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

Support Documents & Media

EPC9106 - User Guide EPC2016 - Datasheet

Media

EPC9106_Schematic_1_Full.png EPC9106_Schematic_2_Full.png EPC9106_Schematic_3_Full.png EPC9106_Board_Full.jpg EPC9106_Chart_1_Full.png EPC9106_Chart_2_Full.png EPC9106_Chart_3_Full.png EPC9106_Chart_4_Full.png