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Thomas Research Products |
LED DRIVER CV AC/DC 54V 1.75A |
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Thomas Research Products |
LED DRIVER CV AC/DC 85V 900MA |
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Thomas Research Products |
LED DRIVER CC AC/DC 14-43V 1.4A |
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Thomas Research Products |
LED DRIVER CC AC/DC 27-54V 2.8A |
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Thomas Research Products |
LED DRIVER CC AC/DC 19-56V 450MA |
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Thomas Research Products |
LED DRIVER CC AC/DC 9-27V 2.3A |
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Thomas Research Products |
LED DRIVER CC AC/DC 18-54V 700MA |
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Thomas Research Products |
LED DRIVER CC AC/DC 10-25V 1.2A |
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Thomas Research Products |
LED DRIVER CC AC/DC 14-40V 1.1A |
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Thomas Research Products |
LED DRIVER CC AC/DC 21-63V 3.15A |
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Thomas Research Products |
LED DRIVR CC AC/DC 95-285V 700MA |
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Thomas Research Products |
LED DRIVER CV AC/DC 213V 450MA |
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Thomas Research Products |
LED DRIVER CC AC/DC 6-18V 5.35A |
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Thomas Research Products |
LED DRIVER CC AC/DC 13-38V 3.15A |
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Thomas Research Products |
LED DRIVER CC AC/DC 31-92V 1.05A |
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Thomas Research Products |
LED DRIVER CC AC/DC 19-38V 2A |
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Thomas Research Products |
LED DRIVER CV AC/DC 111V 450MA |
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Thomas Research Products |
LED DRIVER CV AC/DC 49V 2.45A |
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Thomas Research Products |
LED DRIVER CC AC/DC 21-61V 2.45A |
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Thomas Research Products |
LED DRIVER CC AC/DC 12-36V 1.05A |
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LED drivers are electronic devices that regulate power to LED light sources. They convert AC mains voltage to DC current/voltage required by LEDs, ensuring stable light output and longevity. Modern lighting systems rely on LED drivers for energy efficiency (up to 95% efficiency), thermal management, and dimming control in applications ranging from consumer electronics to industrial lighting.
| Type | Function Features | Application Examples |
|---|---|---|
| Constant Current (CC) | Provides fixed output current (e.g., 350mA/700mA), adjustable voltage range | High-power LED streetlights, architectural lighting |
| Constant Voltage (CV) | Maintains fixed output voltage (e.g., 12V/24V DC), variable current | LED strips, downlights, backlighting systems |
| Dimmable Drivers | Supports 0-10V/PWM/digital dimming protocols | Smart home lighting, theater stage lighting |
| Offline Drivers | Direct AC mains input without external transformer | Industrial LED floodlights, retrofit bulbs |
Typical construction includes: - Die-cast aluminum housing with IP65+ protection - Input EMI filter and bridge rectifier - Power factor correction (PFC) circuit - Isolated flyback/forward converter topology - Output current sensing resistor network - Thermal shutdown and overvoltage protection (OVP) circuits - Optional DALI/DMX communication interfaces
| Parameter | Typical Range | Significance |
|---|---|---|
| Input Voltage | 90-305V AC / 12-48V DC | Determines global compatibility |
| Output Current | 100mA-2.5A | Matches LED string requirements |
| Efficiency | 85-96% | Impacts energy consumption |
| Power Factor | 0.85-0.99 | Reduces grid reactive power |
| Operating Temp | -40 C to +85 C | Environmental reliability |
| Manufacturer | Product Series | Key Features |
|---|---|---|
| Philips Xitanium | XF2G121 | 105W, 0-10V dimming, 5-year warranty |
| Osram OT | OTi DALI | DALI-2 certified, 16A output |
| Mean Well | HBL-40A | 40W constant current, IP67 rating |
| TI LM | LM3445 | Triac dimmable, 150W offline driver |
Key developments include: - Integration with wireless protocols (Bluetooth Mesh, Zigbee) - 80Plus Titanium efficiency standards adoption - GaN/SiC semiconductor implementation - Predictive maintenance capabilities via IoT connectivity - EU Ecodesign Lot 20 compliance requirements