CONTROLLER AREA NETWORK NODE TRANSCEIVER
An electronic device comprises a control module, a transceiving module, a first isolator, and a second isolator. The control module is configured to generate a control signal in response to a signal from an MCU. The transceiving module comprises a transceiving unit, which further comprises a first switch and a second switch. The electronic device further comprises a first isolator and a second isolator. The first isolator is external to the transceiving unit and is coupled between the first switch and a bus. Moreover, the first isolator is configured to isolate a first spike current coming from the bus. The second isolator is external to the transceiving unit and is coupled between a terminal of the second switch and the bus. Moreover, the second isolator is configured to direct a second spike current coming from the bus to the ground.
1 . An electronic device, comprising:
a control module configured to generate a control signal in response to a signal from a micro-control unit;
a transceiving module 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, the transceiving module comprising:
a transceiving unit, further comprising:
a first switch; and
a second switch;
a first isolator, external to the transceiving unit and coupled between the first switch and the bus, the first isolator configured to isolate a first spike current coming from the bus; and
a second isolator, external to the transceiving unit and coupled between a terminal of the second switch and the bus, the second isolator configured to direct a second spike current coming from the bus to the ground.
2 . The electronic device of claim 1 , wherein the first switch includes a first transistor, and the second switch includes a second transistor.
3 . The electronic device of claim 2 , wherein the first transistor includes a P-type metal-oxide-semiconductor field effect transistor (MOSFET).
4 . The electronic device of claim 2 , wherein the second transistor includes an N-type MOSFET.
5 . The electronic device of claim 1 , wherein the first isolator includes a diode, which includes an anode coupled to the first switch and a cathode coupled to the bus.
6 . The electronic device of claim 1 , wherein the second isolator includes a diode, which includes an anode coupled to the bus and a cathode coupled to the second switch.
7 . The electronic device of claim 1 further comprising a switch between a first signal transmitting path from the control module to the transceiving module, and a second signal transmitting path from the transceiving modules to the control module.
8 . The electronic device of claim 1 , wherein the transceiving module includes an overheat protection module coupled to a driver.
9 . The electronic device of claim 8 , wherein the overheat protection module is configured to disable the driver when the driver reaches a temperature threshold.
10 . A signal transceiving module, comprising:
a transceiving unit, further comprising:
a first switch; and
a second switch;
a first isolator, external to the transceiving unit and coupled between the first switch and a bus, the first isolator configured to isolate a first spike current coming from the bus; and
a second isolator; external to the transceiving unit and coupled between a terminal of the second switch and the bus, the second isolator configured to isolate a second spike current coming from the bus.
11 . The transceiving module of claim 10 , wherein the first switch includes a first transistor and the second switch includes a second transistor.
12 . The electronic device of claim 11 , wherein the first transistor includes a P-type MOSFET.
13 . The electronic device of claim 11 , wherein the second transistor includes an N-type MOSFET.
14 . The transceiving module of claim 10 , wherein the first isolator comprises a diode, which includes an anode coupled to the first switch and a cathode coupled to the bus.
15 . The transceiving module of claim 10 , wherein the second isolator comprises a diode, which includes an anode coupled to the bus and a cathode coupled to the second switch.
16 . The transceiving module of claim 10 , wherein the transceiving module includes an overheat protection module coupled to a driver.
17 . The electronic device of claim 16 , wherein the overheat protection module is configured to disable the driver when the driver reaches a temperature threshold.