As a constant current source, the LED driver has an output voltage range with a constant output current. LED drivers are usually tested in one of the following ways:
- With LEDs
- Using resistors for loading
- Using Electronic Loads in Constant Resistance (CR) mode, or Constant Voltage (CV) mode
However all these testing methods each have their own disadvantages.
Chroma has created the industries’ first LED operating mode for simulating LED loading with our 63110A. By setting the LED driver’s output voltage, and current, the Electronic Load can simulate the LED’s loading characteristics. The LED’s forward voltage and operating resistance can also be set to further adjust the loading current and ripple current to better simulate LED characteristics. The 63110A design also has increased bandwidth to allow for PWM dimming testing.