Design and realization of a switched-capacitor AC-DC converter with a low output-voltage ripple

An AC-DC converter using a new switched-capacitor (SC) transformer and its design are presented. The maximum voltage of capacitors is 1/n times that of a capacitor- input-type rectifier circuit, where n is the number of charge-transfer capacitors. The output voltage ripple is small, since the equiva...

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Bibliographic Details
Main Authors: Ueno, F., Inoue, T., Oota, I., Lian, H.B.
Format: Conference Proceeding
Language:English
Subjects:
AC-DC power converters
Circuit testing
Clocks
DC-DC power converters
Material storage
Power supplies
Regulators
Smoothing methods
Switched capacitor circuits
Switches
Online Access:Request full text
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Summary:An AC-DC converter using a new switched-capacitor (SC) transformer and its design are presented. The maximum voltage of capacitors is 1/n times that of a capacitor- input-type rectifier circuit, where n is the number of charge-transfer capacitors. The output voltage ripple is small, since the equivalent smoothing capacitor value is n times that of conventional SC transformers (series-parallel switching type). Using the design method presented, a test circuit was designed. The experimental results of the test circuit show that the efficiency of the SC transformer is very high (95%) and the maximum output power is 40 W.< >
DOI:10.1109/MWSCAS.1990.140914