulator circuit and a start-up circuit operatively coupled to the voltage regulator circuit. The start-up circuit is configured to provide a current signal, during a start-up period, that generates a reference voltage at a reference input of the voltage regulator circuit such that the reference voltage ramps up at a rate substantially equal to a ramp-up rate of a supply voltage coupled to the start-up circuit and the voltage regulator circuit.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.