Infineon Technologies has introduced the new XENSIV TLE49SR angle sensor family, which combines excellent stray field immunity with high accuracy. These sensors are ideal for applications of safety-critical automotive chassis systems such as electric power steering and vehicle height leveling. All products in the XENSIV TLE49SR family withstand stray magnetic fields of up to 8 mT. The sensors exceed the requirements of ISO11452-8 level IV for car hybridization and electrification with 4000 A/m (equal to 5 mT) for inhomogeneous stray field and eliminate the need for external shielding.
The intrinsic accuracy of the sensors defines an angle error with less than 1°. By using a look-up table, the angle error can be reduced even further: Multi point calibration (16 variable and 32 equidistant) results in an angle error below 0.5°. This feature helps to compensate angle deviations resulting e.g. from mechanical misalignments of the manufacturing process. The angle sensors were developed according to ISO 26262 as a “safety element out of context”. The ASIL C metric on component level enables system designs up to functional safety level ASIL D.
Key Features
- Withstands mag. strayfield up to 8mT
- Angle error<1°, with look up table<0.5°
- Enables ASIL D compliant systems
- Very low jitter delay ±1µs
- Configurable 9.8µs ~ 26ms
- Compensates package stress
- Follows zero defect quality policy
