High Pumping Gain Dickson Charge Pump Using Improved Bootstrapped Technique

Abstract:

This paper proposed an improved bootstrapped type high-efficient charge pump circuit based on the Dickson charge pump in order to get a higher pumping efficiency. It is not only avoid the threshold voltage drop in conventional Dickson charge pump circuits but enable them to generate a higher output voltage. Simulation by HSPICE shows that for conventional Dickson charge pump, it convert the input low DC-voltage (V_in=1.5V) up to 3.8 times of it (V_OUT=5.77V), the pump efficiency was 76.93%. Our work, however, can convert the low input DC-voltage (V_in=1.5V) up near to 4.76 times of it (V_OUT=7.14V), the pump efficiency can reaches as high as 95.2%.

• Periodical: Applied Mechanics and Materials (Volumes 764-765)
• Pages: 506-510
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.764-765.506
• Online since: May 2015
• Authors: Yung Chin Chen*
• Keywords: Bootstrapped, Charge Pump, Dc-Dc Converter

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