Title :
Dual Mode Control Multiphase DC/DC Converter for CPU Power
Author :
Lin, Li-Wei ; Chang, Chung-Hsing ; Chiu, Huang-Jen ; Mou, Shann-Chyi
Author_Institution :
Dept. of Electr. Eng., Chung Yuan Christian Univ., Chung-li
Abstract :
High performance voltage-regulator-modules (VRMs) for the new generation of microprocessors have many strict and challenging specifications that include high power-density, high output-current capability, low output-voltage deviation and fast transient-response. In this paper, a dual mode control multiphase DC/DC converter is presented. The proposed scheme combines voltage and hysteretic control modes and has the merits of high efficiency, simple control and fast transient response. It can be also used for single-phase and built in integrated circuit without additional cost and space. The operating principles and design considerations are analyzed and discussed in detail. A 1.3 V/80 A four-phase laboratory prototype was simulated and implemented to verify the feasibility of the proposed scheme. The results are satisfactory
Keywords :
DC-DC power convertors; computer power supplies; hysteresis; integrated circuits; transient response; voltage control; 1.3 V; 80 A; CPU power; built in integrated circuit; dual mode control; hysteretic control modes; microprocessors; multiphase DC-DC converter; single-phase integrated circuit; transient response; voltage control modes; voltage-regulator-modules; Circuit simulation; Costs; DC-DC power converters; Hysteresis; Laboratories; Microprocessors; Power generation; Transient response; Virtual prototyping; Voltage control; Dual Mode Control; Multiphase DC/DC Converter; Voltage Regulator Module;
Conference_Titel :
Power Electronics and Motion Control Conference, 2006. IPEMC 2006. CES/IEEE 5th International
Conference_Location :
Shanghai
Print_ISBN :
1-4244-0448-7
DOI :
10.1109/IPEMC.2006.4777993
