DRV10983_15 Datasheet, PDF (44/57 Pages) Texas Instruments – DRV10983 12- to 24-V, Three-Phase, Sensorless BLDC Motor Driver

DRV10983
SLVSCP6B – JULY 2014 – REVISED FEBRUARY 2015
Table 9. Register Description (continued)
Register
Name
Address Bits
Data
SysOpt6 ⁽³⁾
0x28
7:4 SWiLimitThr [3:0]
3:1 HWiLimitThr [2:0]
0 N/A
7 LockEn[5]
SysOpt7 ⁽³⁾
0x29
6:4 ClsLpAccel[2:0]
SysOpt8 ⁽³⁾
3:0 Deadtime[3:0]
7:4 IPDCurrThr[3:0]
0x2A
3 LockEn[4]
2 VregSel
1:0 IPDClk[1:0]
7:6 FGOLSel[1:0]
SysOpt9 ⁽³⁾
5:4 FGcycle[1:0]
0x2B
3:2 KtLckThr[1:0]
1 SpdCtrlMd
0 CLoopDis
Description
Acceleration current limit threshold
0000 = No acceleration current limit
0001 = 0.2-A current limit
xxxx = n × 0.2 A current limit
Lock detection current limit threshold
(n + 1) × 0.4 A
N/A
Stuck in closed loop (no zero cross detected). Enabled when high
Closed loop accelerate
000 = Inf fast
001 = 48 VCC/s
010 = 48 VCC/s
011 = 0.77 VCC/s
100 = 0.37 VCC/s
101 = 0.19 VCC/s
110 = 0.091 VCC/s
111 = 0.045 VCC/s
Dead time between HS and LS gate drive for motor phases
0000 = 40 ns
xxxx = (n + 1) × 40 ns
IPD (inductive sense) current threshold
0000 = No IPD function. Align and Go
0001 = 0.4-A current threshold.
xxxx = 0.2 A × (n + 1) current threshold.
Open loop stuck (no zero cross detected). Enabled when high
Buck regulator voltage select
0: Vreg = 5 V
1: Vreg = 3.3 V
Inductive sense clock
00 = 12 Hz;
01 = 24 Hz;
10 = 47 Hz;
11 = 95 Hz
FG open loop output select
00 = FG outputs in both open loop and closed loop
01 = FG outputs only in closed loop
10 = FG outputs closed loop and the first open loop
11 = Reserved
FG cycle select
00 = 1 pulse output per electrical cycle
01 = 2 pulses output per 3 electrical cycles
10 = 1 pulse output per 2 electrical cycles
11 = 1 pulse output per 3 electrical cycles
Abnormal Kt lock detect threshold
00 = Kt_high = 3/2Kt. Kt_low = 3/4Kt
01 = Kt_high = 2Kt. Kt_low = 3/4Kt
10 = Kt_high = 3/2Kt. Kt_low = 1/2Kt
11 = Kt_high = 2Kt. Kt_low = 1/2Kt
Speed input mode
0 = Analog input expected at SPEED pin
1 = PWM input expected at SPEED pin
0 = Transfer to closed loop at Op2ClsThr speed
1 = No transfer to closed loop. Keep in open loop
www.ti.com
44
Submit Documentation Feedback
Product Folder Links: DRV10983
Copyright © 2014–2015, Texas Instruments Incorporated