Title :
12V VR Efficiency Improvement based on Two-stage Approach and a Novel Gate Driver
Author :
Ren, Yuancheng ; Xu, Ming ; Meng, Yu ; Lee, Fred C.
Author_Institution :
Center for Power Electron. Syst., Virginia Polytech Inst. & State Univ., Blacksburg, VA
Abstract :
High frequency VR is demanded to meet future microprocessor´s requirements. However, the high switching loss and body diode loss suffer the efficiency of VR. Based on two-stage approach, the snubber capacitor paralleled with the top switch is proposed to reduce the switching loss. And a new gate driver is proposed to reduce body diode loss and gate drive loss. The experiment verified these methods
Keywords :
driver circuits; microprocessor chips; power capacitors; snubbers; 12 V; body diode loss; gate driver loss; microprocessor requirements; snubber capacitor; switching loss reduction; two-stage approach; Buck converters; Capacitors; Diodes; Driver circuits; Snubbers; Switches; Switching frequency; Switching loss; Virtual reality; Voltage;
Conference_Titel :
Power Electronics Specialists Conference, 2005. PESC '05. IEEE 36th
Conference_Location :
Recife
Print_ISBN :
0-7803-9033-4
DOI :
10.1109/PESC.2005.1582005
