Jitkasame Ngarmnil

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A new structure of comparator circuit based on a pair of complementary floating-gate (FG) MOS transistors is introduced in this paper. Our main design purpose is to focus on low complexity structure and low operating supply voltage. The comparator comprises two stage amplifiers: differential input stage and gain stage. Simulation results from Hspice on(More)
This paper describes design of rectangular wave delta modulation (RWDM) buck regulator. It has simple and compact structure, then consuming less chip area. Hence, it is suitable for implementation in portable applications. Variable frequency operation is used to obtain low loss. The proposed regulator was implemented on a breadboard to verify the concept.(More)
This paper describes design of rectangular wave delta modulation (RWDM) buck regulator for voltage regulator modules (VRM). This regulator does not require clock generator as PWM regulators do. It has simple and compact circuit; it consumes less chip area. Hence, it is suitable for VRM application. The proposed regulator was simulated by HSpice simulation(More)
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