DRV3202-Q1_15 Datasheet, PDF (24/39 Pages) Texas Instruments – 3-Phase Brushless Motor Driver

DRV3202-Q1
SLVSBJ4A – OCTOBER 2012 – REVISED DECEMBER 2012
www.ti.com
Motor
Overcurrent
OVAD
OVCR
PreDRV
Enable
Disable
Figure 19. Motor Overcurrent Event
Enable
Table 3. Motor Overcurrent Truth Table
RES
0
1
OVCR
–
0
1
MOTOR OVERCURRENT
–
–
0
1
OVAD
0 (Clear)
0 (Clear)⁽²⁾⁽³⁾
Keep
1 (Set)
PRE-DRIVER ENABLE OR DISABLE
Disable ⁽¹⁾
Enable
Enable
Disable
(1) The CTLEN goes to Hi-Z because the external CPU will not drive it when RES = 0, then all the pre-drivers are turned off because
CTLEN is internally pulled down.
(2) The OVAD is not set, even if a motor overcurrent error is generated during OVCR = 0.
(3) The OVAD is cleared if OVCR = 0 even when the motor overcurrent error is generated.
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