標題: | Challenge on compact size DC-DC buck converters with high-speed current sensor and on-chip inductors |
作者: | Chen, Shih-Min Hsieh, Chun-Yu Chen, Ke-Horng 電控工程研究所 Institute of Electrical and Control Engineering |
公開日期: | 2007 |
摘要: | This paper proposes a compact size DC-DC buck converter toward on-chip inductors and minimized external components. Multi-phase, high switching frequency and pseudo continuous conduction mode (PCCM) techniques [1] achieve the possibility to implement on-chip inductors. The effective inductance is about 20nH. Due to high switching frequency above 20MHz, it is a challenge to have a highly accurate current sense for high performance of converters. Simulation results demonstrate that the accuracy of high-speed current sensor is about 95%. Besides, mode switch between pulse width modulation (PWM) and pulse frequency modulation (PFM) alleviates the limitation of high-speed current sensor in case of light load condition. Compact size design of converter is an advanced technique as a power module for system-on-chip (SOC) designs. |
URI: | http://hdl.handle.net/11536/6634 |
ISBN: | 978-1-4244-1175-7 |
ISSN: | 1548-3746 |
期刊: | 2007 50TH MIDWEST SYMPOSIUM ON CIRCUITS AND SYSTEMS, VOLS 1-3 |
起始頁: | 556 |
結束頁: | 559 |
顯示於類別: | 會議論文 |