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| 具有动态模式控制和斜波补偿的宽负载、多模式同步降压DC-DC转换器 | |
| 引用本文： | 张春红,杨海钢,史传进.具有动态模式控制和斜波补偿的宽负载、多模式同步降压DC-DC转换器[J].半导体学报,2013,34(6):065003-8. |
| 作者姓名： | 张春红 杨海钢 史传进 |
| 作者单位： | Institute of Electronics,Chinese Academy of Sciences;University of Chinese Academy of Sciences;Silicon System Research Laboratory,Department of Electronic Engineering,210EE/CES Building,Box 352500,University of Washington Seattle |
| 基金项目： | supported by the Major National Scientific Research Plan,China(No.201 1CB933202);the CAS/SAFEA International Partnership Program for Creative Research Teams |
| 摘 要： | A synchronous buck DC-DC converter with an adaptive multi-mode controller is proposed.In order to achieve high efficiency over its entire load range,pulse-width modulation(PWM),pulse-skip modulation(PSM) and pulse-frequency modulation(PFM) modes were integrated in the proposed DC-DC converter.With a highly accurate current sensor and a dynamic mode controller on chip,the converter can dynamically change among PWM, PSM and PFM control according to the load requirements.In addition,to avoid power device damage caused by inrush current at the start up state,a soft-start circuit is presented to suppress the inrush current.Furthermore,an adaptive slope compensation(SC) technique is proposed to stabilize the current programmed PWM controller for duty cycle passes over 50%,and improve the degraded load capability due to traditional slope compensation.The buck converter chip was simulated and manufactured under a 0.35μm standard CMOS process.Experimental results show that the chip can achieve 79%to 91%efficiency over the load range of 0.1 to 1000 mA. |
| 关 键 词： | DC-DC multi-mode peak current mode slope compensation soft-start |
| 修稿时间： | 1/9/2013 3:02:09 AM |
A wide load range, multi-mode synchronous buck DC-DC converter with a dynamic mode controller and adaptive slope compensation |
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| Zhang Chunhong,Yang Haigang and Richard Shi.A wide load range, multi-mode synchronous buck DC-DC converter with a dynamic mode controller and adaptive slope compensation[J].Chinese Journal of Semiconductors,2013,34(6):065003-8. | |
| Authors: | Zhang Chunhong Yang Haigang and Richard Shi |
| Affiliation: | 1. Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China;University of Chinese Academy of Sciences, Beijing 100039, China 2. Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China 3. Silicon System Research Laboratory, Department of Electronic Engineering, 210EE/CES Building, Box 352500,University of Washington Seattle, WA9815, USA |
| Abstract: | |
| Keywords: | DC-DC multi-mode peak current mode slope compensation soft-start |
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