Invention Grant
- Patent Title: Light emitting diode thermal foldback control device and method
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Application No.: US15048388Application Date: 2016-02-19
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Publication No.: US09967939B2Publication Date: 2018-05-08
- Inventor: Michael W. Bandel , Ray M. Lazalier
- Applicant: Hubbell Incorporated
- Applicant Address: US CT Shelton
- Assignee: Hubbell Incorporated
- Current Assignee: Hubbell Incorporated
- Current Assignee Address: US CT Shelton
- Agency: Michael Best & Friedrich, LLP
- Main IPC: H05B33/08
- IPC: H05B33/08

Abstract:
A thermal foldback control circuit electrically connected to a light emitting diode (LED) driver. The thermal foldback control circuit includes a voltage divider and a shunt regulator. The voltage divider includes a first resistor component, a second resistor component in a series-type configuration with the first resistor component, and an output. The first resistor component has a first resistance and the second resistor component has a second resistance that varies in response to a temperature at a reference point. The output is configured to output a reference voltage based on the first resistance and the second resistance. The shunt regulator is in a parallel-type configuration with the voltage divider and is configured to receive the reference voltage and control a driver output of the LED driver based on the reference voltage.
Public/Granted literature
- US20160249428A1 LIGHT EMITTING DIODE THERMAL FOLDBACK CONTROL DEVICE AND METHOD Public/Granted day:2016-08-25
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