Automotive GaN Application

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.

Infotainment/Class-D Audio Reference Designs

	Part Number	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	Class-D audio amplifier	150 W / 8 Ω	20 Hz – 20 kHz, ±0.5 dB	Contact EPC
	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