Monolithic DC-DC Converter Analysis And Mosfet Gate Voltage Optimization

— The design of an efficient monolithic buck converter is presented in this paper. A low swing MOSFET gate drive technique is proposed that improves the efficiency characteristics of a DC-DC converter. A model of the parasitic impedances of a buck converter is developed. With this model, a design space is described which characterizes the integration of both active and passive devices of a buck converter onto the same die based on a 0.18 µm CMOS technology. The optimum gate voltage swing of a power MOSFET that maximizes efficiency is shown to be lower than a standard full voltage swing. An efficiency of 88% at a switching frequency of 102 MHz is achieved for a voltage conversion

• Type: Conference
• Year: 2003
• Where: ISQED
• Authors: Volkan Kursun, Siva Narendra, Vivek De, Eby G. Friedman
• Keywords: Buck Converter, Hardware, ISQED 2003, Monolithic Buck Converter, Swing Mosfet Gate