What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
iTechGuides is reader-supported. When you buy through links on our site, we may earn an affiliate commission. As an Amazon Associate I earn from qualifying purchases. Learn more
Silicon carbide (SiC) and gallium nitride (GaN) are semiconductor materials used to build switches and power-conversion components. They are alternatives to silicon when a design needs a particular combination of voltage handling, temperature tolerance, switching behavior, efficiency, size or power density.
You may encounter SiC in solar inverters, electric-vehicle power electronics and grid-conversion research. GaN is especially visible in compact USB-C fast chargers and laptop adapters. Neither material is universally better than silicon or than the other: the right choice depends on the complete system, including the transistor design, circuit, packaging, cooling, operating voltage and required power.
What SiC and GaN do in a power circuit
A semiconductor is a material whose electrical behavior can be controlled to make components such as transistors, diodes and integrated circuits. In power electronics, those components work like rapidly controlled valves for electrical energy. The valve is an analogy rather than a mechanical description: a transistor has no moving parts, but it can turn current on and off or regulate it at high speed.
Silicon carbide and gallium nitride are often grouped as wide-bandgap semiconductors. Their material properties give device engineers different options from conventional silicon. The benefit is not a magic property that automatically improves every product. A complete converter or inverter still depends on gate-drive circuitry, magnetic components, thermal paths, insulation, control software, packaging and the conditions in which it operates.
#1 Best Overall
- Faster & Cooler Choice: This UGREEN USB C Charger Block supports a max power transmission of 30W. Within 30 minutes, it can charge your iPhone 17 or Galaxy S26 to about 60%. Not only that, the Always-On Temperature Detection also ensures that it will not overheat during the fast charging process.
- Spend Less, Charge More: This USB C Charger has 3 interfaces, including 2 USB C and 1 USB A interface, which ensures its wide compatibility and can be used with different devices. You can charge three of your devices at the same time. Just enjoy the convenience of multiple interfaces.
- Real safety is safe inside and out: The charger features an upgraded GaN II chip, offering efficient heat dissipation and faster response to over-voltage, over-current, and short-circuit protection. Its housing is made of flame-retardant matte PC material, ensuring complete safety both inside and out for this compact charger.
- Compact and lightweight: This charger easily fits into your bag or pocket, making it perfect for travel, office, or daily carry. Its small size doesn’t just save space — it also keeps your desk tidy, reduces clutter, and lets you charge multiple devices anywhere without hassle.
- Multi-Protocol Charging: Supports PD, QC, and PPS fast-charging protocols. Tip: When using multiple ports simultaneously, single outputs up to 15W. For original Mag Safe accessories, use a single port.
The U.S. Department of Energy describes SiC in power-electronics applications as able to withstand higher temperatures and voltages than silicon. Higher voltage capability can reduce the number of conversion stages or simplify a high-voltage design; higher temperature tolerance can ease thermal constraints; and faster switching can help reduce the size of some passive components. Whether those advantages appear at system level depends on the particular design.
GaN can also be engineered for fast power switching. The clearest everyday example in the available evidence is the compact USB-C charger, where a GaN power IC is part of the high-frequency conversion circuitry. A charger’s performance still depends on its topology, firmware, thermal design, port controller and charging standards; the presence of GaN alone does not guarantee a certain wattage, charging speed or compatibility.
Where silicon carbide is used
Solar photovoltaic inverters
Solar panels produce electricity that must be converted into grid-compatible alternating current. A photovoltaic inverter performs that conversion and may also manage voltage, current, maximum-power-point tracking and grid synchronization. SiC switches and diodes can be used in this power stage.
Quick wins for a faster PC:
Scan for outdated or missing drivers - takes under a minuteDriver Scan →Repair Windows errors before they cause bigger problemsFix Now →Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →The Department of Energy reports a comparison in which SiC inverters reached about 99% efficiency over a wide range of power levels, compared with 98% for state-of-the-art silicon inverters. DOE explains that the one-percentage-point improvement represents a 50% reduction in energy loss in that comparison: a 2% loss falls to approximately 1%. These figures describe DOE’s stated test context, not every commercial inverter or every operating point.
