电子与封装Issue(7)：14-16,27,4.
D类功放输出功率调节电路设计
Design of Class D Power Ampliifer with Output Power Adjustment
只生武1
作者信息
- 1. 无锡晶源微电子有限公司，江苏无锡 214028
- 折叠
摘要
Abstract
Because the class D audio power ampliifer has the advantages of high efifciency, has become the trend of the development of high-power audio ampliifer, but with the constant improvement of the power, the reliability of the system is particularly important, often need to perfect protection and limiting circuit. The paper introduces a design for high power class D audio power ampliifer output power regulating circuit, can be done by outside chip pins input voltage or programmatically dynamically adjust the output power of the power ampliifer. Control method using the method of the biggest limit input signal respectively introduces the control principle and circuit realization of the circuit. Test results show that the circuit has reached the good adjustment effect has good linearity adjustment, improve the reliability of the high power ampliifer circuit.关键词
D类功放/功率调节/幅度限制Key words
class D power ampliifer/power regulation/amplitude limit分类
信息技术与安全科学引用本文复制引用
只生武..D类功放输出功率调节电路设计[J].电子与封装,2015,(7):14-16,27,4.
