Controller area network node transceiver
View Patent ↗A transceiver includes a control module and a transceiving module. The control module is configured to generate a control signal in response to a signal from a micro-control unit. The transceiving module is integrated with the control module. The transceiving module is configured to, in response to the control signal, broadcast a first electrical signal to a bus and receive a second electrical signal from the bus.
1. A transceiver, comprising:
a control module, configured to generate a control signal in response to a signal from a micro-control unit; and
a transceiving module, integrated with the control module, and configured to, in response to the control signal, broadcast a first electrical signal to a bus and receive a second electrical signal from the bus,
wherein the transceiving module and the control module are integrated in the transceiver, and the transceiver is separated from the micro-control unit;
wherein the transceiver is coupled to the bus via a first isolator, and the first isolator is disposed externally to the integrated control module and transceiving module;
wherein the transceiving module includes a first switch;
wherein the first isolator is coupled between the first switch and the bus, and is configured to isolate a first spike current sent over the bus.
2. The transceiver of claim 1 , wherein the transceiver is coupled to the bus via a second isolator, and the second isolator is disposed externally to the integrated control module and transceiving module.
3. The transceiver of claim 2 , wherein the transceiving module further includes a second switch.
4. The transceiver of claim 3 , wherein the first switch includes a first transistor, and the second switch includes a second transistor.
5. The transceiver of claim 3 , wherein the second isolator is coupled between the second switch and the bus, and is configured to direct a second spike current to ground.
6. The transceiver of claim 3 , wherein the first isolator includes a diode, which includes an anode coupled to the first switch and a cathode coupled to the bus.
7. The transceiver of claim 3 , wherein the second isolator includes a diode, which includes an anode coupled to the bus and a cathode coupled to the second switch.
8. The transceiver of claim 1 further including a multiplexer, coupled between the control module and the transceiving module, and configured to select a signal transmission direction between the control module and the transceiving module.
9. The transceiver of claim 1 , wherein the transceiving module includes an overheat protection module coupled to a driver.
10. The transceiver of claim 9 , wherein the overheat protection module is configured to disable the driver when the driver reaches a temperature threshold.
11. An electronic device, comprising:
a transceiver, comprising:
a control module, configured to generate a control signal in response to a signal from a micro-control unit; and
a transceiving module, integrated with the control module, and configured to, in response to the control signal, broadcast a first electrical signal to a bus and receive a second electrical signal from the bus;
a first isolator, disposed externally to the integrated control module and transceiving module, and coupled between the transceiver and the bus to isolate a first spike current sent over the bus; and
wherein the transceiving module includes a first switch;
wherein the first isolator is coupled between the first switch and the bus;
a second isolator, disposed externally to the integrated control module and transceiving module, and coupled between the transceiver and the bus to direct a second spike current to ground,
wherein the transceiving module and the control module are integrated in the transceiver, and the transceiver is separated from the micro-control unit.
12. The electronic device of claim 11 , wherein the transceiver further includes a second switch.
13. The electronic device of claim 12 , wherein the second switch includes a second transistor.
14. The electronic device of claim 12 , wherein the first isolator includes a diode, which includes an anode coupled to the first switch and a cathode coupled to the bus.
15. The electronic device of claim 12 , wherein the second isolator includes a diode, which includes an anode coupled to the bus and a cathode coupled to the second switch.
16. The electronic device of claim 11 further including a multiplexer, coupled between the control module and the transceiving module, and configured to select a signal transmission direction between the control module and the transceiving module.
17. The electronic device of claim 16 , wherein the multiplexer is configured to establish a signal loop for testing the control module in response to a signal from the micro-control unit.
18. The electronic device of claim 11 , wherein the transceiving module includes an overheat protection module coupled to a driver.
19. The electronic device of claim 18 , wherein the overheat protection module is configured to disable the driver when the driver reaches a temperature threshold.
20. A transceiver, comprising:
a control module, configured to generate a control signal in response to a signal from a micro-control unit external to the transceiver; and
a transceiving module, integrated with the control module, and configured to, in response to the control signal, broadcast a first electrical signal to a bus and receive a second electrical signal from the bus,
wherein the transceiving module and the control module are integrated in the transceiver, and the transceiver is separated from the micro-control unit.