USB-Programmable 50W LED Drivers

Thomas Research Products has added the 50W LED50WPR2T5 series of programmable LED drivers. Users can set maximum current for these dimmable constant-current drivers by USB cable connection, no computer needed--just USB +5V. The programming cable is a 1m USB cable with 3-pin connector and programming button. Resistance is marked on the label. Nine standard current outputs from 0.5A to 1.4A are available and other output currents and cables are available upon request.

These LED drivers dim to 10% with 0-10V dimming. They operate with a typical efficiency of 83% and have an input voltage range of 120- to 277-Vac, nominal (108- to 305-Vac min/max). Power factor is ≥ 0.90 at full load, 120Vac-277Vac input. Inrush current is < 20.0 Amps at full output Load regulation is ±5% at maximum rated current and THD is 60% full load. Output ripple current is 35% maximum. Start-up time is typically 1 second. These LED drivers include over-voltage and short-circuit protection with auto recovery.

Environmental Specifications include a maximum case temperature of 89 degrees C and a minimum starting temperature of -20 degrees C. These convection-cooled power supplies are rated for humidity up to 90% RH. They have an estimated lifetime of 50,000 hours at 75 degrees C. and am MTBF over 1q00,000 hours. They are FCC 47CFR Part 15 Class B compliant.