Daffer McDaniel LLP
Illumination device and method for determining a maximum lumens that can be safely produced by the illumination device to achieve a target chromaticity
An illumination device and methods are provided herein for avoiding over-current and over-power conditions in one or more power converters included within the illumination device. The illumination device may generally include a plurality of light emitting diode (LED) chains, a driver circuit, at least one power converter, and a control circuit. The LED chains may produce illumination for the illumination device at a chromaticity consistent with a chromaticity setting. The power converter(s) may be coupled for powering the LED chains, and may each comprise a maximum safe current level or a maximum safe power level, which varies with temperature. The control circuit may be configured for determining a maximum lumens value that can be safely produced 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 converter(s) at the predetermined safe temperature.
Ketra, Inc.
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Joseph Jivan James David Jason Ryan Matthew
Savage Luu Knapp Lewis Bocock