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AS5147 Folha de dados(PDF) 19 Page - ams AG |
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AS5147 Folha de dados(HTML) 19 Page - ams AG |
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19 / 35 page ![]() ams Datasheet: 2014-Jun-27 [v1-04] AS5147 – 19 Detaile d Desc rip t ion UVW Commutation Interface The AS5147 can emulate the UVW signals generated by the three discrete Hall switches commonly used in BLDC motors. The UVWPP field in the SETTINGS register selects the number of pole pairs of the motor (from 1 to 7 pole pairs). The UVW signals are generated with 14-bit resolution. During the start-up time, after power on of the chip, the UVW signals are low. Figure 33: UVW Signals Figure 33 shows the UVW signals for a magnet rotating clockwise, as viewed from above the magnet and the AS5147.The (DIR=1) bit can be used to invert the sense of the rotation direction. U V W Electrical Angle 0° 60° 180° 240° 120° 300° 360° |
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