Class G and Charge-Pump Technologies Maximize Efficiency in Boosted Amplifiers with Minimal Support Components

By: Adrian Rolufs

Abstract: Maxim introduces innovative charge-pump-based boosted amplifiers with Class G technology. Designed for portable applications that require output levels above traditional values, these amplifiers do not sacrifice efficiency or PCB real estate. This application note describes the advantages of using charge-pump and Class G technologies to power loudspeakers. The MAX9730 and MAX9788 speaker amplifiers serve as examples of the new designs.