Infineon Technologies Hall sensor - TLE4929C-XHA

The Infineon XENSIV™ TLE4929C-XHA products address new requirements for crankshaft speed sensing from hybrid powertrains. An advanced vibration detection algorithm ensures valid sensor data for any hybrid powertrain traction mode e.g. detecting unintended movements of the crankshaft while the car is driven by the e-motor. This improves the efficiency of the engine start and helps to avoid misfiring or error messages by ECU caused by wrongly calibrated sensor data.

XENSIV™ TLE4929C-XHA sensors as well feature high adaptivity to the diversity of crankshaft applications. 

Key features

• Enlarged coverage of encoders, now also for 34 or 56 teeth
• Advanced vibration detection
• Adaptive K-Factor allows trimming of the switching threshold to 16 values
• Package compatibility with Infineon’s predecessor products

Additional features

• A dedicated algorithm prevents sensor miss-calibration when the engine is off but the Crankshaft is vibrating.
• Prevents (at engine start) from miss-firing and potential error messages by ECU
• Improves user experience in engine start enabling faster engine start
• Helps to save battery resources with faster engine start
• Low design switch effort: backward package compatibility (TLE4929C-XVA, TLE4929C-XAF, TLE4929C-XAN)
• High adaptivity to application diversity:
  • This enables adjustment towards different encoders and improves phase accuracy where by geometry a 50% switching leads to poor results

Applications

• Crankshaft speed and direction sensing
• Miss-fire detection
• Ignition control