DRV10987 Datasheet, PDF (57/69 Pages) Texas Instruments – DRV10987 12- to 24-V, Three-Phase, Sensorless BLDC Motor Driver

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8.5.3.25 CONFIG5 Register (address = 0x94) [reset = 0x00]
DRV10987
SLVSE89 – AUGUST 2017
Figure 63. CONFIG5 Register
15
OTWarning
Limit[1]
R/W-0
14
OTWarning
Limit[0]
R/W-0
13
LockEn5
R/W-0
12
LockEn4
R/W-0
11
LockEn3
R/W-0
10
LockEn2
R/W-0
9
LockEn1
R/W-0
8
LockEn0
R/W-0
7
SWiLimitThr [3]
R/W-0
6
SWiLimitThr [2]
R/W-0
5
SWiLimitThr [1]
R/W-0
4
SWiLimitThr [0]
R/W-0
3
HWiLimitThr [2]
R/W-0
2
1
HWiLimitThr [1] HWiLimitThr [0]
R/W-0
R/W-0
0
IPDasHwILimit
R/W-0
Table 31. CONFIG5 Register Field Descriptions
Bit
15:14
Field
OTWarningLimit[1:0]
13
LockEn5
12
LockEn4
11
LockEn3
10
LockEn2
9
LockEn1
8
LockEn0
7:4 SWiLimitThr[3:0]
3:1 HWiLimitThr[2:0]
0
IPDasHwILimit
Type
R/W
Reset
00
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0x0
R/W
000
R/W
0
Description
Overtemperature warning current limit
00: No temperature-based current-limit function, uses
SWILimitThr
01: Limit current to 1 A when overtemperature warning reached
10: Limit current to 1.6 A when overtemperature warning
reached
11: Limit current to 2 A when overtemperature warning reached
Stuck in closed loop (no zero cross detected). Enabled when
high
Open loop stuck (no zero cross detected). Enabled when high
No motor fault. Enabled when high
Abnormal Kt. Enabled when high
Abnormal speed. Enabled when high
Lock-detection current limit. Enabled when high.
Acceleration current limit threshold
0000: No acceleration current limit
0001: 0.2-A current limit
0010 to 1111: n × 0.2 A current limit
HWILimitThr: Current limit for lock detection
If IPDasHwILimit = 0 then
x00: 2.5 A
x01: 1.9 A
x10: 1.5 A
x11: 0.9 A
If IPDasHwILimit = 1 then
000: 0.4 A
001: 0.8 A
010: 1.2 A
011: 1.6 A
100: 2 A
101: 2.4 A
110: 2.8 A
111: 3.2 A
0: Range1 of current limit for lock detection
1: Range2 of current limit for lock detection
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