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GaN Power Semiconductors

GaN Power Semiconductors
drive industry transformation

They are key components in telecommunications and consumer electronics products for power amplification, conversion
and transmission control (frequency, voltage, current) and modulation (DC, AC).

Classification of power semiconductors

Key modulation functions of power semiconductors

Features

Next-generation power semiconductors
preparing for future industries

Increased
power efficiency
Reduced energy
consumption
Reduced
costs

High frequency, high voltage, high current, high power, high efficiency,
and high-temperature resistant gallium nitride (GaN) and silicon carbide (SiC) compound power semiconductors

	Si	4H-SiC	GaN	AIN	Ga₂O₃
Energy bandgap (ev)	1.12	3.2	3.4	6.2	4.5
Insulation breakdown electric field(MV/cm)	0.3	2.8	3.3	12	8
Electron mobility (cm³/V·s)	1350	720	1100	500	300
Electron saturation velocity (㎝/s, x10⁷)	1	2	2.5	1.4	2.4
Dielectric constant	11.7	9.66	8.9	9	10
Thermal conductivity (W/cm·K)	1.5	4.5	2~3	3.4	0.11

Comparison of key physical property analysis

Power dissipation comparison of power semiconductors

Application field of power semiconductor 01

RF GaN

Amplification of low-voltage,
low-power radiofrequency (RF)
signals into high-power RF signals in base stations,
repeaters, communication terminals, and defense radars

Power amplifier (PA), low noise amplifier (LNA), and switch

GaN power semiconductor
(RF device)

RF GaN
application effect

5G&5G+ wireless communication needs

Rapid increase of data volume, rapid increase of connectivity between communication devices
→ High RF, high power required

Base station: more base stations
→ Downsizing parts required

Terminal: downsized parts and longer battery life
→ High efficiency required

Frequency and power
by semiconductor material

Si vs GaN

Application field of power semiconductor 02

Switching GaN

Energy conversion applications in electrical & home appliances
Increased demand for high efficiency in high- and medium-voltage,
high-power devices
Taking on the role of game-changer
through manufacturing cost innovations

GaN Power Semiconductors (Switching Devices)

Switching GaN
Application Effects

	Power Supply	LED Driver	Electiric Vhicle
	Power Supply	LED Driver	AC-DC Inverter	DC-DC converter	Charge Module
Cost		10%▼	30%▼	30%▼	30%▼
Size	50%▼		30%▼	30%▼	50%▼
Weight	30%▼		35%▼	50%▼	30%▼
Application