Hysteresis controller with constant switching frequency

被引：46

作者：

Poulsen, S ^{[1
]}

Andersen, MAE

机构：

[1] Texas Instruments Damark AS, DK-2800 Lyngby, Denmark

[2] Tech Univ Denmark, Orsted DTU, DK-2800 Lyngby, Denmark

来源：

IEEE TRANSACTIONS ON CONSUMER ELECTRONICS | 2005年 / 51卷 / 02期

关键词：

hysteresis; switched mode power supplies; modulation; switching amplifiers;

D O I：

10.1109/TCE.2005.1468020

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：

Switch mode audio power amplifiers are showing up on market in still greater numbers because of advantages in form of high efficiency and low total system cost, especially for high power amplifiers. Several different modulator topologies have been made, ranging from standard PWM to various self-oscillating and digital modulators. Performance in terms of low distortion, noise and dynamic range differs significantly with the modulator topology used. Highest system performance is generally achieved with analog modulators made as a modulator loop including at least the power stage of the amplifier, because of benefits from continuous time operation and non-quantized resolution. This type of modulator uses no external carrier signal, and is called self-oscillating modulators. The work presented in this paper refers to switch mode audio power amplifier, but can be used within a wide range of DC-DC or DC-AC converters as well.

引用

页码：688 / 693

页数：6