As the market leader in automotive sensors, Infineon has just released the latest innovation – a vertical dual-Hall sensor for detecting rotation direction and speed. The TLE4966V is the first dual-Hall device with integrated Hall plates oriented vertically and not horizontally on the chip surface, thus making it sensitive to magnetic fields with in-plane direction. This 90-degree reorientation makes this new sensor ideal for space-constrained designs.
The design flexibility and the (4 mA to 7 mA) low current consumption of the TLE4966V make it well-suited to energy-sensitive electronic automotive systems such as trunk lifts, power window lifts, sun roofs and seat adjusters. In non-automotive applications, the sensor is also an excellent solution for escalators, motorized window blinds and shades.
The two integrated vertical Hall plates on one silicon die demonstrate the same behavior for temperature and lifetime stress, with no sensitivity deviation over lifetime. Furthermore, the TLE4966V has two signal outputs: one signal for the magnet rotation direction, the other signal for the pole wheel rotation speed. That means that a single device delivers all relevant information and two sensors are no longer required. Eliminating a second, separately packaged sensor can simplify the PCB design, reduce sensor cost by an average of 30 percent and accelerate test and manufacturing time by up to 50 percent.
Features
- Two vertical Hall plates
- Rotation direction and speed detection
- 3.5 V to 32 V operating supply voltage
- Operation from unregulated power supply
- Reverse polarity protection (-18 V)
- Overvoltage capability up to 42 V without external resistor
- Low drift of magnetic thresholds over temperature and lifetime
- Automotive-qualified
- Small SMD package (TSOP6)
Applications
- Window lifters (automotive)
- Sunroofs (automotive)
- Power closers (automotive)
- Window blinds (industrial)
- Electrical doors (industrial)
- Robotics (industrial)
