| 可用于音频功放的过温保护电路设计 |
| |
| 引用本文： | 覃贤芳,唐宁,杨盛波. 可用于音频功放的过温保护电路设计[J]. 电子科技, 2009, 22(10): 7-9,35 |
| |
| 作者姓名： | 覃贤芳 唐宁 杨盛波 |
| |
| 作者单位： | 桂林电子科技大学,信息与通信学院,广西,桂林,541004;桂林电子科技大学,信息与通信学院,广西,桂林,541004;桂林电子科技大学,信息与通信学院,广西,桂林,541004 |
| |
| 摘 要： | 在分析温度对集成电路芯片工作可靠性、安全性影响的基础上,利用与温度成正比的PTAT电流和负温度系数的PN结电压,设计了一种低功耗的过温保护电路.该电路结构简单、工艺兼容性好、具有良好的移植性,可以应用于音频功放及各类集成电路芯片中.同时该电路还具有温度的迟滞特性,可以更好地保护芯片,避免振荡的产生.0.35 μm Cadence Specture仿真结果表明,该电路功耗低且可以实现高精度的过温保护功能.
|
| 关 键 词： | 热保护 PTAT电流 CMOS工艺 迟滞特性 |
Design of a Thermal-shutdown Circuit for the Audio Operational Amplifier |
| |
| Qin Xianfang,Tang Ning,Yang Shengbo. Design of a Thermal-shutdown Circuit for the Audio Operational Amplifier[J]. Electronic Science and Technology, 2009, 22(10): 7-9,35 |
| |
| Authors: | Qin Xianfang Tang Ning Yang Shengbo |
| |
| Affiliation: | Qin Xianfang,Tang Ning,Yang Shengbo(School of Information and Communications,Guilin University of Electronic Technology,Guilin 541004,China) |
| |
| Abstract: | Based on the analysis of the effect of temperature on the reliability and the stability of integrated circuit chips,a low power consumption thermal protection circuit is designed using the PTAT(Proportional to Absolute Temperature)current and the voltage of PN-junction with a negative temperature coefficient.This circuit is characterized by simple structure,good process compatibility and good transplantability and therefore find wide applications in audio power amplifiers and various integrated circuit chip... |
| |
| Keywords: | thermal protection PTAT current CMOS process hysteresis |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
