EPC9106 (#1): 150W x2 @ 8Ω, ±27V in, Class D

The EPC9106 demonstration board is a reference design for a 150 W / 8 Ω Class D audio amplifier. The demonstration board uses a Bridge-Tied-Load (BTL) design, composed of four ground-referenced Half-Bridge Output Stages. This architecture and topology allows scalability and expandability.

The EPC9106 reference design has demonstrated 96% efficiency at 150 W / 8 Ω, and 92% efficiency at 250 W / 4 Ω.

The EPC9106 demonstration board features the EPC2016 enhancement mode (eGaN®) field effect transistor (FET), as well as the Texas Instruments LM5113 gate driver.

A complete block diagram of the circuit is given in Figure 1. For more information on the EPC2016 eGaN FET please refer to the datasheet which should be read in conjunction with this quick start guide.