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Power supply unit with GaN LED street light

Equipped with FET using gallium nitride (GaN) epiwafer technology of NTT laboratories

Image Left: Image of street light Right: Photo of actual power supply unit

High energy efficiency significantly reduces standby power consumption.
GaN-equipped LED streetlights are expected to contribute to a decarbonized society.

Replacing sodium lamps with LED lamps can reduce annual power consumption, but using it in combination with a power supply equipped with a GaN device will yield a high power reduction effect. Even if you already have LED streetlights, you can save even more. Depending on the scene, you can also control the brightness, turn the lights on and off, and so on. CO 2 reduction measures that are one step ahead of simple replacement with LED lighting are possible.

Three key features of GaN-equipped power supply unit for LED streetlights.

Significantly reduce power consumption

Because GaN devices have high energy conversion efficiency, they reduce power consumption when replacing conventional sodium lamps.

Centralized control of lighting

DALI *1 compliant, allowing for centralized lighting control. This reduces unnecessary lighting and improves energy efficiency.

Service scalability

The system allows for flexible service expansion, including brightness control and security features. *1 DALI: Digital Addressable Lighting Interface, an international standard for lighting control.

GaN (gallium nitride) is a wide-bandgap semiconductor material characterized by its extreme hardness, mechanical stability, large heat capacity, and high thermal conductivity.
By using GaN as the semiconductor material, it is possible to realize devices with higher energy conversion efficiency and superior energy-saving and CO2 reduction effects compared to conventional silicon devices.

Basic specifications

Power supply with GaN

output current 1A-2A
Output Voltage 24VDC-48VDC
output power 96W
Standby power <0.5W
Input Voltage 100 VAC~305 VAC
input frequency 47 Hz~63 Hz
average efficiency >90% (230 VAC)
PF >0.95 (230 VAC/50Hz Full load)
number of outputs 1
control method DALI Dimming Protocol
Dimensions/weight 199 mm × 63 mm × 35.5 mm / 850 g

LED street light section

total luminous flux 13,500 lm
beam angle 150 × 70 degrees (optional)
Input Voltage 90 VAC-305 VAC
power consumption 90 W
efficiency 150 lm / W
color temperature 5,000 K
lifespan 60,000 h (85%)
waterproof and dustproof IP66
Compatible socket NEMA / Zhaga (book18)
mounting pole diameter 80 mm (A separate 60 mm - 80 mm conversion adapter can be used.)
Size 524mm × 312mm × 98mm / 4.7kg

Improved conversion efficiency through switching to GaN semiconductors

By using GaN as a semiconductor material, it is possible to realize devices with higher energy conversion efficiency, energy saving, and CO2 reduction effects than conventional silicon devices.

Figure: Current Si inverters lose 5% when converting from DC power to AC power.
Graph: Loss can be reduced to about 1/7 by applying GaN.
Quoted from the website of the GaN Consortium, a general incorporated association.

When converting 100W of DC power to AC power, Si generates a loss of 5W, but by applying GaN, the loss can be reduced to 0.75W.

About GaN products and technology

USB fast charger with GaN
Power Delivery (PD) compatible, small and high performance charger. With this single unit, you can charge your smartphone and laptop at the same time, eliminating the need to carry several heavy AC adapters!
Nitride semiconductor epitaxial wafer
For inquiries about GaN technology, introduction of GaN wafers to your company's products, purchase requests, etc., please contact us from the Nitride Semiconductor Epitaxial Wafers page.

inquiry

Please feel free to contact us for requests for materials, consultation on introduction, requests for estimates, etc.