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| DRV10987 Datasheet, PDF (56/69 Pages) Texas Instruments – DRV10987 12- to 24-V, Three-Phase, Sensorless BLDC Motor Driver | |||
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DRV10987
SLVSE89 â AUGUST 2017
Bit Field
15
Reserved
14
AccelRangeSel
13:11 StAccel2[2:0]
10:8 StAccel[2:0]
7:3 Op2ClsThr[4:0]
2:0 AlignTime[2:0]
Table 30. CONFIG4 Register Field Descriptions
Type
R
R/W
Reset
0
0
R/W
000
R/W
0
R/W
0
R/W
0
Description
Do not access this bit
Acceleration range selection
0: Fast
1: Slow
Open-loop start-up acceleration (second-order)
AccelRangeSel = 0; 000: 57 Hz/s2
AccelRangeSel = 0; 001 = 29 Hz/s2
AccelRangeSel = 0; 010 = 14 Hz/s2
AccelRangeSel = 0; 011 = 6.9 Hz/s2
AccelRangeSel = 0; 100 = 3.3 Hz/s2
AccelRangeSel = 0; 101 = 1.6 Hz/s2
AccelRangeSel = 0; 110 = 0.66 Hz/s2
AccelRangeSel = 0; 111 = 0 Hz/s2
AccelRangeSel = 1; 000 = 0.22 Hz/s2
AccelRangeSel = 1; 001 = 0.11 Hz/s2
AccelRangeSel = 1; 010 = 0.055 Hz/s2
AccelRangeSel = 1; 011 = 0.027 Hz/s2
AccelRangeSel = 1; 100 = 0.013 Hz/s2
AccelRangeSel = 1; 101 = 0.0063 Hz/s2
AccelRangeSel = 1; 110 = 0.0026 Hz/s2
AccelRangeSel = 1; 111 = 0 Hz/s2
Open-loop start-up acceleration (first-order)
AccelRangeSel = 0; 000 = 76 Hz/s
AccelRangeSel = 0; 001 = 38 Hz/s
AccelRangeSel = 0; 010 = 19 Hz/s
AccelRangeSel = 0; 011 = 9.2 Hz/s
AccelRangeSel = 0; 100 = 4.5 Hz/s
AccelRangeSel = 0; 101 = 2.1 Hz/s
AccelRangeSel = 0; 110 = 0.9 Hz/s
AccelRangeSel = 0; 111 = 0.3 Hz/s
AccelRangeSel = 1; 000 = 4.8 Hz/s
AccelRangeSel = 1; 001 = 2.4 Hz/s
AccelRangeSel = 1; 010 = 1.2 Hz/s
AccelRangeSel = 1; 011 = 0.58 Hz/s
AccelRangeSel = 1; 100 = 0.28 Hz/s
AccelRangeSel = 1; 101 = 0.13 Hz/s
AccelRangeSel = 1; 110 = 0.056 Hz/s
AccelRangeSel = 1; 111 = 0.019 Hz/s
Open- to closed-loop threshold
0 xxxx = Range 0: n à 0.8 Hz
0 0000 = N/A
0 0001 = 0.8 Hz
0 0111 = 5.6 Hz
0 1111 = 12 Hz
1 xxxx = Range 1: (n + 1) Ã 12.8 Hz
1 0000 = 12.8 Hz
1 0001 = 25.6 Hz
...
1 0111 = 192 Hz
1 1111 = 204.8 Hz
Align time.
000 = 5.3 s
001 = 2.7 s
010 = 1.3 s
011 = 0.67 s
100 = 0.33 s
101 = 0.16 s
110 = 0.08 s
111 = 0.04 s
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