What Is an LED Driver? How It Works and How to Choose One
Conversion, regulation, protection and the specs that matter — output window, efficiency, PF, dimming, tc.
LED Driver Knowledge Center
Everything we know about specifying LED drivers, written by the XGW R&D team for luminaire OEMs, specifiers and contractors. Each guide answers a question we get asked in real projects — no filler, and no numbers we cannot stand behind.
What Is an LED Driver?
The fundamentals: why an LED needs a driver, what the driver actually regulates, and the specifications that decide service life.
Constant Current vs Constant Voltage LED Drivers
The decision rule, how to read each type of label, and what a mismatch actually costs.
Choosing an IP67 LED Driver: Beyond the Waterproof Rating
Why the IP code alone does not predict outdoor survival.
IP Ratings & Environment
Where the driver lives determines how long it lives: ingress protection, ambient temperature and surge exposure.
Choosing an IP67 LED Driver: Beyond the Waterproof Rating
Potting, cable glands, breathing and the failure modes behind a passing IP test.
Control Protocols: DALI 2.0, D4i, Zhaga
The digital layer. Which protocol belongs in which project, and how the three standards fit together.
DALI 2.0 vs DALI 1: What Actually Changed
Certification, DT8 colour control and what it means when specifying drivers.
Zhaga Book 18 Explained: The Socketable LED Interface
Editions 1 to 3, Zhaga-D4i, and what to check before you specify.
Emergency Lighting
Drivers that keep the light on when the mains does not — battery chemistry, duration and code compliance.
What Is an Emergency LED Driver? How It Works
Changeover, monitoring and self-test, explained for specifiers.
Emergency LED Driver Selection Guide
Power, battery, codes (EN 1838, UL 924) and the questions to settle before ordering.
LiFePO4 vs NiCd Emergency LED Driver Battery
The complete comparison: cycle life, temperature behaviour, cost of ownership.
Start with the product range
- All LED Drivers — IP20/IP67, constant current and constant voltage, 12-1800W
- DALI 2.0 LED Drivers
- Emergency LED Drivers
- Zhaga Book 18 Socket — and NEMA socket (ANSI C136.41)
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