Constant current board demonstrates the high power density of the PRM with current accuracy of 99.7% across the load range.
Vicor's V.I Chip subsidiary has released a constant current (CC) PRM regulator demonstration board for light emitting diode (LED) applications such as street and stadium lighting, high-end projectors, active outdoor advertising and architectural installations The board provides a precisely regulated current as required for direct-drive multiple-LED applications where the intensity and brightness are controlled by regulating the current through the LEDs.
The board can be used to provide adjustable current up to 240W (5A/48V) when employed as an stand-alone nonisolated source or can be combined with the range of VTM transformers to provide an adjustable isolated current up to 100A.
A PRM+VTM pair uses less than 1W for every 1000 lumen generated by the LEDs for high performance applications.
This solution is a perfect complement to using BCM bus convertors with low voltage driver ICs for lower power applications such as LED TV backlighting.
The constant current board demonstrates the high power density of the PRM with current accuracy of 99.7% across the load range.
The board has Kelvin connections for measuring the efficiency of the V.I Chip components independent of load connect losses.
Oscilloscope probe jacks are available for measuring output voltage, including output voltage ripple.
The board has fused PRM inputs, provision for mounting an optional V.I Chip pushpin heatsink, and system enable and disable.
