Adaptive Class-D Amplifier for Better Audio & Efficiency
Switching Amplifier with Adaptive Supply Voltage Scaling
Tags: National Cheng Kung University, Taiwan, Electronics & Robotics, Consumer Goods & Services
This innovation addresses performance issues in conventional class-D amplifiers by adaptively adjusting the supply voltage and output pulse width based on the input magnitude. The method reduces the impact of power stage non-idealities like dead time and clock jitter, improving signal-to-noise ratio, dynamic range, and linearity. Applications include class-D audio amplifiers in various consumer electronics. The solution uses low-complexity detection and control circuits, enhancing efficiency and reliability without adding complexity to the design.
IP Type or Form Factor: Patent Granted; Process & Method
TRL: 5 - prototype ready for testing in intended environment
Industry or Tech Area: Semiconductors; Home Appliances & Consumer Electronics
