Invention Grant
- Patent Title: Overshoot protection circuit for LED lighting
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Application No.: US15677000Application Date: 2017-08-14
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Publication No.: US09967946B1Publication Date: 2018-05-08
- Inventor: Chandra Prakash Tiwari , Hendrik Boezen , Henricus Cornelis Johannes Büthker
- Applicant: NXP B.V.
- Applicant Address: US CA San Jose
- Assignee: NXP B.V.
- Current Assignee: NXP B.V.
- Current Assignee Address: US CA San Jose
- Agent Charles E. Bergere; Charlene Jacobsen
- Main IPC: H05B33/08
- IPC: H05B33/08 ; H05B37/02

Abstract:
For an LED lighting application, overshoot-protection circuitry prevents an LED controller, such as a matrix lighting controller (MLC) that controls an array of LEDs, from falsely detecting an open-circuit condition in an LED controlled by the LED controller, by limiting the magnitude of an overshoot voltage (due to long-wire parasitic inductances) from occurring when a switch in the LED controller that is used to control the LED is turned off.
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