Electric vehicles and other electric-drive vehicles
Electric-drive systems use several power-conversion stages. A traction inverter converts battery DC into the controlled AC waveforms that drive the motor. A DC/DC converter changes one DC voltage to another, and an onboard charger converts energy from the electricity supply into battery-charging current. SiC devices are being used and developed for these types of high-power stages.
Rank #2
- The Only Charger You Need: Say goodbye to your old power bricks. Anker 715 Charger (Nano II 65W) has the power you need to fast charge your phone, tablet, and USB-C notebook from a single tiny charger.
- High-Speed Charging: Charge a 2020 MacBook Air in less than 2 hours, a MacBook Pro 13ʺ at full speed, an iPhone 13 up to 3× faster than with an original 5W charger, and charge the latest Samsung phones at full speed with Samsung Super Fast Charging.
- Downsized Design: At 58% smaller than an original 61W USB-C charger, and with a foldable plug, Anker Nano II takes up less space while giving you just as much power.
- Powered by GaN II Technology: With a 100% increase in operating frequency, an innovative stacked design, and an upgraded circuit board structure, GaN II technology makes our latest charger smaller without sacrificing a drop of power.
- What You Get: Anker 715 Charger (Nano II 65W) / Anker Nano II 65W, welcome guide, our worry-free 18-month warranty, and friendly customer service (cable not included).
DOE discusses both SiC and GaN in vehicle power-electronics research, but that does not mean every electric vehicle uses GaN or SiC, nor that either material is the default choice for every traction inverter. Vehicle platforms balance efficiency, voltage, cooling, cost, reliability, packaging and manufacturing maturity.
A specific example comes from a National Renewable Energy Laboratory report dated January 7, 2025. NREL described a SiC traction inverter developed with John Deere with a 200-kilowatt rating and a 1,050-volt specification. NREL reported roughly 400% greater power density than previous silicon-only designs and said the inverter was being adopted into a production-intent program at that time. “Production-intent” describes the program status reported in 2025; it is not a guarantee that every current production vehicle uses that inverter.
Medium-voltage grid equipment
Distribution networks need equipment that converts, regulates and interconnects electrical power at medium voltage. NREL has described development of SiC medium-voltage converters for distribution-grid applications, including conversion and interconnection concepts.
These projects should be understood as engineering development and research examples rather than proof that SiC medium-voltage converters are universally deployed across today’s grid. Utility adoption depends on certification, insulation coordination, reliability, serviceability, cost and the requirements of each network.
Concentrating solar power and other energy systems
DOE also names heat exchangers in concentrating solar power plants among SiC applications. SiC’s ability to operate in demanding thermal environments is relevant to components exposed to high temperatures, although the material choice still depends on mechanical design, corrosion, manufacturing and lifecycle requirements.
Rank #3
- Ultra-Compact Design: Experience exceptional power in a remarkably compact charger that is 51% smaller than the original 67W MacBook charger—ideal to bring anywhere you go.
- Fast Charging for 3 Devices: With 2 USB-C ports and 1 USB-A port, effortlessly charge your phone, tablet, and notebook all at once from a single charger. Connect a single device to charge up to 67W.
- 65W Max Two-Port Charging: Whether you use both USB-C ports or a combination of USB-C and USB-A ports, enjoy fast and efficient charging with a maximum output of 65W.
- Comprehensive Safeguards: The upgraded ActiveShield 2.0 system provides secure charging with built-in protections for added peace of mind.
- What You Get: Anker Prime 67W GaN Wall Charger (3 Ports), welcome guide, our worry-free 24-month warranty, and friendly customer service.
Where gallium nitride is used
USB-C fast chargers and laptop adapters
The most familiar GaN application for a general consumer is a USB-C wall charger. Navitas has described GaN power ICs used in 25–100-watt consumer and mobile USB-C fast chargers and adapters for smartphones and laptops. GaN switching can support a high-frequency, compact power-conversion design, allowing manufacturers to pursue smaller adapters at a given power rating.
The Tool Desk
Outbyte PC Repair FREERepair Windows errors before they cause bigger problemsFix Now →Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →When buying or using a charger, check the charger’s rated wattage, the number and type of ports, USB Power Delivery or other supported charging protocols, cable capability and the device manufacturer’s requirements. “GaN” identifies a semiconductor technology; it does not by itself establish that a charger supports a particular phone, laptop, cable or fast-charge mode.
