Title :
Multiphase voltage regulator module with transient step changing phases
Author :
Capponi, G. ; Librizzi, F. ; Scalia, P.
Author_Institution :
Dept. of Electron. Eng., Palermo Univ.
Abstract :
The paper presents a new method to control multiphase DC-DC converters for supplying new generation microprocessors (VRM) requiring higher currents at lower voltages. These requirements are achieved by paralleling converter modules, and phase-shifting their drive signals (interleaving technique). The proposed technique controls the turn-on of each phase in order to reduce overshoot and undershoot of the output regulated voltage improving the performances of interleaving technique in transient current changes
Keywords :
DC-DC power convertors; computer power supplies; phase shifters; voltage control; voltage regulators; 1.5 V; 5 V; 60 A; converter modules paralleling; drive signals phase shifting; interleaving technique; microprocessors; multiphase DC-DC converters control; multiphase voltage regulator module; output regulated voltage; overshoot reduction; transient step changing phases; turn-on control; undershoot reduction; Buck converters; Capacitors; Control systems; Delay; Inductors; Interleaved codes; Microprocessors; Regulators; Steady-state; Voltage control;
Conference_Titel :
Power System Technology, 2000. Proceedings. PowerCon 2000. International Conference on
Conference_Location :
Perth, WA
Print_ISBN :
0-7803-6338-8
DOI :
10.1109/ICPST.2000.900101
