Title :
Multi-Phase Converter Controlled by Hysteretic PWM Method
Author :
Sato, T. ; Nabeshima, T. ; Nishijima, K. ; Nakano, T.
Author_Institution :
Oita Univ., Oita
Abstract :
A multi-phase dc-to-dc converter controlled by hysteretic PWM method is presented in this paper. An and-gated logic circuit is employed for the synchronization and its operating principle is described. A 5 V to 1.5 V prototype buck converter of two-phase is implemented for a POL power supply. From the experiments, it is confirmed that the proposed method can be well synchronized, and an excellent dynamic performance is archived for the large load current transients. In addition, improved power efficiency and a good current sharing characteristic is derived.
Keywords :
DC-DC power convertors; PWM power convertors; logic circuits; and-gated logic circuit; dc-to-dc converter; hysteretic PWM method; large load current transients; multiphase converter control; prototype buck converter; Buck converters; Circuits; DC-DC power converters; Frequency synchronization; Hysteresis; Power supplies; Pulse width modulation; Pulse width modulation converters; Switches; Threshold voltage; dc-to-dc converter; hysteretic PWM control; multi-phase; transient response;
Conference_Titel :
Power Conversion Conference - Nagoya, 2007. PCC '07
Conference_Location :
Nagoya
Print_ISBN :
1-4244-0844-X
Electronic_ISBN :
1-4244-0844-X
DOI :
10.1109/PCCON.2007.373108
