Constant current LED demo board

Opto-Electronics

6 August 2008 Opto-Electronics

VI Chip, a subsidiary of Vicor, has announced a constant current 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 multiLED 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 240 W (5 A at 48 V) when employed as a standalone non-isolated source or can be combined with the range of VTMTM transformers to provide an adjustable isolated current up to 100 A.

A PRM+VTM pair uses less than 1 W for every 1000 Lumens generated by the LEDs for high performance applications. This solution is an ideal complement to using BCMTM bus converters 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 VI 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 pushpin heatsink, and system enable and disable.

Share this article:

Front panels for electronics
Seven Labs Technology Opto-Electronics
In the world of electronics, the significance of a well-designed front panel cannot be overstated as it serves not only as the first point of interaction between users and devices, but also plays a crucial role in the functionality and aesthetics of electronic products.

Read more...

Cree: Illuminating the future of LED technology
Altron Arrow Editor's Choice Opto-Electronics
As a pioneer in this field, Cree LED has been instrumental in shaping the LED landscape, driving innovation and performance in this sector.

Read more...

New optical sensors for object detection
Opto-Electronics
A special feature of the Würth Elektronik sensors is that they filter out visible light up to 800 nm, rather than just up to 700 nm, like many other sensors of this type.

Read more...

HTML5 WebPanel with Linux, Android, or AutomationBrowser
Vepac Electronics Opto-Electronics
Having a front protection rating of IP65, and additional features such as Wi-Fi, Bluetooth, USB, RS232 integrated, these panels are an excellent solution for most industrial applications.

Read more...

Laser control for smart glasses
Opto-Electronics
TDK has developed the world’s first full-colour laser control device for 4K smart glasses using lithium niobate thin film.

Read more...

PVision introduces interactive PoS to South Africa
Opto-Electronics
Recently, PVision partnered with Nexmosphere, a company that transforms any digital display into an engaging experience using sensors and controls, to bring the next level of point-of-sale digital displays to consumers.

Read more...

InGaAs and SWIR surveillance
Opto-Electronics
Sensing in the SWIR range (wavelengths from 0,9 to 1,7 microns) has only recently been made practical by the development of Indium Gallium Arsenide (InGaAs) sensors.

Read more...

Touchscreen interfaces for industrial applications
Rugged Interconnect Technologies Opto-Electronics
Being protected from water and dust ingress, scratches, abrasions, and metallic dust makes them suitable for installation into harsh environments.

Read more...

Categories

Opto-Electronics

Constant current LED demo board

Further reading:

Publications by Technews