	US 12,425,066 B2
	CAN transceiver and method for the CAN transceiver
Lucas Pieter Lodewijk van Dijk, Kranenburg (DE); and Gerald Kwakernaat, Malden (NL)
Assigned to NXP B.V., Eindhoven (NL)
Filed by NXP B.V., Eindhoven (NL)
Filed on Oct. 11, 2023, as Appl. No. 18/484,852.
Claims priority of application No. 22210039 (EP), filed on Nov. 28, 2022.
Prior Publication US 2024/0178875 A1, May 30, 2024
Int. Cl. H04B 1/40 (2015.01); H04L 12/40 (2006.01)

CPC H04B 1/40 (2013.01) [H04L 12/40 (2013.01); H04L 2012/40215 (2013.01)]

17 Claims

1. A Controller Area Network, CAN, transceiver, comprising:

a transmit data, TXD, interface, a receive data, RXD, interface, a CAN BUS interface, a first control interface,

a transmitter, a receiver, and a control unit,

wherein a transmitter input of the transmitter is coupled to the TXD interface for receiving a TXD signal,

wherein a transmitter output of the transmitter is coupled to the CAN BUS interface,

wherein the receiver is coupled between the CAN BUS interface and the RXD interface,

wherein the transmitter comprises a first driver path comprising a first series circuit, which comprises a first switch unit and a second switch unit,

wherein the transmitter comprises a second driver path comprising a second series circuit, which comprises a third switch unit and a fourth switch unit,

wherein the first driver path is coupled to a first terminal of the CAN BUS interface and the second driver path is coupled to a second terminal of the CAN BUS interface,

wherein the transmitter comprises a driver unit configured to control the first switch unit and the third switch unit based on the TXD signal,

wherein the control unit is coupled to the first control interface for receiving a first control signal,

wherein the control unit is coupled to at least one switch unit of the first driver path and to at least one switch unit of the second driver path to control the switch units coupled to the control unit,

wherein the control unit is configured, if the first control signal represents a deactivation message, to deactivate at least one switch unit of each driver path,

wherein the first driver path comprises a further, fifth switch unit and the second driver path comprises a further, sixth switch unit,

wherein the driver unit is coupled to a control terminal of the first switch unit via a first control signal path, the transmitter comprising a seventh switch unit integrated into the first control signal path,

wherein the driver unit is coupled to a control terminal of the third switch unit via a second control signal path,

wherein the transmitter comprises an eighth switch unit integrated into the second control signal path,

wherein the control unit is coupled to the seventh and eighth switch units to control the seventh and eighth switch units, and

wherein the control unit is configured, if the first control signal represents the deactivation message, to deactivate the seventh and eighth switch units.