Fast Output Voltage-Regulated PWM Buck Converter With an Adaptive Ramp Amplitude Control

被引：41

作者：

Chang, Ji-Soo ^{[1
]}

Oh, Hyoung-Seok ^{[2
]}

Jun, Young-Hyun ^{[3
]}

Kong, Bai-Sun ^{[1
]}

机构：

[1] Sungkyunkwan Univ, Coll Informat & Commun Engn, Suwon 440746, South Korea

[2] Samsung Elect Co Ltd, Syst LSI Div, Yongin 449711, South Korea

[3] Samsung Elect Co Ltd, Memory Div, Hwasung 445701, South Korea

来源：

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS | 2013年 / 60卷 / 10期

基金：

新加坡国家研究基金会;

关键词：

Buck converter; compensation; fast load transient response; pulsewidth modulation (PWM); reference tracking; DC-DC-CONVERTERS; ERROR AMPLIFIER; ESR CAPACITOR;

D O I：

10.1109/TCSII.2013.2277986

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：

This brief presents a pulsewidth modulation buck converter with an adaptive ramp amplitude control. The proposed buck converter can improve the load transient response and the reference tracking speed. A chip was fabricated in a 0.18-mu m CMOS technology. Measurement results showed that the overshoot/undershoot at the output during the load transient period was reduced by up to 57% for a 450-mA load current step and that the reference tracking speed was improved by up to 71% for a 1.5-V output voltage change. The measured maximum power conversion efficiency was 92.6% at 3-MHz switching frequency when input and output voltages are 3.3 and 2 V, respectively.

引用

页码：712 / 716

页数：5

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