# US 12,603,642 B2 · Electrical assembly for connection with battery and electrical load > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,603,642 B2 - Document ID: US12603642B2 - Status: Granted - Kind: B2 - Application number: 18/418,829 - Filed: 2024-01-22 - Published: 2025-07-24 - Granted: 2026-04-14 - Earliest claimed: 2024-01-22 - Assignees: Aptiv Technologies AG - Applicants: Aptiv Technologies AG - Inventors: Nikola Stojakovic; John Caputo; Jay Junkin - Web page: https://patentgrep.com/patent/US12603642B2 ## CPC - G01R 31/3277: {of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches} - H03K 3/0231: Astable circuits {(H03K3/0315 takes precedence)} - G01R 31/2607: {Circuits therefor (G01R31/2642 takes precedence)} - H03F 3/45475: {using IC blocks as the active amplifying circuit} - H03K 5/2481: {with at least one differential stage} - H03F 2200/261: Amplifier which being suitable for instrumentation applications - G01R: MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES (indicating correct tuning of resonant circuits H03J3/12) - H03K: PULSE TECHNIQUE (measuring pulse characteristics G01R; modulating sinusoidal oscillations with pulses H03C; transmission of digital information H04L; discriminator circuits detecting phase difference between two signals by counting or integrating cycles of oscillation H03D3/04; automatic control, starting, synchronisation or stabilisation of generators of electronic oscillations or pulses where the type of generator is irrelevant or unspecified H03L; coding, decoding or code conversion, in general H03M) - H03F: AMPLIFIERS ## Abstract An electrical assembly configured for connection with a battery and an electrical load includes a first transistor, a second transistor, a first operational amplifier (op-amp), a second op-amp, a comparator, and a controller. The second transistor is electrically connected in parallel with the first transistor. The first operational amplifier (op-amp) is electrically connected with the first transistor and the second transistor. The second op-amp is electrically connected with the first transistor and the second transistor. The comparator is electrically connected with the first op-amp and the second op-amp. The controller is electrically connected with the first transistor, the second transistor, and the comparator. The controller is configured to control the first transistor and the second transistor and determine an operational status of the first transistor and the second transistor based on an output of the comparator. ## Claims ### Claim 1 An electrical assembly configured for connection with a battery and an electrical load, the electrical assembly comprising: a first transistor; a second transistor electrically connected in parallel with the first transistor; a first operational amplifier (op-amp) electrically connected with the first transistor and the second transistor; a second op-amp electrically connected with the first transistor and the second transistor; a comparator electrically connected with the first op-amp and the second op-amp; and a controller electrically connected with the first transistor, the second transistor, and the comparator and configured to: control the first transistor and the second transistor; and determine an operational status of the first transistor and the second transistor based on an output of the comparator, wherein the electrical assembly is configured for connection with a vehicle, and wherein the controller is configured to continuously monitor gate voltages and temperatures of the first transistor and the second transistor during operation of the vehicle. ### Claim 2 (depends on 1) The electrical assembly of claim 1 wherein the controller is configured to perform health checks of the first transistor and the second transistor while electrical current is flowing from the battery to the electrical load. ### Claim 3 (depends on 1) The electrical assembly of claim 1 wherein the operational status indicates that a respective transistor is operating correctly or includes a fault condition. ### Claim 4 (depends on 3) The electrical assembly of claim 3 wherein the fault condition is associated with the respective transistor being in an open state or a closed state. ### Claim 5 An electrical assembly configured for connection with a battery and an electrical load, the electrical assembly comprising: a first transistor; a second transistor electrically connected in parallel with the first transistor; a third transistor connected in parallel with the first transistor and the second transistor; a first operational amplifier (op-amp) electrically connected with the first transistor and the second transistor; a second op-amp electrically connected with the first transistor and the second transistor; a comparator electrically connected with the first op-amp and the second op-amp; and a controller electrically connected with the first transistor, the second transistor, the third transistor and the comparator and configured to: control the first transistor and the second transistor; determine an operational status of the first transistor and the second transistor based on an output of the comparator; and determine an operational status of the third transistor based on additional outputs from the comparator. ### Claim 6 An electrical assembly configured for connection with a battery and an electrical load, the electrical assembly comprising: a first transistor; a second transistor electrically connected in parallel with the first transistor; a first operational amplifier (op-amp) electrically connected with the first transistor and the second transistor; a second op-amp electrically connected with the first transistor