FAQ
The questions specifiers ask most, answered in our guides.
Emergency LED Driver Selection Guide: Power, Battery, Codes & FAQ
What Is an LED Driver? How It Works and How to Choose
Related products
Lighting & Power FAQ Center
All XGW FAQs
Applications
Panels & offices
Constant-current drivers run ceiling LEDs efficiently with 0-10V dimming.
Street & outdoor
IP67 drivers power area and street luminaires in all weather.
Emergency egress
UL924 self-test drivers keep exits lit on mains loss.
Smart buildings
DALI-2/D4i drivers enable addressed control and energy data.
Constant Current vs Constant Voltage: The LED Driver Question
Most lighting inquiries boil down to matching driver output to the LED load.
| Output | Fixed current | Fixed voltage |
|---|---|---|
| Load | LED boards | LED strips |
| Wiring | Series string | Parallel strips |
| Dimming | PWM / 0-10V | 0-10V |
Pick constant current for boards, constant voltage for strips; verify total wattage and headroom.
Frequently Asked Questions
How do I size an LED driver?
Sum fixture watts, add 20% headroom, and match voltage (CV) or current (CC) to the LED spec.
What does UL924 mean for drivers?
It certifies emergency drivers that keep lights on for 90 minutes on mains failure.
Can DALI dim to off?
Yes. DALI scenes can dim to zero and store per-address settings on the bus.
What warranty do XGW drivers carry?
Up to 5 years on selected drivers, with global certification support.
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