Electronic Design
50-W LED Power Supply Comes In Three Dimming Options

50-W LED Power Supply Comes In Three Dimming Options

Green Watt Power’s GLCD 50-W, constant-current, dimmable LED power supplies include 0- to 10-V, PWM, and external potentiometer dimming options. Dimming range is 10% to 100%. All models have a universal 100- to 277-V ac input with nominal output-current values of 500 mA, 700 mA, 1.05 A, 1.4 A, 1.75 A, 2.1 A, and 2.8 A. Power factor correction is 0.95, and total harmonic noise drops under 20%. Ripple and noise comes out to 5% of IOUT. The supplies have a 200-ms rise time and two-second setup time. Overshoot and undershoot response is ±10%. Input-to-output withstand voltage measures 3750 V ac. Operating temperature ranges from −35° to 70°C ambient. Mean time between failure per MIL-HDBK-217F stretches to 200k hours. All models include overvoltage, short-circuit, and overtemperature protection (shutdown with autorecovery). The GLCD comes in a 5.98- by 1.73- by 1.25-in. case.

GREEN WATT POWER (a div. of CALEX MFG. CO. INC.)

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