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AS5047U-HTST датащи(PDF) 32 Page - ams AG |
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AS5047U-HTST датащи(HTML) 32 Page - ams AG |
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32 / 51 page ![]() Page 32 ams Datasheet Document Feedback [v1-00] 2018-Oct-30 AS5047U − Detailed Description UVW Commutation Interface The AS5047U can emulate the UVW signals generated by the three discrete Hall switches commonly used in BLDC motors. The UVWPP field in the SETTINGS3 register selects the number of pole pairs of the motor (from 1 to 7 pole pairs). The UVW signals are generated based on14-bit core resolution. During the start-up time, after power on of the chip, the UVW signals are low. Figure 51: UVW Signals The Figure 51 shows the UVW signal flow if the magnet rotates in clockwise direction and counter-clockwise direction (DIR=0). The rotation direction of the magnet is defined as clockwise (DIR=0) when the view is from the topside of AS5047U. With the bit DIR, it is possible to invert the rotation direction. 180° 240° 300° 360° 120° 60° U V W 0° angle Clockwise rotation Counter-clockwise rotation 180° 240° 300° 360° 120° 60° 0° |
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