Controller area network node transceiver

• US 9,502,889 B2
• Filed: 11/28/2014
• Issued: 11/22/2016
• Est. Priority Date: 07/29/2013
• Status: Active Grant

• Current Assignee: Integrated Silicon Solution Incorporated (Uphill Investment Co.)
• Original Assignee: Myson Century, Inc.
• Inventors: Chung, Yuan-Chih, Yang, Tsen-Shau
• Primary Examiner(s): Hammond, Crystal L
• Application Number:
  US14/555,914
• Publication Number:
  US 20150085411A1
• Time in Patent Office: 725 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: H02H 9/02 responsive to excess current current limitation for voltage regulators G05F1/573; disconnection after limiting H02H3/025
• CPC Class Codes: H02H 9/025 Current limitation using field effect transistors
• CPC Class Codes: H04L 12/6418 Hybrid transport
• CPC Class Codes: H04L 43/08 Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters

Abstract

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.

Claims

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.