US 11,876,508 B2
Switch device
Toru Takuma, Kyoto (JP)
Assigned to Rohm Co., Ltd., Kyoto (JP)
Filed by Rohm Co., Ltd., Kyoto (JP)
Filed on Dec. 16, 2021, as Appl. No. 17/552,783.
Application 17/552,783 is a division of application No. 16/218,724, filed on Dec. 13, 2018, granted, now 11,239,837.
Claims priority of application No. 2017-240790 (JP), filed on Dec. 15, 2017; application No. 2017-251264 (JP), filed on Dec. 27, 2017; and application No. 2018-198509 (JP), filed on Oct. 22, 2018.
Prior Publication US 2022/0109439 A1, Apr. 7, 2022
Int. Cl. H02H 3/08 (2006.01); H02H 9/02 (2006.01); H03K 17/082 (2006.01); B60R 16/03 (2006.01); G01K 7/16 (2006.01); H03K 17/16 (2006.01); H02H 6/00 (2006.01); H02M 3/156 (2006.01); H02H 5/04 (2006.01); G01K 7/01 (2006.01)
CPC H03K 17/0828 (2013.01) [B60R 16/03 (2013.01); G01K 7/01 (2013.01); G01K 7/16 (2013.01); H02H 3/08 (2013.01); H02H 5/04 (2013.01); H02H 6/00 (2013.01); H02M 3/156 (2013.01); H03K 17/168 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A switch device comprising:
a switching element arranged to connect/disconnect a current path from a power supply terminal to a ground terminal via a load, the switching element being a high side switch connected between the power supply terminal and the load;
an intermittent control unit arranged to intermittently drive the switching element when an abnormality is detected;
an output voltage monitoring portion arranged to monitor an output voltage applied to the load and to disable the intermittent control unit until the output voltage increases to a power supply voltage applied to the power supply terminal, and
a signal path for transmitting a signal from the output voltage monitoring portion to the intermittent control unit.