Chroma 63110A LED Simulating DC Load Module, 2A, 300V, 100W, 2 channel

The Chroma 63110A DC Electronic Load Module is the first load to offer an LED operating mode for simulating LED loading. The 63110A Load Module requires either a 6312A or 6314A DC Electronic Load Mainframe.

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.

Key features of the Chroma 63110A DC Load Module include:

• Unique LED mode for LED driver test
• Programmable LED operating resistance (Rd)
• Programmable internal resistance (Rr) for simulating LED ripple current
• Fast response for PWM dimming test
• Up to eight channels in one mainframe
• 16-bit precision voltage and current measurement with dual-range
• Full Protection: OV, OC, OP and OT protection

Before the advent of the Chroma 63110A, LED's were typically tested one of the following ways:

• With LED's
• Using resistors for loading
• Using electronic loads in Constant Resistance mode or Constant Voltage mode.

Each of those methods has disadvantages. For example, when using a resistor as loading, the V-I curve of the resistor may not able to simulate the V-I curve of the LED, which may cause the LED driver to not start up due to the difference in V-I characteristic between the resistors and the LEDs. When using Electronic Loads, the CR and CV mode settings are set for when the LED is under stable operation and therefore, is unable to simulate turn on or PWM brightness control characteristics. This may cause the LED driver to function improperly or trigger it’s protection circuits. These testing requirements can be achieved when using a LEDs as a load; however, issues regarding the LED aging as well as different LED drivers may require different types of LEDs or a number of LEDs. This makes it inconvenient for mass production testing.

The Chroma 63110A DC Electronic Load Module is the first load to offer an LED operating mode for simulating LED loading.