A DALI CC (constant-current) driver is an AC/DC power supply designed to deliver a precise and consistent current (e.g., 250 mA–1,400 mA) to LED fixtures, while enabling dimming via the DALI (Digital Addressable Lighting Interface) protocol—an industry-standard (IEC 62386) for intelligent, addressable lighting control
- Input Voltage: Typically 100–305 VAC across all varieties
- Adjustable Output Current: Many drivers T-set between, say, 100–1,050 mA or have presets selectable via DIP switches or NFC—several brands offer ranges like 250–700 mA, 350–1,050 mA
- Output Voltage Range: Supports various LED configurations (e.g., 9–56 V) depending on current setting and power rating
- Dimming Protocol:
- DALI-1 or DALI-2 digital dimming (compliant with IEC 62386, up to DT8)
- Some also support Push-DIM, 1–10 V, PWM dimming, or NFC configuration
- Dimming Performance: Flicker-free at high PWM frequencies, dimming to 0.1% or lower (even 0.01%)
- Protections: Built-in defences against short-circuit, overload, over-temperature, over-voltage, no-load, and often surge protection; many feature active PFC and <0.5 W standby loss
- Efficiency & PF: High efficiency (85–>90%), power factor >0.9 (often >0.95)
- Build Quality: Available in slim plastic or rugged metal housings; some IP65/67-rated for outdoor use
- Certifications & Lifetime: Compliant with DALI-2, IEC, UL8750, EN61347; typical lifespans ≥50 000 hours; warranty 3–5 years
