US 12,034,437 B2
Signal transmission device, electronic device and vehicle
Takeshi Kikuchi, Kyoto (JP); Masato Nishinouchi, Kyoto (JP); Akio Sasabe, Kyoto (JP); and Daiki Yanagishima, Kyoto (JP)
Assigned to Rohm Co., Ltd., Kyoto (JP)
Appl. No. 18/024,086
Filed by ROHM CO., LTD., Kyoto (JP)
PCT Filed Sep. 16, 2021, PCT No. PCT/JP2021/034072
§ 371(c)(1), (2) Date Mar. 1, 2023,
PCT Pub. No. WO2022/070944, PCT Pub. Date Apr. 7, 2022.
Claims priority of application No. 2020-163734 (JP), filed on Sep. 29, 2020.
Prior Publication US 2023/0327662 A1, Oct. 12, 2023
Int. Cl. H02P 29/024 (2016.01); H03K 17/18 (2006.01)
CPC H03K 17/18 (2013.01) [H02P 29/0241 (2016.02)] 10 Claims
OG exemplary drawing
 
1. A signal transmission device configured to transmit a driving signal for a power transistor from a primary circuit system to a secondary circuit system while isolating between the primary and secondary circuit systems, comprising:
a first fault detection circuit configured to detect a fault in the primary circuit system;
a second fault detection circuit configured to detect a fault in the secondary circuit system;
a first signal transmission path configured to transmit a result of detection by the second fault detection circuit from the secondary circuit system to the primary circuit system while isolating between the primary and secondary circuit systems; and
a self-test circuit configured to perform a self-test on each of the first fault detection circuit, the second fault detection circuit, and the first signal transmission path.