|Autors: Brusev, T. S., Kunov, G. T., Gadjeva, E. D.|
Title: PWM and PFM Controlled Buck Converter designed for Wearable Electronic Devices
Keywords: Buck converters, Pulse-Width Modulation (PWM), Pulse-Frequen
Abstract: Integrated Pulse-Width Modulation (PWM) and Pulse-Frequency Modulation (PFM) controlled buck converter is proposed in this paper, designed for wearable electronic devices. The input voltage is equal to 3.6V and the average value of the output voltage is regulated to be 1.7V. The maximum efficiency η of the buck converter is 81.43%, when the load current ILoad is equal to 68mA. When ILoad is smaller than 8mA the efficiency of the PFM controlled buck converter is around 7% higher compared to the efficiency of the PWM controlled buck converter.
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