Title :
An integrated controller for a high frequency buck converter
Author :
Lau, Wai ; Sanders, Seth R.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., California Univ., Berkeley, CA, USA
Abstract :
This paper reports on the design, fabrication, and test of a controller IC for a buck converter, designed to operate with synchronous rectification in a constant off-time, variable frequency mode. This mode is advantageous to support soft-switching over a wide input voltage range. Operation up to 5 MHz allows potential use with a microfabricated inductor. Considerable attention is paid to the control of deadtimes. Specifically, the adaptive deadtime control scheme proposed in our earlier work was successfully implemented and tested
Keywords :
DC-DC power convertors; adaptive control; control system synthesis; controllers; integrated circuits; power convertors; rectification; switching circuits; adaptive deadtime control scheme; constant off-time variable frequency mode; controller IC; design; fabrication; high frequency buck converter; integrated controller; microfabricated inductor; soft-switching; synchronous rectification; wide input voltage range; Buck converters; Circuit testing; Frequency conversion; Inductors; Integrated circuit testing; Inverters; Switching converters; Switching frequency; Switching loss; Zero voltage switching;
Conference_Titel :
Power Electronics Specialists Conference, 1997. PESC '97 Record., 28th Annual IEEE
Conference_Location :
St. Louis, MO
Print_ISBN :
0-7803-3840-5
DOI :
10.1109/PESC.1997.616733
