US 12,136,913 B2
Solid-state multi-channel protection circuit
Nikola Stojakovic, Windsor (CA); and John Caputo, Canfield, OH (US)
Assigned to APTIV TECHNOLOGIES AG, Schaffhausen (CH)
Filed by Aptiv Technologies AG, Schaffhausen (CH)
Filed on Jun. 16, 2022, as Appl. No. 17/841,785.
Claims priority of provisional application 63/212,142, filed on Jun. 18, 2021.
Prior Publication US 2022/0407410 A1, Dec. 22, 2022
Int. Cl. H03K 17/082 (2006.01); H02H 1/00 (2006.01); H02H 7/20 (2006.01); H03K 17/042 (2006.01); H02M 1/00 (2006.01); H02M 1/32 (2007.01); H03K 17/08 (2006.01)
CPC H03K 17/0822 (2013.01) [H02H 1/0038 (2013.01); H02H 7/20 (2013.01); H03K 17/04213 (2013.01); H02M 1/0009 (2021.05); H02M 1/327 (2021.05); H03K 2017/0806 (2013.01); H03K 2217/0027 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A solid-state multi-channel protection circuit comprising:
a microcontroller;
a current sensor configured to generate a current output related to a measured current to the microcontroller;
a first multiplexer configured to selectively connect the current sensor to one of a plurality of solid-state devices, wherein the current sensor generates the current output with respect to the selectively connected solid-state device;
a plurality of temperature sensors each configured to provide a temperature output related to measure temperature, each temperature sensor located proximate to one of the plurality of solid-state devices; and
a second multiplexer configured to selectively provide the temperature output measured by each of the plurality of temperature sensors to the microcontroller;
a voltage sensor configured to generate a voltage output related to measured voltage to the microcontroller; and
a third multiplexer configured to selectively connect the voltage sensor to one of the plurality of solid-state devices, wherein voltage sensor generates the voltage output with respect to the selectively connected solid-state device;
wherein the microcontroller selectively controls the second multiplexer to receive a temperature output associated with one of the plurality of solid-state devices, and selectively controls the first multiplexer to receiver a current output related to the measured current associated with the same solid-state device, and selectively controls the third multiplexer to receive a voltage output associated with one of the plurality of solid-state devices, wherein the microcontroller provide over-current protection, over-temperature protection, and under voltage protection based on the received temperature output, and the received current output, and the received voltage output, respectively.