High-Efficiency CTS Charge Pump Using Three-Level Addressing Method

Abstract:

This paper proposes a new addressing method for high-efficiency switching-capacitor DC-DC voltage converter based on combination of CTS (charge-transfer-switch) charge pump and cross-coupled output stage is proposed in order to get a high output power and pump-efficiency. By using three level addressing methods, it can increase both of pump-efficiency and power-efficiency. The proposed three level addressing mixed-structure charge pump can operate at as high as 1MHz switching-frequency on the 0.1 μF pump-capacitors. Simulation by using HSPICE level 3 model shows that our work can convert the input low DC-voltage (V_in=1.5V) up near to 11.26 times of it (V_OUT=16.9V), so that more output power can be generated with a little power loss. The newly proposed addressing method for DC-DC charge pump circuit is suitable for various low-voltage applications.

• Periodical: Applied Mechanics and Materials (Volume 145)
• Pages: 562-566
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.145.562
• Online since: December 2011
• Authors: Yung Chin Chen, Kun Long Zheng, Zong Ye Wu, Kai Wei Chang, Chie Nan Lai
• Keywords: Charge Pump, Converter, HSPICE

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