Historical product scale
In a June 3, 2020 announcement, Navitas said more than 50 GaNFast-enabled mobile fast-charger products and platforms were available or in development, with wall chargers ranging from 24 W to 300 W. This is a company-reported historical count from 2020, not a current market total or an independent measurement of all GaN chargers.
The same announcement quoted Navitas executive Stephen Oliver saying customers had used the company’s GaNFast power ICs to create “the world’s smallest, thinnest and lightest power adapters and fast-chargers.” That is a vendor statement containing a promotional superlative, so it should be read as the company’s claim rather than a universal, independently verified ranking.
Vehicle power-electronics research
DOE identifies GaN alongside SiC as a material under research for vehicle power electronics. The evidence supports investigating GaN in vehicle conversion stages, but it does not establish that GaN is broadly deployed in traction inverters or that it is superior to SiC in that role. Vehicle designers select a device technology for the voltage, current, switching frequency, thermal environment, package and reliability target of a specific platform.
Rank #4
- the Only Charger You Need: Say goodbye to your old chargers. Anker 735 Charger (Nano II 65W) has the power you need to fast charge your phone, tablet, and USB-C notebook from a single charger.
- High-Speed Charging: Connect a single device to get a 65W max charge—that’s enough to power up a 2020 MacBook Pro 13″ at full speed. And when you connect three devices, power will be distributed efficiently between ports to ensure you get the best charge.
- Compact Design: Power up to 3 devices with a charger that’s roughly the size of an AirPods Pro case.
- Powered by GaN II Technology: With a 100% increase in operating frequency, an innovative stacked design, and an upgraded circuit board structure, GaN II technology makes our latest charger smaller without sacrificing a drop of power.
- What You Get: Anker 735 Charger (Nano II 65W) / PowerPort III 3-Port 65W Pod, welcome guide, our worry-free 18-month warranty, and friendly customer service.
What this evidence does not establish
The documented examples here focus on GaN power conversion, particularly consumer chargers and adapters. They do not provide enough evidence to make a responsible overview of GaN radio-frequency, LED or other optoelectronic uses. Those are separate application areas and should not be inferred from the charger examples.
SiC and GaN compared by engineering job
A useful comparison starts with the task the device must perform, not with a claim that one material is always “better.” Engineers typically examine the following factors:
- Voltage and current: The switch must withstand the circuit’s blocking voltage and conduct its expected current with acceptable losses.
- Switching frequency: Faster switching can reduce the size of inductors, transformers and capacitors, but it can also increase electromagnetic interference, gate-drive complexity and switching losses.
- Efficiency and heat: Lower conduction and switching losses reduce the heat that the package and cooling system must remove. The result depends on the operating point, not just the semiconductor label.
- Power density and size: A smaller magnetic component or heatsink can reduce system volume, but packaging and insulation may become more demanding.
- Operating environment: Temperature cycling, vibration, humidity, electrical transients and required service life affect the material, package and module design.
- Cost and manufacturing maturity: The die is only one part of the bill of materials. Production yield, drivers, passive components, cooling, qualification and supply-chain capability all matter.
The examples supported by the available sources show a pattern, not a rigid rule: SiC appears in solar, vehicle and grid power equipment, while GaN is especially visible in compact consumer chargers. A design team may choose silicon, SiC or GaN after modeling the entire converter and validating it under its real load profile.
Documented figures and how to interpret them
| Figure | Source and date | What it describes |
|---|---|---|
| About 99% SiC-inverter efficiency versus 98% for state-of-the-art silicon inverters | U.S. Department of Energy; page carrying a March 2, 2026 research example | DOE’s comparison over a wide range of power levels; DOE says the one-percentage-point change represents a 50% reduction in energy loss |
| 200 kW and 1,050 V | National Renewable Energy Laboratory, January 7, 2025 | Specifications NREL reported for a SiC traction inverter developed with John Deere |
| Roughly 400% greater power density than previous silicon-only designs | National Renewable Energy Laboratory, January 7, 2025 | NREL’s reported comparison for that traction-inverter project |
| More than 50 GaNFast-enabled products and platforms; 24 W to 300 W wall chargers | Navitas Semiconductor, June 3, 2020 | A historical, company-reported product count and charger-power range |
These numbers should stay attached to their source, date and conditions. They are useful illustrations of what a particular project or vendor reported, not guarantees for every SiC inverter, GaN charger or future product.
