采用陷波低通滤波器的D类音频功放环路设计  

Design of Class D Audio Amplifier Loop with Notch Low Pass Filter

作　　者：熊诗伟 张政权[1] XIONG Shiwei;ZHANG Zhenquan(School of Physical Science and Technology,Southwest Jiaotong University,Sichuan 610031,China)

机构地区：[1]西南交通大学物理科学与技术学院,四川610031

出　　处：《电子技术（上海）》2024年第5期10-12,共3页Electronic Technology

摘　　要：阐述D类音频功放中的陷波低通滤波器性能、对滤波器的有效补偿策略,采用电压外环和电流内环的双环结构在D类音频功放中表现更为出色。探讨陷波低通滤波器在D类音频功放中的双环结构,并将其与传统的LC低通滤波器进行比较。This paper describes the performance of notch low-pass filters and effective compensation strategies for filters in Class D audio amplifiers.The dual loop structure of voltage outer loop and current inner loop performs better in Class D audio amplifiers.It explores the dual loop structure of notch low-pass filters in Class D audio power amplifiers and compares it with traditional LC low-passfilters.

关 键 词：D类音频功放 陷波低通滤波器 开关纹波 双环结构 LC低通滤波器 

分 类 号：TN722[电子电信—电路与系统]