LTH480-56
480W high-power constant current LED driver with 5600mA output, 57-86V range, DALI dimming for industrial lighting.
Product Overview
Description
The LTH480-56 from TDK-Lambda is a high-power 480W constant current LED driver designed for demanding industrial, stadium, and large-area lighting applications. Delivering a regulated 5600mA output current with a 57-86V compliance voltage range, this driver can power large LED arrays for high-bay, flood, and sports lighting. The driver achieves up to 95% efficiency, minimizing energy costs and heat generation in large fixtures. DALI (Digital Addressable Lighting Interface) dimming enables integration into intelligent lighting management systems with individual address control. The rugged IP65-rated metal case withstands harsh industrial and outdoor environments. Comprehensive protection features and 100,000-hour rated lifetime ensure reliable operation in critical lighting applications.
Product Series
LTH
Primary Application
Stadium and arena lighting
Key Features
- 480W constant current 5600mA output
- Wide 57-86V output voltage range
- High efficiency 95%
- Universal 90-305VAC input
- DALI and 0-10V dimming
- Active power factor correction
- IP65 rated for outdoor use
- 100,000 hour rated lifetime
Specifications
| outputPower | 480W |
|---|---|
| outputCurrent | 5600mA |
| outputVoltageRange | 57-86V |
| efficiency | 95% |
| inputVoltage | 90-305VAC |
| powerFactor | >0.95 |
| thd | <15% |
| dimming | DALI, 0-10V |
| operatingTemperature | -40°C to +60°C |
| mtbf | 100,000 hours |
| protection | IP65 |
Applications
Stadium and arena lighting
Electronic system design
High-mast flood lighting
Electronic system design
Industrial high-bay lighting
Industrial automation and control
Large area lighting
Electronic system design
Sports field lighting
Electronic system design
Port and terminal lighting
Electronic system design
Mining and heavy industrial
Industrial automation and control
Airport apron lighting
Electronic system design
FAE Expert Insights
"The LTH480-56 is a beast of an LED driver for serious industrial lighting. The 480W power level handles the largest LED arrays for stadiums and high-mast applications. The 95% efficiency is exceptional - at this power level, every percentage point matters for thermal management. The DALI interface is a game-changer for large installations - you can individually address and control hundreds of fixtures from a central system. The IP65 rating means it can be used in exposed outdoor locations without additional protection. I've specified these for port lighting, mining operations, and sports stadiums with excellent results. The 5600mA current is perfect for the latest high-power LED modules. One consideration is the size and weight - this is a substantial unit requiring proper mounting. For large-scale industrial lighting, this driver delivers the power and reliability needed."
High-power driver with DALI control for large-scale industrial and stadium lighting
— Tom Anderson, BeiLuo
Frequently Asked Questions
What is DALI dimming and how does it work?
DALI (Digital Addressable Lighting Interface) is a two-wire digital communication protocol for lighting control: Two-wire bus - DALI uses two wires (no polarity) that carry both power and data; Individual addressing - each driver has a unique address (0-63) for individual control; Grouping - drivers can be assigned to groups (0-15) for zone control; Scenes - up to 16 pre-programmed lighting scenes can be stored; Dimming range - 0.1% to 100% in 254 steps (logarithmic curve); Broadcast - commands can be sent to all devices simultaneously. The LTH480-56 includes a DALI interface that allows: Individual on/off and dimming control; Status feedback (lamp failure, driver temperature); Energy monitoring (with compatible controllers); Integration with building management systems. DALI is ideal for large installations where centralized control and monitoring are required.
Use DALI for large installations requiring individual fixture control, grouping, and integration with building management systems.
How many LEDs can the LTH480-56 drive?
The LTH480-56 can drive large LED arrays depending on LED forward voltage: For 3V LEDs: 19 to 28 LEDs in series (57-86V range); For 6V LEDs: 10 to 14 LEDs in series; For high-voltage LEDs (12V): 5 to 7 LEDs in series. The 5600mA current rating is suitable for high-power LED arrays: 28 x 3V LEDs at 5.6A = 470W (within 480W rating); Multiple parallel strings possible with current balancing; Total LED power should not exceed 480W. Example configurations: Stadium floodlight with 24 x 20W LED modules; High-bay fixture with 28 x 15W LEDs; Large area lighting with multiple driver-fed zones. The wide 57-86V range accommodates various LED configurations while maintaining constant current regulation. Always verify LED forward voltage at operating temperature.
Calculate total LED string voltage and ensure it falls within 57-86V range. Total LED power should not exceed 480W.
What mounting options are available for the LTH480-56?
The LTH480-56 offers flexible mounting options for various fixture designs: Base mounting - four M5 mounting holes on the base for horizontal mounting to a heatsink or fixture chassis; Side mounting - two M5 mounting holes on each side for vertical mounting; Cable gland entry - waterproof cable glands for AC input and DC output wiring; The IP65 rating requires proper sealing of all cable entries. Mounting guidelines: Mount on a thermally conductive surface to aid heat dissipation; Maintain minimum clearances around the driver for airflow; Use thread-locking compound on mounting screws for vibration-prone applications; Ensure cable glands are properly tightened to maintain IP65 rating. The driver weighs approximately 3.5kg, so mounting hardware must be rated for the weight. For outdoor installations, ensure the mounting location allows water drainage and doesn't create standing water around the driver.
Select mounting orientation based on fixture design and thermal management requirements. Ensure proper sealing for IP65 protection.
Can the LTH480-56 operate in constant voltage mode?
The LTH480-56 is primarily a constant current (CC) LED driver, but it has a constant voltage (CV) limit that affects operation: Normal operation - the driver maintains constant 5600mA current while voltage varies within 57-86V range; Voltage limit - if LED load voltage exceeds 86V, driver enters CV mode and reduces current to maintain 86V; This protects the driver from overvoltage conditions. The driver cannot be programmed for fixed CV output like a standard power supply. For applications requiring CV operation for LED strips or other loads, consider: Using a standard AC-DC power supply like the RWS series; Selecting LED drivers with CV mode capability from other series; Adding current limiting resistors to LED strips for use with CV supplies. The CC operation is preferred for high-power LED arrays as it provides consistent LED current and brightness regardless of LED voltage variations.
Use the LTH480-56 for constant current LED arrays. For constant voltage applications, select appropriate AC-DC power supplies.
What is the surge protection rating of the LTH480-56?
The LTH480-56 includes high-level surge protection for outdoor and industrial environments: IEC 61000-4-5 Level 4 - withstands 4kV line-to-line and 2kV line-to-earth surges; Ring wave immunity - protection against utility switching transients; Common mode and differential mode protection - comprehensive surge suppression; High-energy varistors - clamp high-voltage transients; The protection is designed for outdoor lighting applications where lightning-induced surges are common. For locations with extreme lightning activity: External surge protective devices (SPDs) at the panel level are recommended; Type 2 SPDs provide additional protection for the installation; Proper grounding of the fixture and driver is essential. The built-in protection ensures reliable operation through typical electrical disturbances, but severe direct lightning strikes may still cause damage. The driver's robust protection design is a key feature for outdoor and industrial applications.
For outdoor installations in high-lightning areas, add external SPDs in addition to the driver's built-in protection.