Title :
An exponential-folds design of a charge pump styled DC/DC converter
Author :
Chang, Lon-Kou ; Hu, Chih-Huei
Author_Institution :
Dept. of Electr. & Control Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan
Abstract :
A charge pump styled DC/DC converter utilizing the exponential-folds structure and the pumping gain increase (PCI) circuit with high voltage transfer efficiency is proposed in this paper. A PGI circuit used in the linear DC/DC converter is proposed to solve the threshold voltage problem and limitation of the diode-configured output stage so that the boosted output voltage increases more linearly versus the pumping stage number. With the exponential-folds structure, fewer voltage pump stages are needed to obtain the higher output voltage and further improve the voltage pumping gain. Especially, this design still has good efficiency with low input supply voltage such as one battery cell.
Keywords :
DC-DC power convertors; power semiconductor diodes; CPC; DC-DC converter; PGI; battery cell; charge pump circuit; diode-configuration; exponential-folds design; pumping gain increase; threshold voltage; voltage pumping gain; voltage transfer efficiency; Batteries; Charge pumps; Charge transfer; Costs; DC-DC power converters; Degradation; Low voltage; Switches; Switching circuits; Threshold voltage;
Conference_Titel :
Power Electronics Specialists Conference, 2004. PESC 04. 2004 IEEE 35th Annual
Print_ISBN :
0-7803-8399-0
DOI :
10.1109/PESC.2004.1355800
