Title :
Off-time prediction in digital constant on-time modulation for DC-DC converters
Author :
Kong, Na ; Ha, Dong Sam ; Li, Jian ; Lee, Fred C.
Author_Institution :
Bradley Dept. of Electr. & Comput. Eng., State Univ. Blacksburg, Blacksburg, VA
Abstract :
This paper proposes a digital constant on-time control method for high switching frequency DC-DC buck converter, which eliminates the need for high resolution digital pulse-width modulator (DPWM) compared to constant frequency control. Both simulation and experimental results demonstrate performance improvement through the proposed off-time prediction method in terms of the oscillation amplitude of the output voltage.
Keywords :
DC-DC power convertors; circuit switching; DC-DC buck converter; digital constant on-time modulation; off-time prediction; switching frequency; Buck converters; DC-DC power converters; Digital control; Digital modulation; Frequency control; Prediction methods; Predictive models; Pulse modulation; Pulse width modulation converters; Switching frequency;
Conference_Titel :
Circuits and Systems, 2008. ISCAS 2008. IEEE International Symposium on
Conference_Location :
Seattle, WA
Print_ISBN :
978-1-4244-1683-7
Electronic_ISBN :
978-1-4244-1684-4
DOI :
10.1109/ISCAS.2008.4542156
