Automotive GaN Application

Infotainment/Class-D Audio

Modern infotainment systems contain many advanced features such as touchscreen capability, Bluetooth communications, digital and high-definition TV, satellite radio, GPS navigation, and even gaming. These systems put additional demand on the vehicle's power system.

GaN devices are much smaller in size and have less capacitance when compared to silicon MOSFETs. The superior figure of merit (FoM) of GaN transistors compared to state-of-the-art silicon MOSFETs allows the design of DC-DC conversion for these systems at a much higher frequency for solutions that are smaller, more efficient, run cooler, and cost less.

In addition to the DC-DC solutions, GaN FETs benefit Class-D audio systems. For Class-D, the audio performance is impacted by the FET characteristics. GaN FETs enable higher fidelity Class-D audio amplifiers.

GaN Infotainment/Class-D audio

Reference Design

Part
Number
Description Output Power Frequency Response
KS25-3WBAEVALZ
KS25-3WBAEVALZ 3-in-1 smart speaker reference design 100 W x 1 + 25 W x1 into 8 ohms 20Hz to 20kHz, +/-0.5dB Contact Renesas
DigiGaN-200S
DigiGaN-200S Class-D High-Performance eGaN FET Amplifier Module w/DSP 50 W x 4 / 8 Ω
200 W x 2 / 8 Ω
20Hz-20kHz +/-0.2dB Contact EAS
DigiGaN-400S
DigiGaN-400S Class-D High-Performance eGaN FET Amplifier Module w/DSP 100 W x 4 / 8 Ω
400 W x 2 / 8 Ω
20Hz-20kHz +/-0.2dB Contact EAS
GaNAMP2001
eGaNAMP2001 Class-D High-Performance eGaN FET Amplifier Module 200 W x 4 / 8 Ω
400 W x 2 / 8 Ω
20Hz-20kHz +/-0.5dB Contact EAS
GaNAMP1002
eGaNAMP1002 Class-D High-Performance eGaN FET Amplifier Module 100 W x 4 / 8 Ω
400 W x 2 / 8 Ω
20Hz-20kHz +/-0.5dB Contact EAS

EPC’s application team is constantly working on new reference designs. If there is a requirement not met by the listed boards, please contact us via Ask a GaN Expert to discuss your application further.

Half-bridge development boards are available for quick evaluation of most eGaN FETs and ICs.

Recommended AEC Devices for Infotainment/Class-D Audio

Part Number Status Configuration VDS
max
VGS
max
max
RDS(on)
(mΩ)
@5VGS
QG
typ
(nC)
QGS
typ
(nC)
QGD
typ
(nC)
QOSS
typ
(nC)
ID (A) Pulsed ID
(A)
Package
(mm)
EPC2214 Active Single AEC 80 6 20 1.8 0.5 0.3 8 10 47 BGA 1.35 x 1.35 Buy Now
EPC2252 Preferred Single AEC 80 6 11 3.5 1 0.5 15 8.2 75 BGA 1.5x1.5 Buy Now
EPC2204A Preferred Single AEC 80 6 6 5.7 1.8 0.8 25 29 125 LGA 2.5 x 1.5 Buy Now
EPC2218A Preferred Single AEC 80 6 3.2 10.5 3.2 1.5 46 60 231 LGA 3.5 x 1.95 Buy Now
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