High-performance error amplifier for fast transient DC-DC converters

被引：61

作者：

Roh, J ^{[1
]}

机构：

[1] Hanyang Univ, Dept Elect & Comp Engn, Ansan 426791, South Korea

来源：

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS | 2005年 / 52卷 / 09期

关键词：

boost converter; dc-dc converter; error amplifier; operational transconductance amplifier (OTA); pulsewidth modulation (PWM); transient response;

D O I：

10.1109/TCSII.2005.850521

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 new error amplifier is presented for fast transient response of dc-dc converters. The amplifier has low quiescent current to achieve high power conversion efficiency, but it can supply sufficient current during large-signal operation. Two comparators detect large-signal variations, and turn on extra current supplier if necessary. The amount of extra current is well controlled, so that the system stability can be guaranteed in various operating conditions. The simulation results show that the new error amplifier achieves significant improvement in transient response than the conventional one.

引用

页码：591 / 595

页数：5

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