There are several types of networks in cars. The best known, and mostly used is probably CAN (Controller Area network);
these networks are designed to allow microcontrollers and devices to communicate with each other in applications without
a host computer. LIN (Local Interconnect Network) is a serial network protocol used for communication between components
in vehicles. LIN is a lower cost version of CAN, allowing data to be transmitted over a single line.
It is typically used for non-safety critical applications, such as (light) sensors, seat positioning motors or even cruise control.
As it is connected to the car battery, the supply range is broadly defined (7V-18V).
The PHY should be designed to drive a variable load, depending on the number of slaves on the LIN bus.
Additionally, the robustness requirements are quite severe; for example, the IC should survive loss of ground or loss of battery,
pass high ESD levels and have a well thought out EMC design.
Sofics' LIN transceiver PHY combines all these elements.
- Sofics' LIN PHY with built-in on-chip robustness against a myriad of automotive disturbances
Though the LIN specifciations are fixed (ISO 17987-4, SAE J2602), some options can be added, both from a functional as well as
from a robustness point of view. For example, for functionality, options for mode control include:
LIN PHY's need to comply to high ESD (e.g. 6kV HBM) and system level ESD (e.g. 6kV or 8kV ISO 10605/IEC 61000-4-2). In the Sofics design this is augmented by:
- Enable, disable, sleep, power down, ready, receiver only…
- Low emission v/s fast switching mode options
- Power saving options
- Predictable and high EMC
- Limited EM emission: Slew-rate control (slope control) (IEC 61967-4)
- Immune for EMI: Remain operational for RF disturbances (IEC 62132)
- ISO 7637-3 capability with on-chip elements only (no off-chip protection required) (Optional)
- Flexible design to cover all your requirements
Sofics LIN PHY
Sofics offers a LIN PHY, including:
Digital Logic (Controller) is not included.
- Driver design (receiver and transmitter)
- EMC optimized (slope control, EMI)
- Protection for ESD
- Compatible with automotive disturbances (ISO 7637)
- ... And of course compliant to LIN standard (ISO 17987)
Sofics LIN transciever PHY is currenlty designed in TSMC 0.25um BCD GEN II, and readily portable to any other technology.
- LIN PHY design readily available at your fingertips