TJA1052IT Galvanically isolated high-speed CAN transceiver

The TJA1052i is a high-speed CAN transceiver that provides a galvanically isolated interface between a Controller Area Network (CAN) protocol controller and the physical two-wire CAN bus. The TJA1052i is specifically targeted at Electric Vehicles (EV) and Hybrid Electric Vehicles (HEV), where galvanic isolation barriers are needed between the high- and low-voltage parts.

Safety: Isolation is required for safety reasons, eg. to protect humans from electric shock or to prevent the electronics being damaged by high voltages.

Signal integrity: The isolator uses proprietary capacitive isolation technology to transmit and receive CAN signals. This technology enables more reliable data communications in noisy environments, such as high-voltage battery management systems or the drive and regeneration systems in EVs and HEVs.

Performance: The transceiver is designed for high-speed (up to 1 Mbit/s) CAN applications in the automotive industry, supplying the differential transmit and receive capability to a CAN protocol controller in a microcontroller. Integrating the galvanic isolation along with the transceiver in the TJA1052i removes the need for stand-alone isolation. It also improves reliability and system performance parameters such as loop delay.

The TJA1052i belongs to the third generation of high-speed CAN transceivers from NXP Semiconductors, offering significant improvements over first- and second-generation devices. It offers improved ElectroMagnetic Compatibility (EMC) and ElectroStatic Discharge (ESD) performance, and also features ideal passive behavior to the CAN bus when the transceiver supply voltage is off.

The TJA1052i is an excellent choice for all types of automotive and industrial CAN networks where isolation is required for safety reasons or to enhance signal integrity in noisy environments

产品特点 Features

General

Isolator and Transceiver integrated into a single SO16 package, reducing board space
Flawless cooperation between the Isolator and the Transceiver:
- Fewer components improves reliability in applications
- Guaranteed performance (eg. max loop delay < 220 ns)
Electrical transient immunity of 45 kV/μs (typ)
ISO 11898-2 compliant
Suitable for use in 12 V and 24 V systems; compatible with 3 V to 5 V microcontrollers
Bus common mode voltage (Vcm) = ±25 V
Low ElectroMagnetic Emission (EME) and high ElectroMagnetic Immunity (EMI)

Power management

Functional behavior predictable under all supply conditions
Transceiver disengages from the bus when not powered up (zero load)

Protection

Up to 5 kV (RMS) rated isolation
Three version available (1 kV, 2.5 kV and 5 kV)
Voltage compliant with UL 1577 (pending), IEC 61010 and IEC 60950
5 kV (RMS) rated isolation voltage compliant with UL 1577, IEC 61010 and IEC 60950
Supports ISO6469 ‘Electrically propelled road vehicles. Safety specifications.’
High ESD handling capability on the bus pins
Bus pins protected against transients in automotive environments
Transmit Data (TXD) dominant time-out function
Undervoltage detection on supply pins

TJA1052IT 技术支持

档案名称	标题	类型	格式
TJA1052IT	Galvanically isolated high-speed CAN transceiver	Data sheet	pdf
AN10115	Philips Microcontrollers in LIN Applications	Application note	pdf
AN00094	TJA1041/1041A high speed CAN transceiver	Application note	pdf
AN00020	TJA1050 high speed CAN transceiver	Application note	pdf
AN10211	TJA1040 high speed CAN transceiver	Application note	pdf
AN96116	PCA82C250/251 CAN Transceiver	Application note	pdf
PCA82C250_251_TJA1040_TJA1050	Upgrading Note PCA82C250/251 -> TJA1040, TJA1050	Other type	pdf