Steady-State Characteristics of Resonant Switched Capacitor Converters


Vol. 5, No. 3, pp. 206-211, Jul. 2005
10.6113/JPE.2005.5.3.206


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 Abstract

Conventional switched capacitor converters have an inherent drawback that their efficiency decreases as the output current increases. This inherent drawback is due to a periodical forced charging and discharging operation in the internal switched capacitors accompanied by a large capacitor current. Their efficiency can not be increased by decreasing its internal resistance. As a result, conventional switched capacitor converters have been limited to uses with a very small output current. To solve this problem we presented a novel switched capacitor converter topology that uses a resonant operation instead of the forced charging and discharging operation. Its advantage over a conventional switched capacitor converter is higher efficiency even in a high output current region. In this paper, the operation analysis and steady-state characteristics are described in detail for a half buck type switched capacitor converter, and they are confirmed by experimentation.


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Cite this article

[IEEE Style]

M. Shoyama, F. Deriha, T. Ninomiya, "Steady-State Characteristics of Resonant Switched Capacitor Converters," Journal of Power Electronics, vol. 5, no. 3, pp. 206-211, 2005. DOI: 10.6113/JPE.2005.5.3.206.

[ACM Style]

Masahito Shoyama, Fumitoshi Deriha, and Tamotsu Ninomiya. 2005. Steady-State Characteristics of Resonant Switched Capacitor Converters. Journal of Power Electronics, 5, 3, (2005), 206-211. DOI: 10.6113/JPE.2005.5.3.206.