The TJA1052i is a high-speed CAN transceiver that provides a galvanically isolated interfacebetween a Controller Area Network (CAN) protocol controller and the physical two-wireCAN bus. The TJA1052i is specifically targeted at Electric Vehicles (EV) and HybridElectric 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 electricshock or to prevent the electronics being damaged by high voltages.
Signal integrity: The isolator uses proprietary capacitive isolation technology totransmit and receive CAN signals. This technology enables more reliable datacommunications in noisy environments, such as high-voltage battery management systems orthe drive and regeneration systems in EVs and HEVs.
Performance: The transceiver is designed for high-speed CAN applications in the automotiveindustry, supplying the differential transmit and receive capability to a CAN protocolcontroller in a microcontroller. Integrating the galvanic isolation along with thetransceiver in the TJA1052i removes the need for stand-alone isolation. It also improvesreliability and system performance parameters such as loop delay.
The TJA1052i belongs to the third generation of high-speed CAN transceivers from NXPSemiconductors, offering significant improvements over first- and second-generationdevices. It offers improved ElectroMagnetic Compatibility (EMC) and ElectroStaticDischarge (ESD) performance, and also features ideal passive behavior to the CAN buswhen 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 SAEJ2284-4/5, additional timing parameters defining loop delay symmetry are specified. Thisimplementation enables reliable communication in the CAN FD fast phase at data rates upto 5 Mbit/s.
The TJA1052i is an excellent choice for all types of automotive and industrial CAN networks whereisolation is required for safety reasons or to enhance signal integrity in noisyenvironments.
Feature
- 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 improves 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 (Vcm) = ±25 V
- Low ElectroMagnetic Emission (EME) and high ElectroMagnetic Immunity (EMI)
- Dark green product (halogen free and Restriction of Hazardous Substances (RoHS)compliant)
- Functional behavior predictable under all supply conditions
- Transceiver disengages from the bus when not powered up (zero load)
- 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
