Diagnosis of integrated driver circuits
First Claim
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1. A circuit arrangement comprising:
- a controller and an integrated driver circuit coupled to a communication port of the controller, wherein the integrated driver circuit comprisesan electronic output driver unit comprising a first transistor configured to drive a load, wherein the electronic output driver unit is configured to determine at least one operation parameter indicating whether the electronic output driver unit is in a fault state, anda diagnostic unit coupled to the electronic output driver unit and coupled to an interrupt port of the controller, wherein the interrupt port is different from the communication port,wherein the diagnostic unit is adapted to retrieve the at least one operation parameter from the electronic output driver unit, evaluate the at least one operation parameter in order to obtain a diagnostic result, store the diagnostic result in a storage memory, and send an interrupt signal to the controller via the interrupt port upon detection of the fault state of the output driver unit, andwherein the controller, via the communication port, is configured to read out the diagnostic result stored in the memory upon receipt of the interrupt signal from the diagnostic unit.
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Abstract
A circuit arrangement includes a controller and an integrated driver arrangement coupled to the controller. The integrated driver circuit includes a driver unit having at least one operation parameter, and a diagnostic unit coupled to the driver unit. The diagnostic unit is adapted to retrieve the at least one operation parameter from the driver unit, and is coupled to the controller.
15 Citations
32 Claims
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1. A circuit arrangement comprising:
a controller and an integrated driver circuit coupled to a communication port of the controller, wherein the integrated driver circuit comprises an electronic output driver unit comprising a first transistor configured to drive a load, wherein the electronic output driver unit is configured to determine at least one operation parameter indicating whether the electronic output driver unit is in a fault state, and a diagnostic unit coupled to the electronic output driver unit and coupled to an interrupt port of the controller, wherein the interrupt port is different from the communication port, wherein the diagnostic unit is adapted to retrieve the at least one operation parameter from the electronic output driver unit, evaluate the at least one operation parameter in order to obtain a diagnostic result, store the diagnostic result in a storage memory, and send an interrupt signal to the controller via the interrupt port upon detection of the fault state of the output driver unit, and wherein the controller, via the communication port, is configured to read out the diagnostic result stored in the memory upon receipt of the interrupt signal from the diagnostic unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A circuit arrangement comprising:
a controller and an integrated driver circuit coupled to a communication port of the controller, wherein the integrated driver circuit comprises an electronic output driver unit comprising a first load terminal and a second load terminal, an output stage disposed in the electronic output driver unit and comprising a first transistor configured to drive a load between the first and the second load terminals, a measurement circuit disposed in the electronic output driver unit and coupled to the output stage, the measurement circuit configured to measure at least one operation parameter at the first load terminal and/or the second load terminal, wherein the at least one operation parameter is configured to indicate whether the electronic output driver unit is in a fault state, and a diagnostic unit coupled to the electronic output driver unit and coupled to an interrupt port of the controller, wherein the interrupt port is different from the communication port, wherein the diagnostic unit is adapted to retrieve the at least one operation parameter from the electronic output driver unit, evaluate the at least one operation parameter in order to obtain a diagnostic result, store the diagnostic result in a storage memory, and send an interrupt signal to the controller via the interrupt port upon detection of the fault state of the output driver unit, and wherein the controller, via the communication port, is configured to read out the diagnostic result stored in the memory upon receipt of the interrupt signal from the diagnostic unit. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31)
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32. A circuit arrangement comprising:
a controller and an integrated driver circuit coupled to the controller, wherein the integrated driver circuit comprises an electronic output driver unit comprising a first transistor configured to drive a load, the electronic output driver unit configured to determine at least one operation parameter indicating whether the electronic output driver unit is in a fault state, a diagnostic unit coupled to the electronic output driver unit, the diagnostic unit being adapted to retrieve the at least one operation parameter from the electronic output driver unit, wherein the diagnostic unit is coupled to the controller, a storage memory coupled to the diagnostic unit and the controller, wherein the diagnostic unit is adapted to store the at least one operation parameter in the storage memory, wherein the diagnostic unit is coupled to the controller via an interrupt channel, and wherein the controller is configured to poll the at least one operation parameter from the storage memory via a communication channel different from the interrupt channel, wherein the controller is configured to poll the at least one operation parameter from the storage memory upon receiving an interrupt signal from the diagnostic unit via the interrupt channel.
Specification