AES E-Library

CMOS Self-Oscillating Class D Amplifier with Output Optimization

Simple amplifier topologies are not the norm for integrated circuit (IC) class D amplifiers. A simple self-oscillating topology [1] is mapped into a standard CMOS technology and fabricated in a 0.5 micron process. The output stage is optimized for a range of modulation indices [2], simultaneously increasing average efficiency and reducing chip area. Modifications to the optimization methodology are proposed to enhance efficiency and reduce the large transient currents inherent in CMOS inverter chains. Test results are presented and compared to predicted and simulated values. This project shows that design complexity is not requisite for good performance and high efficiency.

Authors: Balkir, Sina; Hoffman, Michael; White, Dan
Affiliation: University of Nebraska-Lincoln
AES Convention:121 (October 2006) Paper Number:6859 Import into BibTeX
Subject:Digital Amplifiers

Click to purchase paper or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!

This paper costs $20 for non-members, $5 for AES members and is free for E-Library subscribers.

Learn more about the AES E-Library

E-Library Location: (CD 121Papers)   /121/6859.pdf

Start a discussion about this paper!