Title: DC-DC Converter with PWM/PFM Automatic Switching
Abstract: We present an efficient CMOS DC-DC converter with automatic PWM/PFM switching,which can automatically switch between pulse width modulation(PWM) and pulse frequency modulation(PFM) modes according to the load variation.An expression of the load current at the threshold of automatic switching is derived.A simulated system works properly,achieving automatic PWM/PFM switching and high efficiency over a wide ranged of varied load.
Publication Year: 2007
Publication Date: 2007-01-01
Language: en
Type: article
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