Automotive GaN Application

Infotainment/Class-D Audio

Infotainment / Class-D Audio
GaN Reduces Size, Increases Efficiency, and Runs Cooler
Efficient Operation > 2 MHz (above AM Radio Band)

Modern infotainment systems contain many advance features such a touch screen capability, Bluetooth communications, digital and high-definition TV, satellite radio, GPS navigation, and even gaming. These systems put additional demand on the vehicles 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 much higher frequency for solutions that are smaller, more efficient, run cooler, and cost less. These systems can efficiently operate above the AM radio band.

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 Designs

Infotainment/Class-D Audio Reference Designs

Description Output Power Frequency Response
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
EPC9106 Demonstration Board
EPC9106 Class-D audio amplifier 150 W / 8 Ω 20 Hz – 20 kHz, ±0.5 dB Contact EPC
eGaNAMP 2.1
eGaNAMP 2.1 Class-D audio amplifier platform 200 W/ 8 Ω 10 Hz – 20 kHz, ±0.5 dB Contact EAS
eGaNAMP2016 Class-D audio amplifier module 200 W/ 8 Ω 10 Hz – 20 kHz, ±0.5 dB 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
ID (A) Pulsed ID
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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