Magnetic Position Sensor Enables Fast BLDC Motor Control

Magnetic Position Sensor Enables Fast BLDC Motor Control

As per its maker, the iC-MH16 is a one-chip magnetic position sensor addressing applications in fast motor control units. Combined with a diametrically magnetized permanent magnet, the device resides in a 5 mm x 5 mm QFN28 package containing a Hall sensor array with signal amplification control, a FlexCount interpolator delivering incremental (ABZ) and latency-free commutation (UVW) signals, RS-422 line drivers, and a serial SSI/BiSS interface. The FlexCount interpolator delivers all interpolation factors from 1 to 1024, representing resolution of 4 to 4096 angular steps per turn. The incremental edge rate of 16 MHz enables applications with rotation speed of up to 200,000 rpm. The UVW commutation signals are available for any pole pair count ranging from 1 to 16 and the incremental signals have been implemented as configurable RS-422 line drivers. An automatic gain control compensates for variations in the Hall sensor signals due to fluctuations in the ambient temperature or changes in distance to the magnet. Additionally, the iC-MH16 operates on a supply voltage of +5 V (±10%) within an operating temperature range of -40°C to +125°C. Production volume is available and can be ordered at $7.86 each/1,000. Further information, visit http://www.ichaus.com/MH16  

iC-Haus GmbH
Bodenheim, Germany
+49 (6135) 9292-313
http://www.ichaus.com

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