Two Types of Voltage-Boosting Converters Based on PWM Control Strategy.

Two simple voltage-boosting converters, based on charge pumps with one inductor inserted, are presented herein. Above all, by only changing the turn-on types for switches, without changing the circuit structure, there are two voltage conversion ratios to be generated easily. The proposed converters have individual simple operating analyses--if each converter operates in the continuous conduction mode (CCM), only two operating modes exist. Furthermore, the power switches used in each converter are easy to drive--only two half-bridge gate drivers and one low-side gate driver are needed and the voltage stress on the output diode can be reduced as compared to the traditional boost converter. In this paper, a brief illustration of basic operating principles of the proposed converters is firstly given, and secondly some experimental results are provided to demonstrate their effectiveness. [ABSTRACT FROM AUTHOR]