Patent ID: 9237623
Filing Date: 2016-01-12
CPC Classification: H05B

Claim Text:
1. An illumination device, comprising: a plurality of light emitting diode (LED) chains configured to produce illumination for the illumination device at a chromaticity consistent with a chromaticity setting; a driver circuit coupled for generating and supplying a respective drive current to each of the plurality of LED chains for producing the illumination; a plurality of power converters coupled for supplying power to the driver circuit, wherein the power converters each comprise a maximum safe current level or a maximum safe power level, which varies with temperature; and a control circuit configured for determining a maximum lumens value that is safely producible by all LED chains at a predetermined safe temperature to achieve the chromaticity setting without exceeding the maximum safe current level or the maximum safe power level of the power converters at the predetermined safe temperature.