Angular Sensor for 3-Phase Brushless Motor Commutation
The MagAlpha MA120 magnetic sensor is an all-in-one solution designed to replace Hall switches for 3-phase block commutation in brushless DC motors. The MA120 detects the absolute angular position of a permanent magnet, typically a diametrically magnetized cylinder attached to the rotor. The data acquisition and processing is extremely fast, allowing for accurate angle measurement at speeds from 0 to 120,000 RPM.
The MA120 supports a wide magnetic field strength range, which helps relax mechanical tolerances and simplify system design.
- UVW Signals for Block Commutation
- 11-Bit Resolution Absolute Angle Encoder
- 500kHz Refresh Rate
- Ultra-Low Latency: 3µs
- SPI Serial Interface
- 3.3V, 7.7mA Supply
- Available in a QFN-16 (3mmx3mm) Package
- PackageQFN-16 (3x3)
- Vin (min) (V)3
- Vin (max) (V)3.6
- fcutoff (Hz)740
- Latency (µs)3
- Isupply (mA)7.7
- tstart-up (ms)3
- Refresh Rate (kHz)500
- Output FormatSPI, UVW
- Resolution (bits)8
- Sensor PositionEnd-of-Shaft
- Temp Range (°C)-40 to +125
- Magnetic Field (min) (mT)30
MagAlpha Communication Kit to Connect to Sensor Test Boards (TMBA) and Rotary Knob Kit, Requires Macom App Software
The EVKT-MACOM is a communication kit for the MagAlpha magnetic position sensor family test boards (TBMA) and Rotary Knob kit (EVKT-KNOB). The kit contains a microcontroller motherboard, a collection of daughter boards adapted to different sensor boards, and the related cables.
This communicaiton kit requires Macom App Software and a sensor test board to evaluate MagAlpha functionality and performance with your set-up, such as noise level, refresh rate, power-up time, and magnetic field dependence.
$75.00 + tax