Dismiss
InnovationQ will be updated on Sunday, September 22, from 10am-noon ET. You may experience brief service interruptions during that time.
Browse Prior Art Database

VOLTAGE REGULATOR WITH ENHANCED PSRR PERFORMANCE

IP.com Disclosure Number: IPCOM000007518D
Publication Date: 2002-Apr-02
Document File: 5 page(s) / 88K

Publishing Venue

The IP.com Prior Art Database

Abstract

High power supply rejection ratios (PSRR) is one of the most important performance features of voltage regulators. Prior art voltage regulators obtained high PSRR using a two stage regulator comprised of a high PSRR band-gap (BG) reference and a high PSRR Output stage such as those of common art employing cascoded stages or high gain feedback loops. As a result, prior art voltage regulators suffered from overly complicated design that are difficult and costly to manufacture. The new voltage regulator is based on a new BG cell, which has line regulation "opposite" to the line regulation of the output stage which provides a BG block which has slightly decreasing output voltage with increasing input voltage. This novelty results in improved regulation and improved PSRR.