10W Stereo Class D Amplifier

This reference design is a simple 10W stereo amplifier providing a class AB performance with class D efficiency. Its efficiency is more optimized when a 12Ω to 16Ω speakers are loaded. It has an efficiency of up to 88% with a low quiescent current which is 24mA. In addition, this device is short circuit and thermal load protected and its power consumption has been reduced to increase battery life.  Read more

30W Stereo Audio Amplifier with Clipping Protection

This reference design features a 30W stereo audio amplifier that employs a motorized slide potentiometer to provide clipping protection. The PSM60-081A-103B2 is a half-watt, 10kΩ, 60mm, motorized slide potentiometer. It provides two built-in 10kΩ variable resistors labeled as line track and servo track. The line track variable resistor can be used for other purpose, while the servo track variable resistor can be used for tracking the position of the potentiometer lever. The built-in DC motor controls or adjusts the position of the potentiometer lever as well as the resistance of the line track and the servo track variable resistors. Read more

6W Inductor Free Stereo BTL Class D Audio Amplifier Circuit Diagram

The circuit is a class-D 6W inductor free audio amplifier for BTL (bridged-Tied Load) stereo speaker at up to 6Ω to 8Ω per channel. The TPA3144D2 has an advance EMI suppression technology with spread spectrum control and 1SPW modulation scheme that enables the use of inexpensive ferrite bead filters at the outputs. The design is applicable in inductor free application with limited distance length of wire between the amplifier and speakers. Read more