DRV10983-Q1 Datasheet, PDF (54/72 Pages) Texas Instruments – Automotive, Three-Phase, Sensorless BLDC Motor Driver

DRV10983-Q1
SLVSD14 – JUNE 2017
www.ti.com
Bit
15
14:12
Field
Reserved
KtShift[2:0]
11:8 KtValue[3:0]
7
CommAdvMode
6:4 TCtrlAdvShift[2:0]
3:0 TCtrlAdvValue[3:0]
(1) EEPROM
Table 30. CONFIG2 Register Field Descriptions
Type
R
R/W
R/W
R/W
Reset
0
000
0x0
0
R/W
000
R/W
0x0
Description
Do not access this bit
Number of shift bits to determine the motor BEMF constant.
Kt = KtValue << KtShift
Commutation advance mode
0: Voltage advance is maintained at a fixed time⁽¹⁾ relative to the
estimated BEMF.
1: Voltage advance is maintained at a variable time relative to
the estimated BEMF based on: t_adv = t_setting × (U-BEMF) / U
Number of shift bits to determine the commutation advance
timing
t_adv = TCtrlAdvValue << TCtrlAdvShift
Commutation advance value.
8.5.3.24 CONFIG3 Register (address = 0x92) [reset = 0x00]
15
ISDThr[1]
R/W-0
7
OpenLCurr[1]
R/W-0
14
ISDThr[0]
R/W-0
6
OpenLCurr[0]
R/W-0
Figure 63. CONFIG3 Register
13
BrkCurThrSel
R/W-0
5
OpLCurrRt[2]
R/W-0
12
BEMF_HYS
R/W-0
4
OpLCurrRt[1]
R/W-0
11
ISDEn
R/W-0
3
OpLCurrRt[0]
R/W-0
10
RvsDrEn
R/W-0
2
BrkDoneThr[2]
R/W-0
9
RvsDrThr[1]
R/W-0
1
BrkDoneThr[1]
R/W-0
8
RvsDrThr[0]
R/W-0
0
BrkDoneThr[0]
R/W-0
Bit
15:14
Field
ISDThr[1:0]
13
BrkCurThrSel
12
BEMF_HYS
11
ISDEn
10
RvsDrEn
9:8 RvsDrThr[1:0]
Table 31. CONFIG3 Register Field Descriptions
Type
R/W
Reset
00
R/W
0
R/W
0
R/W
0
R/W
0
R/W
00
Description
ISD stationary judgment threshold
00: 6 Hz (80 ms, no zero cross)
01: 3 Hz (160 ms, no zero cross)
10: 1.6 Hz (320 ms, no zero cross)
11: 0.8 Hz (640 ms, no zero cross)
Brake current-level-threshold selection.
0: 24 mA
1: 48 mA
0: Low hysteresis for BEMF comparator (approximately 10 mV)
1: High hysteresis for BEMF comparator (approximately 20 mV)
0: Initial speed detect (ISD) disabled
1: ISD enabled
0: Reverse drive disabled
1: Reverse drive enabled
The threshold where device starts to process revers drive
(RvsDr) or brake.
00: 6.3 Hz
01: 13 Hz
10: 26 Hz
11: 51 Hz
54
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