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CONTINUOUS CONDUCTION MODE HIGH POWER FACTOR BOOST RECTIFIERS USING A CONTROLLED COMPENSATING RAMP

IP.com Disclosure Number: IPCOM000008873D
Original Publication Date: 1998-Sep-01
Included in the Prior Art Database: 2002-Jul-19

Publishing Venue

Motorola

Related People

Authors:
Joel P. Gegner

Abstract

A Simplified Power Factor Correction (PFC) technique for Continuous Conduction Mode (CCM) operated converters is presented which has the fol- lowing advantages over conventional peak and average current mode PFC techniques: Elimination of the controller multiplier and input voltage sens- ing circuits, unconditional stability of the current loop, and ease of implementations using low cost standard PWM control [C's (e.g. UC2843). Simulation and experimental results will verify the viability of the new controller: current rather than the switch current, resulting in high power dissipation in the sensing resistor.