Title :
A self-scaling gate drive technique for efficiency improvement of DC-DC converters
Author :
Liu, Pang-Jung ; Chen, Vi-Jan Emery
Author_Institution :
Grad. Inst. of Electron. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
This paper shows that the optimal driving voltages of power MOSFETs can be well modeled by a linear function of the load current. Thanks to the linear model, the self-scaling gate drive technique is proposed to improve the light-load efficiency of DC-DC converters by reducing gate driving loss. The gate drive voltage is scaled dynamically with respect to load current change. The proposed self-scaling gate drive technique can attain about 5.8% incremental enhancement on light-load efficiency.
Keywords :
DC-DC power convertors; power MOSFET; DC-DC converters; linear function; load current; optimal driving voltages; power MOSFET; self-scaling gate drive technique; Batteries; DC-DC power converters; Driver circuits; Industrial electronics; MOSFETs; Personal digital assistants; Power engineering and energy; Pulse width modulation; Switching frequency; Voltage;
Conference_Titel :
Industrial Electronics, 2009. ISIE 2009. IEEE International Symposium on
Conference_Location :
Seoul
Print_ISBN :
978-1-4244-4347-5
Electronic_ISBN :
978-1-4244-4349-9
DOI :
10.1109/ISIE.2009.5213756
