公开(公告)号：USRE49137E1

公开(公告)日：2022-07-12

申请号：US16178185

申请日：2018-11-01

Applicant: Lutron Technology Company LLC

Inventor： Jason Lewis ,  Ryan Matthew Bocock ,  Joseph Savage ,  Jivan James Luu ,  David Knapp

IPC: H05B33/08 ,  H05B45/28 ,  H05B45/50 ,  H05B45/44 ,  H05B45/18 ,  H05B45/375 ,  H05B45/12 ,  H05B45/3725

Abstract: 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 include at least a plurality of light emitting diode (LED) chains, a driver circuit, at least one power converter, and a control circuit. In some embodiments, the control circuit may be generally configured for determining a maximum safe current level and/or a maximum safe power level attributed to the power converter(s) at a present operating temperature, and for adjusting respective drive currents supplied to the plurality of LED chains by the driver circuit, so as not to exceed the maximum safe current level or the maximum safe power level at the present operating temperature. In some embodiments, a temperature sensor may be included within the illumination device for measuring the operating temperature presently associated with the power converter(s).