Outdated Drivers Are Slowing You Down
One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchWindows Errors? Fix Them Before They Spread
Repair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstallHow the materials affect a complete system
The transistor is not the whole converter
Replacing a silicon switch with a SiC or GaN switch does not automatically produce the same circuit with better results. The gate driver may need different voltage levels and timing. Layout must control parasitic inductance and ringing. Magnetic components may be redesigned for a changed switching frequency. Insulation, creepage, clearance and electromagnetic-compatibility filters may also change.
Best Value
- AirPods-Size 160W Power: Delivering 1.35W/cm³ of power density, this sleek 3-port usb c charger provides a total output of 160W while being as compact as an AirPods Pro 3 case, making it easy to carry yet powerful enough to handle your devices.
- 140W Single-Port Output: Enjoy a consistent 140W single-port output without derating, keeping laptops charging at maximum speed even during long work sessions or heavy loads. Charge a 16-inch MacBook Pro from 0 to 50% in just 25 minutes, without worrying which port to use.
- One Equals Three: With smart power distribution powered by PowerIQ 5.0, power a 16" MacBook Pro, iPhone 16 Pro Max, and 11" iPad Pro in the same time as three original chargers (140W + 35W + 35W). Carry one instead of three and stay fully productive on the go.
- Smarter Charging Control: With AnkerSense View, monitor power in real time on screen, switch modes instantly, and unlock custom modes through the app via Bluetooth.
- What You Get: Anker Prime Charger (160W, 3 Ports, Smart Display, With no-cable), welcome guide, 24-month warranty, and our friendly customer service.
Thermal design still matters
A material that tolerates higher junction temperatures can give a designer more thermal headroom, but heat still has to leave the device. The package, die attach, substrate, heatsink, airflow or liquid loop determine the actual temperature. A poorly cooled wide-bandgap device can perform worse or fail sooner than a well-designed silicon system.
System-level efficiency depends on workload
Efficiency varies with input voltage, output power, switching frequency, temperature and control mode. A device optimized for a high-voltage operating point may not deliver the same advantage at light load. Datasheet curves and measurements at the intended duty cycle are more meaningful than a material-level slogan.
Practical checklist for identifying a GaN charger
- Confirm the rated output: Match the charger’s wattage to the phone, tablet or laptop. A charger rated for more power does not force a device to draw that full amount.
- Check the port arrangement: Multi-port chargers may divide their available power when more than one device is connected.
- Check charging protocols: Verify support for the USB Power Delivery profiles or other standards your device expects.
- Use an appropriate cable: Cable current and power ratings can limit charging even when the adapter is capable of more.
- Review safety and regional requirements: Look for the electrical ratings and conformity markings required in your country, and avoid using a damaged adapter or cable.
- Do not treat GaN as a quality guarantee: Thermal protection, isolation, transient protection, firmware and construction quality remain separate considerations.
Common misconceptions
“Wide-bandgap means universally superior.”
Wide-bandgap materials create design opportunities, but the best result depends on the converter and its constraints. Silicon remains suitable for many applications, and SiC and GaN occupy overlapping but not identical design spaces.
“All EVs use SiC, or all compact chargers use GaN.”
Those statements are too broad. The sources document SiC vehicle and solar examples and GaN consumer-charger examples, plus research into vehicle applications. They do not establish universal adoption.
“A GaN label proves faster charging.”
Charging speed is limited by the device, charger protocol, cable, battery-management system and thermal conditions. GaN may enable a compact conversion design, but it does not override those limits.
“A published efficiency percentage applies to every load.”
The DOE efficiency figures are tied to DOE’s comparison and stated operating range. Efficiency must be evaluated at the voltage, load and temperature relevant to the product being designed or purchased.
Bottom line
SiC and GaN are alternative semiconductor materials for controlling and converting electrical power. SiC is documented in solar inverters, electric-drive systems, grid-converter development and high-temperature energy equipment. GaN is most visible in compact USB-C chargers and adapters, with additional vehicle power-electronics research. Choose between them—and between either one and silicon—by the voltage, power, switching, thermal, packaging, cost and reliability requirements of the complete system.
Recommended Free Tools
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
