This project involved the analysis, design and implementation a Class-D audio amplifier with a power efficiency of greater than 90%. The circuit was optimized for a 12 Volt single-supply system using four power MOSFET's in an H-Bridge configuration to drive a 2N speaker load. Pulse-Width-Modulation (PWM) was then used to control the MOSFET's. In addition, switching losses were minimized by utilizing three-level PWM to prevent MOSFET switching for a zero-level input signal. Power measurements on the circuit confirm the theoretical predictions.

• This report represents the work of one or more WPI undergraduate students submitted to the faculty as evidence of completion of a degree requirement. WPI routinely publishes these reports on its website without editorial or peer review.

Creator

• Maina, James W.
• Lawrence, Adam Matthew
• Murphy, Philip Emmit

Publisher

• Worcester Polytechnic Institute

Identifier

• 03D187M

Advisor

• Bitar, Stephen John

Year

• 2003

Date created

• 2003-01-01

Resource type

• Major Qualifying Project

Major

• Electrical Engineering

Rights statement

• In Copyright