Regulation Mechanism for Dickson Charge Pumps Using Charge Recycling and Adiabatic Charging

Abstract

Integrated charge pumps optimized for driving resistive loads are usually using a feedback control loop for improving the power efficiency over the entire specified load range. We propose a new circuit topology that combines charge recycling with a feedback control loop based on a regulated clock buffer supply that is also capable of adiabatic charging. The clock buffer supply regulation, as well as the adiabatic charging mechanism are both employed via a single on-chip fast transient response voltage regulator.