A 48V 5A Gallium Nitride (GaN) Power Supply is a high-performance 240W power brick predominantly used to power high-fidelity Class-D audio amplifiers.

By swapping traditional silicon transistors for Gallium Nitride (GaN), these power supplies achieve higher energy efficiency, lower operating temperatures, and a lighter footprint compared to standard power supplies.

 

Key Specifications:

• Input Voltage: AC 100–240V, 50/60Hz
• Output Voltage: DC 48V
• Output Current: 5A (240W Max)
• DC Plug Size: 5.5mm x 2.5mm (center-positive)
• Switching Frequency: ~170 kHz to 171 kHz

 

Advantages of GaN:

• Lower Heat: Higher energy conversion efficiency means lower running temperatures under heavy loads.
• Compact Size: Reduced parasitic capacitance allows for smaller internal transformers and heat sinks.
• Low Noise: Provides clean, stable current with minimal ripple voltage (millivolt range) suitable for audio gear.

 

 

Safety and Compatibility:

• Protections: Over-current, over-voltage, overload, and over-temperature safeguards.
• Certifications: Frequently carries FCC, CE, and RoHS stamps.
• Compatible Devices: Commonly paired with class-D audio amplifiers like Fosi Audio (V3, BT20A Pro, TB10D, ZA3) and Aiyima (A07, A07 Pro)

 

Popular Commercial Examples & Uses:

These 240W units are highly sought after as upgrade kits for popular mini-amplifiers (like TPA3255 chip-based models) to unlock their maximum wattage potential.