EPC9106 (#2): 250W x2 @ 4Ω, ±27V in, Class D

Summary

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.

Specifications

Manufacturer	EPC
Category	Audio Amplifiers
Eval Board Part Number	917-1090-ND
Eval Board Supplier	EPC
Eval Board	Board not Stocked
Amplifier Type	Class D
Number of Outputs	Stereo
Output Power (RMS) @ Load	250 W x 2 @ 4 Ω
Voltage In	± 27 V
THD+N (1kHz) @ Conditions	< 0.03% @ Full Power (8 Ω, 150 W)
Features	Differential Inputs Over Current Protection Over Voltage Protection
Efficiency @ Conditions	>90%, 50 ~ 267 W @ 4 Ω >80%, 11 ~ 152 W @ 8 Ω
Standby Current [Typical]	- Not Given
Quiescent Current [Typical]	- Not Given
Component Count + Extras	454 + 13
Application / Target Market	Audio: Hi Fi Audio: Home Theater Systems Audio: Powered Speakers
Design Author	EPC
Main I.C. Base Part	EPC2016
Quiescent Current [Maximum]	- Not Given
Standby Current [Maximum]	- Not Given
Date Created By Author	2014-12
Date Added To Library	2025-11