A Dual-mode Buck Converter with Dynamic Sawtooth Voltage for Wide Input Voltage Range Application

被引：1
作者：
Xie, Yafei [1 ,2 ,3 ]
Cai, Xiaowu [1 ,3 ]
Lu, Yu [1 ,2 ,3 ]
Pan, Longli [1 ,3 ]
Lu, Jian [1 ,3 ]
Wang, Lei [1 ,3 ]
Li, Bo [1 ,3 ]
机构：
[1] Chinese Acad Sci, Inst Microelect, Beijing 100029, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[3] Chinese Acad Sci, Key Lab Sci & Technol Silicon Devices, Beijing 100029, Peoples R China
来源：
IEICE ELECTRONICS EXPRESS | 2024年 / 21卷 / 12期
关键词：
Buck Convertor; Pulse Width Modulation (PWM); Pulse Skip Modulation (PSM); Wide Input Voltage Range; HIGH-EFFICIENCY; QUIESCENT-CURRENT; HIGH-FREQUENCY; MODULATION;
D O I：
10.1587/elex.21.20240148
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A dual -mode buck converter with dynamic sawtooth voltage is presented in this paper. The proposed design can handle loads from 10 mA to 1000 mA by utilizing PSM and PWM modes. Moreover, there is hysteresis during mode switching from PWM to PSM to avoid the control mode fluctuating. Dynamic sawtooth voltage is used to address the line transition issue over a wide input voltage range. Implemented in 0.25 mu m BCD technology, this converter can generate an output voltage of 5 V with an input voltage range of 10-55 V. The simulated results demonstrate the proper mode transition under stepup/down load current transient. The peak efficiency is 92.57% at 90 mA. The load regulation and line regulation are 1.07 mu V/mA and 15.2 mu V/V, respectively.
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页数：6
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