the light output of each wavelength on the array for the lifetime of the component

The company’s expertise covers semiconductor technology, packaging, thermal management, optics, electronic design, software and volume manufacturing.Enfis 'smart' LED array technology offers luminarie and fixture manufacturers unsurpassed optical white light output. Their ultra-bright, multi-watt, multi-wavelength 'smart' LEDs are designed so that each wavelength can be individually controlled and monitored. Each Enfis 'smart' LED array has active color temperature and heat-sensing components that control, calibrate and regulate the light output of each wavelength on the array for the lifetime of the component.

This innovative feature allows for direct in-situ monitoring of the LED junction temperature without the need for an external temperature sensor, thereby optimizing LED brightness and reliability throughout the LED's full operating temperature range. Targeted at high-power lighting applications, the LDS9001 and 9003 can independently monitor one and three LEDs, respectively.

The LDS9001 and 9003 provide a new, straightforward way to address thermal reliability constraints in high-power LED lighting applications. Utilizing LED-Sense?, these LED controllers provide real-time monitoring of the LED's junction temperature. Every few seconds, the LED junction temperature is measured in-situ and the current is adjusted on each LED channel using a programmable current versus temperature de-rating profile. This optimizes luminosity while ensuring reliable LED operation. System designers are therefore able to reduce guardbands they typically employ, while safely biasing the LEDs at higher currents over the LED's operating temperature range. As the temperature of the system increases above a pre-set point, the LD9001/9003 intelligently reduces the LED drive current, thereby ensuring that the LEDs operate in a specified safe temperature zone. As a result, at typical operating temperatures, the LEDs can be safely driven at higher currents resulting in greater luminance per LED. This enables the system lighting designer to reduce the number of LEDs by 10 - 20% while achieving the same total luminance. Given the relatively high cost of high-power LEDs, the overall system costs can be significantly reduced.