Overview
The TJA1052IT/5,518 is a galvanically isolated high-speed CAN (Controller Area Network) transceiver produced by NXP USA Inc. This device is specifically designed for use in Electric Vehicles (EV) and Hybrid Electric Vehicles (HEV), where galvanic isolation is crucial for safety and signal integrity. It provides a reliable interface between the CAN protocol controller and the physical two-wire CAN bus, ensuring compliance with ISO 11898-2:2016 and SAE J2284-1 to SAE J2284-5 standards.
Key Specifications
| Parameter | Description |
|---|---|
| Compliance | ISO 11898-2:2016 and SAE J2284-1 to SAE J2284-5 |
| Data Rate | Up to 5 Mbit/s in the CAN FD fast phase |
| Isolation Voltage | 5 kV (RMS) according to UL 1577, IEC 61010, and IEC 60950 |
| Package | SO16 plastic small outline package; 16 leads; body width 7.5 mm |
| Supply Voltage | Suitable for use in 12 V and 24 V systems; compatible with 3 V to 5 V microcontrollers |
| Electrical Transient Immunity | 45 kV/μs (typ) |
| Qualification | AEC-Q100 qualified |
| Loop Delay | Maximum loop delay < 220 ns |
Key Features
- Galvanic isolation using proprietary capacitive isolation technology for enhanced safety and signal integrity.
- High-speed CAN transceiver with differential transmit and receive capability.
- Improved ElectroMagnetic Compatibility (EMC) and ElectroStatic Discharge (ESD) performance.
- Ideal passive behavior to the CAN bus when the transceiver supply voltage is off.
- Reduced component count for improved reliability.
- Bus wake-up filter to ensure only bus dominant and bus recessive states are detected in Standby mode.
Applications
- Electric and Hybrid Electric Vehicles (EV/HEV) for isolated CAN nodes.
- Lithium-ion battery management systems.
- Regenerative braking systems.
- 48 V-to-12 V level shifting applications.
- Isolation of high-voltage on-demand pumps and motors in belt elimination projects.
- Automotive and industrial CAN networks requiring isolation for safety or signal integrity.
Q & A
- What is the primary function of the TJA1052IT/5,518?
The TJA1052IT/5,518 is a galvanically isolated high-speed CAN transceiver that provides an interface between the CAN protocol controller and the physical two-wire CAN bus.
- What standards does the TJA1052IT/5,518 comply with?
The device complies with ISO 11898-2:2016 and SAE J2284-1 to SAE J2284-5 standards.
- What is the maximum data rate supported by the TJA1052IT/5,518?
The device supports data rates up to 5 Mbit/s in the CAN FD fast phase.
- What is the isolation voltage rating of the TJA1052IT/5,518?
The isolation voltage rating is 5 kV (RMS) according to UL 1577, IEC 61010, and IEC 60950.
- Is the TJA1052IT/5,518 suitable for use in automotive systems?
Yes, it is specifically targeted at Electric Vehicles (EV) and Hybrid Electric Vehicles (HEV) and is suitable for use in 12 V and 24 V systems.
- What is the significance of galvanic isolation in the TJA1052IT/5,518?
Galvanic isolation is crucial for safety reasons, such as protecting humans from electric shock and preventing electronics damage from high voltages, and for enhancing signal integrity in noisy environments.
- How does the TJA1052IT/5,518 handle power sequencing?
The device requires proper power-down sequencing to avoid a dominant pulse on the CAN bus, especially in networks that support remote bus wake-up.
- What are some typical applications of the TJA1052IT/5,518?
Typical applications include lithium-ion battery management, regenerative braking, 48 V-to-12 V level shifting, and isolation of high-voltage on-demand pumps and motors.
- Is the TJA1052IT/5,518 AEC-Q100 qualified?
Yes, the device is AEC-Q100 qualified.
- What is the maximum loop delay of the TJA1052IT/5,518?
The maximum loop delay is less than 220 ns.
- How does the TJA1052IT/5,518 behave when the transceiver supply voltage is off?
The device exhibits ideal passive behavior to the CAN bus when the transceiver supply voltage is off.
