Title :
Digital control scheme for robust clock tuning and PWM phase synchronization in digitally controlled multi-POL applications
Author :
O´Malley, Eamon ; Rinne, Karl ; Kelly, Anthony ; Almukhtar, Basil ; Kelleher, Paul
Author_Institution :
Powervation Ltd., Limerick, Ireland
Abstract :
This paper describes a novel clock tuning and subsequent PWM phase synchronization scheme for digitally controlled switching power converters. Its architecture and circuit blocks are presented and explained in detail. The scheme has been implemented in a commercially available digital controller integrated circuit (IC) using a standard CMOS process. Experimental results from a multi point-of-load (POL) application are presented.
Keywords :
CMOS digital integrated circuits; DC-DC power convertors; PWM power convertors; circuit tuning; clocks; digital control; switching convertors; synchronisation; CMOS process; DC-DC POL conversion; PWM phase synchronization; digital controller integrated circuit; digitally controlled multiPOL; digitally controlled switching power converters; multi point-of-load; robust clock tuning; CMOS digital integrated circuits; CMOS integrated circuits; Circuit optimization; Clocks; Digital control; Pulse width modulation; Pulse width modulation converters; Robust control; Switching converters; Synchronization;
Conference_Titel :
Applied Power Electronics Conference and Exposition (APEC), 2010 Twenty-Fifth Annual IEEE
Conference_Location :
Palm Springs, CA
Print_ISBN :
978-1-4244-4782-4
Electronic_ISBN :
1048-2334
DOI :
10.1109/APEC.2010.5433497
