US 12,316,307 B2
Switching device and electronic circuit
Masashi Hayashiguchi, Kyoto (JP); and Kazuhide Ino, Kyoto (JP)
Assigned to ROHM CO., LTD., Kyoto (JP)
Filed by ROHM CO., LTD., Kyoto (JP)
Filed on Apr. 23, 2024, as Appl. No. 18/643,469.
Application 18/643,469 is a continuation of application No. 18/306,713, filed on Apr. 25, 2023, granted, now 12,068,741.
Application 18/306,713 is a continuation of application No. 17/722,967, filed on Apr. 18, 2022, granted, now 11,728,801, issued on Aug. 15, 2023.
Application 17/722,967 is a continuation of application No. 17/070,496, filed on Oct. 14, 2020, granted, now 11,336,275, issued on May 17, 2022.
Application 17/070,496 is a continuation of application No. 16/270,248, filed on Feb. 7, 2019, granted, now 10,826,481, issued on Nov. 3, 2020.
Application 16/270,248 is a continuation of application No. 15/037,592, granted, now 10,263,612, issued on Apr. 16, 2019, previously published as PCT/JP2014/080497, filed on Nov. 18, 2014.
Claims priority of application No. 2013-240105 (JP), filed on Nov. 20, 2013.
Prior Publication US 2024/0275373 A1, Aug. 15, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H02H 7/00 (2006.01); G01R 19/00 (2006.01); H01L 23/00 (2006.01); H01L 23/31 (2006.01); H01L 23/373 (2006.01); H01L 25/07 (2006.01); H01L 25/18 (2023.01); H02H 3/20 (2006.01); H02H 9/04 (2006.01); H02M 7/5387 (2007.01); H03K 17/081 (2006.01); H03K 17/082 (2006.01); H03K 17/12 (2006.01); H02M 1/00 (2006.01)
CPC H03K 17/08104 (2013.01) [G01R 19/0092 (2013.01); H01L 23/3107 (2013.01); H01L 23/3735 (2013.01); H01L 24/40 (2013.01); H01L 24/49 (2013.01); H01L 24/73 (2013.01); H01L 25/072 (2013.01); H01L 25/18 (2013.01); H02H 3/202 (2013.01); H02H 9/046 (2013.01); H02M 7/5387 (2013.01); H03K 17/0822 (2013.01); H03K 17/122 (2013.01); H01L 24/33 (2013.01); H01L 24/37 (2013.01); H01L 24/48 (2013.01); H01L 2224/0603 (2013.01); H01L 2224/291 (2013.01); H01L 2224/32225 (2013.01); H01L 2224/32245 (2013.01); H01L 2224/33181 (2013.01); H01L 2224/371 (2013.01); H01L 2224/40095 (2013.01); H01L 2224/40225 (2013.01); H01L 2224/48091 (2013.01); H01L 2224/48106 (2013.01); H01L 2224/48227 (2013.01); H01L 2224/48247 (2013.01); H01L 2224/4903 (2013.01); H01L 2224/49111 (2013.01); H01L 2224/49175 (2013.01); H01L 2224/73221 (2013.01); H01L 2224/73263 (2013.01); H01L 2224/73265 (2013.01); H01L 2224/83801 (2013.01); H01L 2224/84801 (2013.01); H01L 2924/00014 (2013.01); H01L 2924/10272 (2013.01); H01L 2924/12032 (2013.01); H01L 2924/1305 (2013.01); H01L 2924/13055 (2013.01); H01L 2924/13091 (2013.01); H01L 2924/181 (2013.01); H01L 2924/19107 (2013.01); H02M 1/0009 (2021.05); H03K 2217/0027 (2013.01); Y02B 70/10 (2013.01)] 6 Claims
OG exemplary drawing
 
1. An electronic circuit comprising:
a switching device adapted to flow a current;
an overcurrent detection circuit capable of detecting whether the current flowing through the switching device is an overcurrent; and
an overcurrent protection circuit capable of blocking the current flowing through the switching device if the detection circuit detected the current is an overcurrent,
wherein the switching device comprises:
a switching semiconductor chip having a gate electrode, a source electrode and a drain electrode;
a gate terminal electrically connected to the gate electrode;
a source terminal electrically connected to the source electrode;
a drain terminal electrically connected to the drain electrode;
a sense source terminal electrically connected to the source electrode;
a conductor having a resistance and is interposed in a current path between the source terminal and the source electrode, and is interposed in a current path between the sense source terminal and the source electrode,
the sense source terminal is not directly connected to the source electrode, but is indirectly connected to the source electrode through the conductor, and
the sense source terminal is electrically connected to the overcurrent detection circuit.