Buck/Boost High-Speed CAN/Dual LIN System Basis Chip Family
UJA113xHW アラートの受信
The UJA113x System Basis Chip (SBC) contains a fully integrated automatic SMPS Buck-Boost converter, a High-Speed CAN transceiver and up to two LIN transceivers along with a number of features commonly found in the latest generation of automotive Electronic Control Units (ECUs). It interfaces directly with CAN and LIN bus lines, supplies the microcontroller, handles input and output signals and supports fail-safe features including a watchdog and advanced ‘limp home’ functionality configurable via non-volatile memory.
The UJA113x implements the High-Speed CAN physical layer as defined in the ISO 11898 standard (-2:2003, -5:2007, -6:2013) with additional timing parameters included, defining loop delay symmetry for CAN FD communication up to 2 Mbit/s.
製品詳細
Features
General
- Designed for automotive applications according to ISO 11898-2/5/6
- ±6 kV ESD protection according to the Human Body Model (HBM) on the CAN/LIN bus pins
- ±6 kV ESD protection according to IEC 61000-4-2 on the CAN/LIN bus pins, the sensor supply output (VEXT) and the HVIO pins
- ±40 V short-circuit proof CAN/LIN bus pins
- Battery and CAN/LIN bus pins are protected against transients in accordance with ISO 7637-3
Integrated Buck and Boost converter (SMPS)
- Automatic Buck or Boost mode selection depending on input voltage and output load conditions functions with a single external coil
- The SMPS functions as a pre-regulator for V1 and, optionally, V2
- The SMPS can be used to supply external loads directly
Low-drop voltage regulators (LDOs)
- V1 voltage regulator 5 V or 3.3 V with 500 mA output current capability
- V2 auxiliary voltage regulator 5 V with 100 mA output current capability.
- V2 is protected against shorts to GND and battery for off-board loads
CAN transceiver
- ISO 11898-2/5/6 compliant 1 Mbit/s high-speed CAN transceiver supporting CAN FD active communication up to 2 Mbit/s in the CAN FD data field
- Autonomous bus biasing according to ISO 11898-6:2013
- UJA113xFD: selective wake-up function (ISO11989-6:2013 compliant CAN partial networking)
LIN transceivers
- One or two LIN channels depending on the selected device
- LIN 2.x and SAE J2602 compliant
- Integrated LIN follower termination
- Improved EMC emission performance with optimized curve shaping
High-voltage I/Os (not available in UJA113xFD/0 variants)
- 4 or 8 I/O pins individually configurable as high- or low-side output drivers
- Reverse-current protection of the output in Off mode (loss-of-ground and loss-of-battery proof)
- Open-load diagnostics and short-circuit protection and diagnostics
- Individually configurable as inputs with wake-up capability
- Three HVIOs can be configured individually as limp-home outputs
A/D converter for monitoring the battery voltage
- Two channels: 10-bit resolution, accurate to ±300 mV at 20 V full scale
- Undervoltage and Overvoltage detection
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