摘要
An optimum power metal-oxide-semiconductor field effect transistor (MOSFET) width technique is proposed for enhancing the efficiency characteristics of switching DC-DC converters. By implementing a one-cycle buck DC-DC converter, it is demonstrated that the dynamic power MOSFET width controlling technique has a much improved power reduction whether the load current is light or heavy. The maximum efficiency of the buck converter is ∼92 with a 3 efficiency improvement for the heavy load condition. The efficiency is further improved by ∼16 for the light load condition as a result of the power reduction from the large power MOSFET transistors. Also proposed is a new error-correction loop circuit to enable a better load regulation than that of previous designs. Compared with the adaptive gate driver voltage technique, the optimum power MOSFET width can achieve a significant improvement in power saving. It is also superior to the low-voltage-swing MOSFET gate drive technique for switching DC-DC converters.
| 原文 | English |
|---|---|
| 頁（從 - 到） | 57-62 |
| 頁數 | 6 |
| 期刊 | IET Circuits, Devices and Systems |
| 卷 | 1 |
| 發行號 | 1 |
| DOIs | |
| 出版狀態 | Published - 19 四月 2007 |