and the second transistor; a comparator electrically connected with the first op-amp and the second op-amp; a controller electrically connected with the first transistor, the second transistor, and the comparator and configured to: control the first transistor and the second transistor; and determine an operational status of the first transistor and the second transistor based on an output of the comparator; and a third transistor electrically connected with the controller and the first op-amp and connected in series with the first transistor and the second transistor. ### Claim 7 (depends on 6) The electrical assembly of claim 6 further comprising a first capacitor electrically connected with the third transistor and the first op-amp, the first capacitor disposed between the third transistor and the first op-amp. ### Claim 8 An electrical assembly configured for connection with a battery and an electrical load, the electrical assembly comprising: a first transistor; a second transistor electrically connected in parallel with the first transistor; a first operational amplifier (op-amp) electrically connected with the first transistor and the second transistor; a second op-amp electrically connected with the first transistor and the second transistor; a comparator electrically connected with the first op-amp and the second op-amp; a controller electrically connected with the first transistor, the second transistor, and the comparator and configured to: control the first transistor and the second transistor; and determine an operational status of the first transistor and the second transistor based on an output of the comparator; a first resistor electrically connected with the second op-amp and the comparator, the first resistor disposed between the second op-amp and the comparator; and a second resistor electrically connected with the first resistor and ground, wherein the first resistor and the second resistor act as a voltage divider during health checks of the first transistor and the second transistor. ### Claim 9 (depends on 1) A vehicle comprising: the electrical assembly of claim 1; the battery; and the electrical load, wherein the controller is configured to continuously determine the operational status of the first transistor and the second transistor during operation of the vehicle. ### Claim 10 A method of operating an electrical assembly configured for connection with a battery and an electrical load, the method comprising: providing a first transistor and a second transistor electrically connected in parallel with the first transistor; providing a first operational amplifier (op-amp) electrically connected with the first transistor and the second transistor; providing a second op-amp electrically connected to the first transistor and the second transistor; providing a comparator electrically connected with the first op-amp and the second op-amp; providing a controller electrically connected with the first transistor, the second transistor, and the comparator; controlling, via the controller, the first transistor and the second transistor; and determining, via the controller, an operational status of the first transistor and the second transistor based on an output of the comparator, wherein the electrical assembly is configured for connection with a vehicle, and wherein the method further includes continuously monitoring, via the controller, gate voltages and temperatures of the first transistor and the second transistor during operation of the vehicle. ### Claim 11 (depends on 10) The method of claim 10 further comprising performing, via the controller, health checks of the first transistor and the second transistor while electrical current is flowing from the battery to the electrical load. ### Claim 12 (depends on 10) The method of claim 10 wherein the operational status indicates that a respective transistor is operating correctly or includes a fault condition. ### Claim 13 (depends on 12) The method of claim 12 wherein the fault condition is associated with the respective transistor being in an open state or a closed state. ### Claim 14 (depends on 10) The method of claim 10 further comprising: providing a third transistor connected in parallel with the first transistor and the second transistor, wherein the controller is electrically connected with the third transistor; and determining, via the controller, an operational status of the third transistor based on additional outputs from the comparator. ### Claim 15 (depends on 10) The method of claim 10 further comprising providing a third transistor electrically connected with the controller and the first op-amp and connected in series with the first transistor and the second transistor. ### Claim 16 (depends on 15) The method of claim 15 further comprising providing a first capacitor electrically connected with the third transistor and the first op-amp, wherein the first capacitor is disposed between the third transistor and the first op-amp. ### Claim 17 (depends on 10) The method of claim 10 further comprising: providing a first resistor electrically connected with the second op-amp and the comparator, wherein the first resistor is disposed between the second op-amp and the comparator; and providing a second resistor electrically connected with the first resistor and ground, wherein the first resistor and the second resistor act as a voltage divider during health checks of the first transistor and the second transistor. ### Claim 18 (depends on 10) The method of claim 10 wherein the controller is configured to perform health checks of the first transistor and the second transistor while not interrupting current flow from the battery to the electrical load.