US 12,284,060 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. 18/022,807
Filed by ROHM CO., LTD., Kyoto (JP)
PCT Filed Sep. 15, 2021, PCT No. PCT/JP2021/033882
§ 371(c)(1), (2) Date Feb. 23, 2023,
PCT Pub. No. WO2022/065150, PCT Pub. Date Mar. 31, 2022.
Claims priority of application No. 2020-159637 (JP), filed on Sep. 24, 2020.
Prior Publication US 2023/0318882 A1, Oct. 5, 2023
Int. Cl. H03K 17/567 (2006.01); H02M 1/08 (2006.01); H03K 17/691 (2006.01); H03K 19/173 (2006.01); H04L 25/02 (2006.01)
CPC H04L 25/0266 (2013.01) [H02M 1/08 (2013.01); H03K 17/567 (2013.01); H03K 17/691 (2013.01); H03K 19/173 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A signal transmission device configured to transmit a driving signal for a gate-driving transistor between a primary circuit system and a secondary circuit system while isolating between the primary and secondary circuit systems, the signal transmission device comprising:
a first external terminal configured such that a ground terminal of the secondary circuit system is connected thereto;
a second external terminal configured such that a terminal voltage thereat varies according to whether the first external terminal is in an open state; and
an open detection circuit configured to monitor a terminal voltage at the second external terminal to perform open detection with respect to the first external terminal.