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Design of Charge Pump Circuit for Floating Gate Power Supply of Intelligent Power Module  

Lim, Jeong-Gyu (경상대 제어계측공학과)
Chung, Se-Kyo (경상대 전기전자공학부)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.13, no.2, 2008 , pp. 135-144 More about this Journal
Abstract
A bootstrap circuit is widely used for the floating gate power supply of Intelligent power module (IPM). A bootstrap circuit is simple and inexpensive. However, the duty cycle and on-time are limited by the requirement to refresh the charge in the bootstrap capacitor. And the value of the bootstrap capacitor should be increased as the switching frequency decreases. A charge pump circuit can be used to overcome the problems. This paper deals with an analysis and design of a charge pump circuit for the floating gate power supply of an IPM. The simulation and experiment are carried out for an induction motor drive system. The results well verifies the validity of the proposed circuit and design method.
Keywords
Floating gate power supply; Charge pump circuit; Bootstrap circuit; Intelligent power module;
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  • Reference
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