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