A switched-capacitor Dickson charge pumps for high-voltage high power applications

摘要

This paper presents a switched-capacitor charge pumps circuit base on a Dickson charge pumps that focus on a power scale more than 10W and voltage above 100V. This research replaces a Dickson's digital switches with a full-bridge power MosFets switches in order to achieve an expected power. A 16 stages 50 kHz 330V output voltage unregulated Dickson charge pumps from 20V input was designed and tested to supply the power under 100mA pure resistive load condition. From experimental results, voltage conversion efficiency and voltage regulation are 44.5% and 21.3% respectively. Although the voltage is not as good as it should at full load because it was not regulate an output voltage, but it is the one that can be applied a Dickson charge pumps circuit to a high-voltage high power applications.