40 W Integrated Car Radio Audio Amplifier

This paper describes a BTL (Bridge Tied bad) class-H, high -power, high-efficiency audio amplifier for car radio applications. With a supply of 14.4 V, the output power is 40 W into an 8 /spl Omega/ load this is not possible using a normal class-B amplifier. Assuming that the music signal at the input has a normal (Gaussian) amplitude disrnbution, the dissipation is about 50% less than that of a class-B BTL amplifier with the same output power.