Infineon's new TLE5501 products are 360° TMR-based angle sensor that detects the orientation of a magnetic field. This is achieved by measuring sine and cosine angle components with Tunneling Magneto Resistance (TMR) elements. These raw signals (sine and cosine) are provided as a differential output signal and can directly be further processed within a micro controller. The large output voltage of the bridge renders any further signal amplification unnecessary.
TLE5501's application fields range from steering angle applications with the highest functional safety requirements to motors for wipers, pumps and actuators and electric motors in general. TLE5501 is dedicated to any automotive but also industrial and consumer applications like robotics or gimbal.
One major benefit of the Infineon TMR technology is its high sensing sensitivity coming with a high output voltage. So unlike other technologies, a TMR based sensor does not require any additional internal amplifier. Thus the sensor can be connected directly to the microcontroller without any further amplification - saving costs for the end customer. There is yet another cost saving aspect of Infineon's TMR technology. TMR shows a very low temperature drift reducing external calibration and compensation efforts. In addition, the TMR technology is also well known for its low current consumption.
The TLE5501 E0001 is qualified according to AEC-Q100. This version is pin-compatible to Infineon's established and market-proven TLE5009 - but can realize more cost-efficient systems as no additional amplifier is necessary.
The other version TLE5501 E0002 has been developed according to ISO 26262 Standards. This is a milestone with regards to functional safety, making Infineon the first supplier in the market to reach the highest automotive functional safety grade ASIL D for angle sensors - with only one single sensor chip. TLE5501 E0002 incorporates decoupled bridges for redundant external angle calculation and also offers highest diagnostic coverage.