MA300GQ-P Datasheet, PDF (1/18 Pages) MPS Industries, Inc. – Angular Sensor for 3-Phase Brushless Motor Commutation and Position Control with Side-Shaft Positioning Capability

MagAlpha
MA300
Angular Sensor for 3-Phase Brushless Motor
Commutation and Position Control with
Side-Shaft Positioning Capability
Key Features
UVW Signals for Block Commutation
11-Bit Resolution Absolute Angle Encoder
500kHz Refresh Rate
Ultra-Low Latency: 3 µs
Serial Interface for Data Readout and Settings
10-Bit Incremental Output (A, B, Z)
Built-In Linearization for Side-Shaft Mounting
7.5mA Supply Current
QFN-16 3x3mm Package
General Description
The MagAlpha MA300 is a magnetic sensor
designed to replace the 3 Hall switch solutions
for 3-phase block commutation in brushless dc
motors. The IC detects the absolute angular
position of a permanent magnet, typically a
diametrically magnetized cylinder attached to
the rotor. The MagAlpha is an extremely fast
acquisition and processing sensor, allowing
accurate angle measurement at speeds from 0
to 120’000 RPM.
Since the measurement is spatially confined, the
user has flexibility in terms of magnet shapes
and configurations. This helps relax mechanical
tolerances and, in case the end-of-shaft position
is not available, the MagAlpha MA300 operates
away from the axis of rotation (“side-shaft”
mounting).
Figure 1: Functional Block Diagram
Monolithic Power Systems, Inc. | Gland, Switzerland | Tel: [phone] | [e-mail] | www.sensimatech.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2014 Monolithic Power Systems. All Rights
Reserved. MA700 Rev 1.0 September 2014
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