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Top 10 Reasons OEMs Are Switching to 65W USB-C PD GaN Power Adapters

Why 65W GaN USB-C PD Adapters Are Becoming the New Standard for OEM Designs

The shift toward 65W USB-C PD GaN adapters is not just a trend. It reflects a deeper change in how OEMs approach power design for compact commercial devices. Traditional silicon-based adapters are reaching practical limits in size, efficiency, and thermal performance. At the same time, devices themselves are becoming smaller, more powerful, and more dependent on fast, flexible charging.

Phihong’s AQ65 series, including models like AQ65A, AQ65E, and AQ65K, sits directly in this transition point. These adapters combine GaN switching efficiency with USB-C Power Delivery, enabling OEMs to support laptops, tablets, medical equipment, and industrial handhelds with a single compact power solution. That convergence of efficiency, size reduction, and universal connectivity is exactly why OEMs are rethinking legacy adapter strategies.

From a design perspective, 65W is also a practical sweet spot. It supports modern processors, displays, and battery systems without pushing into the size and thermal challenges of higher wattage adapters. For many applications, this is the most efficient way to deliver high performance in a portable form factor.

Useful Links

• https://www.phihong.com/products/adapters/
• https://www.phihong.com/what-is-usb-c-pd-and-why-is-it-better-than-standard-usb-c/
• https://www.phihong.com/best-guide-to-gan-power-supplies-for-oems-industrial-medical-telecom/

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• https://www.phihong.com/how-to-choose-the-best-power-adapter-supplier-for-oems-key-factors-for-safety-reliability-and-compliance/
• https://www.phihong.com/why-supply-chain-resilience-is-now-a-power-supply-design-requirement-for-oems/
• https://www.phihong.com/navigating-power-supply-manufacturing-lead-times-delays-a-2026-guide-for-oems/

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AA03A-075A-R

• Output Power - 2.75W
• Output Volt - 7.5V
• Output Current - 0.366A
• Features - Fixed Blade AC Input, Limited Power Source, Class B EMI, Level VI Efficiency, Standard Barrel Connector

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EV Chargers

AC Series

• Output Current - 16A
• Features - Mode 2-chargers can use a circuit ranging from 8Amp to 16Amp with a local standard AC input plug installed for operation, Provides overcurrent, over voltage and short circuit protection, Protected against strong jets of water from all directions, Continuously monitors/supervises the ground connection between the AC supply and EV to ensure safe and reliable charging

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Open Frame / Internal PSU

BF550-234A-R

• Output Power - 550W
• Output Volt - 12Vdc / 54.5Vdc
• Features - Universal AC Input range, Class I Design , Class B EMI , High Efficiency Performance , OVP, OCP, SCP, OTP Protections , Operating Altitude: 5,000M

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DA1000Z-240AEV-R

• Output Power - 1000W
• Output Volt - 24V
• Output Current - 1000W
• Features - Extended operating temperature range of -40℃ to 70℃, Fan-less aluminum case filled with heat conductive glue, Able to withstand 10G vibration, Power on LED indicator, Short Circuit, Over Current, Over Voltage, and Over Temperature Protections, & Adjustable output through potentiomete

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Battery Charger Solutions

DA60U-240A-R

• Output Power - 60W
• Output Volt - 24V
• Output Current - 2.5A
• # of ports - 1
• Features - RESNA Compliant, CEC Compliant, LED Indicators Charge State, OVP, OTP, SCP, Charges AGM Batteries, Max 12hrs Charging Time

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Battery Charger Solutions

DA200U-250A-R

• Output Power - 200W
• Output Volt - 24V
• Output Current - 8A
• # of ports - 1
• Features - RESNA Compliant, CEC Compliant, LED Indicators Charge State, OVP, OTP, SCP, Dual-Mode Charger, Charges GEL or AGM batteries, Max 12hrs Charging Time

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What Is Driving OEM Adoption of 65W USB-C PD GaN Power Adapters Right Now?

Several forces are converging at once. First, USB-C Power Delivery has become the dominant charging standard across consumer, enterprise, and medical devices. This creates strong pressure for OEMs to align with a universal interface rather than maintain proprietary connectors.

Second, GaN technology enables higher switching efficiency and lower heat generation, which directly supports smaller adapter sizes. This is critical for modern product design, where users expect compact, lightweight, and travel-friendly solutions.

Third, global product strategies are changing. OEMs want fewer SKUs, more flexible deployment, and simplified certification paths. A 65W USB-C PD GaN adapter can often serve multiple device categories and multiple regions, which reduces complexity across engineering, procurement, and logistics.

Phihong’s AQ65 series aligns directly with these drivers. It provides a compact, high-efficiency platform that supports global deployment and modern charging expectations without sacrificing reliability or safety.

Useful Links

• https://www.phihong.com/products/adapters/
• https://www.phihong.com/usb-c-charger-shaping-the-future-of-the-tech-world/
• https://www.phihong.com/how-gallium-nitride-gan-is-powering-the-next-generation-of-compact-high-efficiency-robot-power-supplies/

Related Articles

• https://www.phihong.com/medical-power-supply-how-to-choose-the-best-solution-for-safe-reliable-medical-devices/
• https://www.phihong.com/medical-power-supply-vs-medical-power-adapter-whats-the-difference-and-which-one-do-you-need/
• https://www.phihong.com/best-guide-to-medical-power-supplies-for-modern-medical-devices/

Top 10 Reasons OEMs Are Switching to 65W USB-C PD GaN Power Adapters

1. GaN Technology Enables Smaller, More Compact Power Designs

GaN-based adapters operate at higher switching frequencies than traditional silicon designs, which allows for smaller transformers and fewer passive components. This directly reduces the overall size of the adapter without sacrificing output power. For OEMs, this means they can offer more portable and visually refined products without redesigning internal electronics.

