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ST72141K2 データシート(PDF) 65 Page - STMicroelectronics |
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ST72141K2 データシート(HTML) 65 Page - STMicroelectronics |
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65 / 132 page  ST72141K 65/132 MOTOR CONTROLLER (Cont’d) Figure 41. Step Behaviour of one Output Channel MCO[n] in Current / Sensorless Mode Figure 42. Step Behaviour of one Output Channel MCO[n] in Current / Sensor Mode (Current Mode without polarity effect, sensorless mode: SR=0) Demagnetization Step 1 0 Toff Toff xx x 11 10 01 1 0 11 10 00 00 01 x xx OS1 OS0 OS2 OS2 PWM behaviour before D 0 1 On Even Channels On Odd Channels OS[1:0] PWM behaviour after D 00 01 On Even Channels On Odd Channels 10 11 Alternate Odd/Even On all active Channels 1 0 1 0 1 0 1 0 1 0 (Current Mode without polarity effect, sensor mode: SR=1) Step xx 11 10 01 11 10 00 00 01 xx OS1 OS0 1 0 OS2 Not used - OS[1:0] PWM behaviour after D 00 01 On Even Channels On Odd Channels 10 11 Alternate Odd/Even On all active Channels 1.25us 1.25us In sensor mode, there is no demagnetisation event and the PWM behaviour is the same for the complete step time. |
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