US 12,395,167 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)
Filed by Rohm Co., Ltd., Kyoto (JP)
Filed on May 23, 2024, as Appl. No. 18/673,151.
Application 18/673,151 is a continuation of application No. 18/024,086, previously published as PCT/JP2021/034072, filed on Sep. 16, 2021.
Claims priority of application No. 2020-163734 (JP), filed on Sep. 29, 2020.
Prior Publication US 2024/0322816 A1, Sep. 26, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H02P 29/024 (2016.01); H03K 17/18 (2006.01)
CPC H03K 17/18 (2013.01) [H02P 29/0241 (2016.02)] 20 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 and the second fault detection circuit, wherein
the first signal transmission path includes a transformer.