DRV8846_15 Datasheet, PDF (16/35 Pages) Texas Instruments – DRV8846 Dual H-Bridge Stepper Motor Driver

DRV8846
SLLSEK2 – JUNE 2014
Table 5. Torque DAC Settings
I1
I0
CURRENT SCALING (TORQUE)
0
0
100%
0
Z
87.5%
0
1
75%
Z
0
62.5%
Z
Z
50%
Z
1
37.5%
1
0
25%
1
Z
12.5%
1
1
0% (outputs disabled)
Table 6 gives the xISEN trip voltage at a given DAC code and I[1:0] setting.
Sine DAC
Code
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
00 - 100%
500 mV
500 mV
495 mV
490 mV
485 mV
480 mV
470 mV
460 mV
450 mV
440 mV
430 mV
415 mV
400 mV
385 mV
370 mV
355 mV
335 mV
315 mV
300 mV
280 mV
255 mV
235 mV
215 mV
190 mV
170 mV
145 mV
120 mV
100 mV
75 mV
50 mV
25 mV
0 mV
Table 6. Torque DAC xISENS Trip Levels (VREF = 3.3 V)
0Z - 87.5%
438 mV
438 mV
433 mV
429 mV
424 mV
420 mV
411 mV
403 mV
394 mV
385 mV
376 mV
363 mV
350 mV
337 mV
324 mV
311 mV
293 mV
276 mV
263 mV
245 mV
223 mV
206 mV
188 mV
166 mV
149 mV
127 mV
105 mV
88 mV
66 mV
44 mV
22 mV
0 mV
01 - 75%
375 mV
375 mV
371 mV
368 mV
364 mV
360 mV
353 mV
345 mV
338 mV
330 mV
323 mV
311 mV
300 mV
289 mV
278 mV
266 mV
251 mV
236 mV
225 mV
210 mV
191 mV
176 mV
161 mV
143 mV
128 mV
109 mV
90 mV
75 mV
56 mV
38 mV
19 mV
0 mV
Torque DAC I[1:0] Setting
Z0 - 62.5% ZZ - 50%
313 mV
250 mV
313 mV
250 mV
309 mV
248 mV
306 mV
245 mV
303 mV
243 mV
300 mV
240 mV
294 mV
235 mV
288 mV
230 mV
281 mV
225 mV
275 mV
220 mV
269 mV
215 mV
259 mV
208 mV
250 mV
200 mV
241 mV
193 mV
231 mV
185 mV
222 mV
178 mV
209 mV
168 mV
197 mV
158 mV
188 mV
150 mV
175 mV
140 mV
159 mV
128 mV
147 mV
118 mV
134 mV
108 mV
119 mV
95 mV
106 mV
85 mV
91 mV
73 mV
75 mV
60 mV
63 mV
50 mV
47 mV
38 mV
31 mV
25 mV
16 mV
13 mV
0 mV
0 mV
Z1 - 37.5%
188 mV
188 mV
186 mV
184 mV
182 mV
180 mV
176 mV
173 mV
169 mV
165 mV
161 mV
156 mV
150 mV
144 mV
139 mV
133 mV
126 mV
118 mV
113 mV
105 mV
96 mV
88 mV
81 mV
71 mV
64 mV
54 mV
45 mV
38 mV
28 mV
19 mV
9 mV
0 mV
10 - 25%
125 mV
125 mV
124 mV
123 mV
121 mV
120 mV
118 mV
115 mV
113 mV
110 mV
108 mV
104 mV
100 mV
96 mV
93 mV
89 mV
84 mV
79 mV
75 mV
70 mV
64 mV
59 mV
54 mV
48 mV
43 mV
36 mV
30 mV
25 mV
19 mV
13 mV
6 mV
0 mV
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1Z - 12.5%
63 mV
63 mV
62 mV
61 mV
61 mV
60 mV
59 mV
58 mV
56 mV
55 mV
54 mV
52 mV
50 mV
48 mV
46 mV
44 mV
42 mV
39 mV
38 mV
35 mV
32 mV
29 mV
27 mV
24 mV
21 mV
18 mV
15 mV
13 mV
9 mV
6 mV
3 mV
0 mV
16
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