Title:
SEMICONDUCTOR DEVICE, LIGHT EMITTING DEVICE, AND VEHICLE
Document Type and Number:
WIPO Patent Application WO/2024/079980
Kind Code:
A1
Abstract:
A semiconductor device 1 comprises: a switch element 11(n) connected in parallel to a light emitting element 2(n); a detection circuit 13(n) that compares the voltage V(n+1)-V(n) between both ends of the switch element 11(n) to a prescribed threshold voltage Vth and generates a detection signal S1(n); and a failure diagnosis circuit 22(n) that performs diagnosis of whether the switch element 11(n) is stuck in an OFF state by monitoring the detection signal S1(n) at a timing when the drive signal VG(n) of the switch element 11(n) is at a logic level when ON.
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Inventors:
TAKAGIMOTO SHINSUKE (JP)
Application Number:
PCT/JP2023/029700
Publication Date:
April 18, 2024
Filing Date:
August 17, 2023
Export Citation:
Assignee:
ROHM CO LTD (JP)
International Classes:
H05B45/54; B60Q11/00; H05B45/14; H05B45/325; H05B45/44; H05B47/105; H05B47/16; H05B47/23; H05B47/25
Attorney, Agent or Firm:
SANO PATENT OFFICE (JP)
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