In compact commercial devices such as tablets, handheld tools, and portable medical systems, size matters as much as performance. A bulky adapter can negatively impact the user experience, especially in travel or bedside environments. By using GaN technology, OEMs can match modern industrial design expectations while maintaining reliable power delivery.

This is one of the primary reasons the AQ65 series stands out. It delivers full 65W output in a compact footprint, making it easier to integrate into modern product ecosystems where space efficiency is a key differentiator.

2. USB-C Power Delivery Simplifies Device Compatibility

USB-C Power Delivery allows a single adapter to support multiple voltage levels and device types. Instead of designing separate chargers for different products, OEMs can standardize around one platform that adapts dynamically to each device.

This flexibility is especially valuable in product families where multiple models share similar power requirements. A single 65W USB-C PD adapter can support laptops, tablets, and specialized equipment, reducing the need for multiple accessories.

For OEMs, this translates into fewer SKUs, simplified packaging, and a more consistent user experience. It also aligns with customer expectations, as users are already familiar with USB-C across consumer electronics.

3. Higher Efficiency Reduces Heat and Improves Reliability

Efficiency directly affects how much heat an adapter generates during operation. GaN adapters are significantly more efficient than traditional silicon designs, which means less energy is lost as heat.

Lower heat output improves both user comfort and long-term reliability. In compact devices, excessive heat can affect nearby components, reduce battery lifespan, and create thermal challenges for engineers.

By adopting high-efficiency GaN adapters, OEMs can reduce thermal stress across the entire system. This not only improves product durability but also simplifies internal cooling strategies, especially in fanless designs.

4. 65W Output Matches the Needs of Modern Compact Devices

The 65W power range has become a practical standard for many modern devices. It provides enough headroom to power high-performance processors, displays, and battery charging circuits without requiring oversized adapters.

This makes it ideal for laptops, medical monitors, portable diagnostic tools, and industrial handheld devices. OEMs can rely on this wattage to support both operation and charging simultaneously.

The AQ65 series is specifically designed to meet this demand, offering a balance between performance and portability that aligns with current device requirements.

5. Universal Charging Reduces Accessory Complexity

Using a single USB-C PD adapter across multiple devices simplifies the overall product ecosystem. OEMs no longer need to manage multiple charger types for different models or regions.

This reduces packaging complexity, lowers inventory costs, and improves customer satisfaction. Users benefit from a cleaner setup with fewer cables and adapters to manage.

For global product lines, this standardization is especially valuable. It allows OEMs to streamline logistics while maintaining compatibility across markets.

6. GaN Supports Faster Charging Without Increasing Size

GaN technology enables higher power density, which allows for faster charging in a smaller form factor. This is critical for devices that rely on quick turnaround times, such as medical equipment or mobile workstations.

Faster charging improves usability by reducing downtime. In clinical or commercial environments, this can have a direct impact on productivity and workflow efficiency.

OEMs adopting 65W GaN adapters can deliver this performance advantage without increasing the size or weight of the power solution.

7. Global Compatibility Simplifies International Deployment

Most 65W USB-C PD GaN adapters support wide AC input ranges, making them suitable for global use. This allows OEMs to deploy products across multiple regions without redesigning the power system.

Phihong’s adapter lineup supports global voltage standards, which helps reduce certification complexity and streamline export operations.

For companies expanding internationally, this compatibility is a key advantage. It reduces barriers to entry and supports faster market expansion.

8. Improved Reliability Through Advanced Circuit Protection

Modern GaN adapters include built-in protections such as over-voltage, over-current, and short-circuit safeguards. These features help protect both the adapter and the connected device.

For OEMs, this reduces the risk of product failure and improves overall system reliability. It also supports compliance with safety standards required for commercial and medical applications.

Phihong’s AQ65 series incorporates these protections as part of its design, ensuring consistent performance under a wide range of conditions.

9. Cleaner Power Output Improves Device Performance

High-quality power delivery is essential for sensitive electronics. Noise, ripple, and instability can affect device performance, especially in applications involving sensors or displays.

GaN adapters are designed to provide cleaner output with reduced electrical noise. This helps maintain stable operation and improves overall system performance.

For OEMs, this means fewer integration issues and better end-product reliability.

10. Future-Proof Design Supports Evolving Device Standards

USB-C and GaN are both forward-looking technologies. As more devices adopt these standards, OEMs that align with them today are better positioned for future compatibility.

Using a 65W USB-C PD GaN adapter ensures that products remain relevant as charging standards evolve. It also reduces the need for redesigns in future product generations.

This makes the transition not just a technical upgrade, but a strategic decision for long-term product development.

The shift to 65W USB-C PD GaN adapters represents a broader move toward efficiency, standardization, and user-focused design. OEMs are not just upgrading their power supplies. They are simplifying their entire product ecosystem.

How Phihong Supports OEMs Transitioning to GaN USB-C Power Platforms

Phihong’s AQ65 series provides a practical entry point into GaN-based USB-C power design. With models like AQ65A, AQ65E, and AQ65K, OEMs can adopt a proven platform that balances efficiency, size, and reliability.

Phihong’s experience in power supply design, combined with its global manufacturing capabilities, allows OEMs to scale production while maintaining consistent quality. This is especially important for companies operating across multiple regions.

By choosing a partner with a strong track record in both traditional and next-generation power technologies, OEMs can reduce risk and accelerate development timelines.

As device design continues to evolve, the role of the power adapter will only become more important. Choosing the right platform today helps ensure long-term success.