Solid-state latch and switch devices rely on the principles of the Hall effect to determine the physical position of an object by sensing the position of a paired magnet. These on/ off switching devices are very common in automotive applications such as brakes, gear shifters, door locks and seat belts.
While Melexis’ automotive-qualified devices are manufactured in the millions, their design offers the user flexibility to adapt them for use in various lower-volume industrial applications. An integrated EEPROM allows thresholds and compensation to be programmed into the device while on the production line, turning a standard part into a custom solution. By programming compensation curves, the devices can be used with low-cost magnets, thereby lowering the total cost of the sensing solution.
In addition, the highly flexible, high-accuracy second generation of Hall switches features an integrated capacitor for PCB-less installation in tight spaces.
Melexis’ newest device, the MLX92292, incorporates Triaxis® functionality, which offers a new way of sensing based on proprietary Integrated Magnetic Concentrator (IMCTM) technology. The ability to sense lateral or orthogonal magnetic fields brings the potential to replace multiple devices with a single sensor, saving valuable space and reducing bill-of-materials costs.
- Operating-voltage range: 2.7V to 24V
- Accurate switching thresholds
- Reverse supply-voltage protection
- Output-current limit with automatic shutdown
- Under-voltage lockout protection
- Thermal protection
- Traceability with integrated unique identifier
- Integrated self-diagnostic functions activating dedicated safe mode
- Qualified to ISO26262-8:13 for use in safety-critical systems
- Brake and clutch sensors
- Sunroof/tailgate opener
- Steering-column lock
- Open/close detection
- Brake light switch
- Window lifter
- Door lock
- Seatbelt buckle
- Seat positioning
- Transmission applications
- Electrical power steering