TJA1052IT

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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 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 implements the CAN physical layer as defined in the current ISO11898 standard (ISO11898-2:2003). Pending the release of ISO11898-2:2016 including CAN FD and SAE J2284-4/5, additional timing parameters defining loop delay symmetry are specified. This implementation enables reliable communication in the CAN FD fast phase at data rates up to 5 Mbit/s.

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.

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Data Sheet

Product Details

Block Diagram

TJA1052IT Block Diagram

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Features

General

Isolator and Transceiver integrated into a single SO16 package, reducing board space
ISO 11898-2:2003 compliant
Timing guaranteed for data rates up to 5 Mbit/s in the CAN FD fast phase
Flawless cooperation between the Isolator and the Transceiver
- Fewer components improve reliability in applications
- Guaranteed performance (eg. max loop delay < 220 ns)
Electrical transient immunity of 45 kV/μs (typ)
AEC-Q100 qualified
Suitable for use in 12 V and 24 V systems; compatible with 3 V to 5 V microcontrollers
Bus common mode voltage (V_cm) = ±25 V
Low electromagnetic emission (EME) and high ElectroMagnetic Immunity (EMI)
Dark green product (halogen free and Restriction of Hazardous Substances (RoHS) compliant)

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 versions available (1 kV, 2.5 kV and 5 kV)
Voltage compliant with UL 1577, 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

Buy/Parametrics

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