DRV8320_17 Datasheet, PDF (52/89 Pages) Texas Instruments – 6 to 60-V Three-Phase Smart Gate Driver

DRV8320, DRV8320R
DRV8323, DRV8323R
SLVSDJ3A – FEBRUARY 2017 – REVISED APRIL 2017
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8.6.1 Status Registers
The status registers are used to reporting warning and fault conditions. The status registers are read-only
registers
Complex bit access types are encoded to fit into small table cells. Table 12 shows the codes that are used for
access types in this section.
Table 12. Status Registers Access Type Codes
Access Type Code
Read Type
R
R
Reset or Default Value
-n
Description
Read
Value after reset or the default value
8.6.1.1 Fault Status Register 1 (address = 0x00h)
The fault status register 1 is shown in Figure 44 and described in Table 13.
Register access type: Read only
Figure 44. Fault Status Register 1
10
FAULT
R-0b
9
VDS_OCP
R-0b
8
GDF
R-0b
7
UVLO
R-0b
6
OTSD
R-0b
5
VDS_HA
R-0b
4
VDS_LA
R-0b
3
VDS_HB
R-0b
2
VDS_LB
R-0b
1
VDS_HC
R-0b
0
VDS_LC
R-0b
Bit Field
10
FAULT
9
VDS_OCP
8
GDF
7
UVLO
6
OTSD
5
VDS_HA
4
VDS_LA
3
VDS_HB
2
VDS_LB
1
VDS_HC
0
VDS_LC
Table 13. Fault Status Register 1 Field Descriptions
Type
R
R
R
R
R
R
R
R
R
R
R
Default
0b
0b
0b
0b
0b
0b
0b
0b
0b
0b
0b
Description
Logic OR of FAULT status registers. Mirrors nFAULT pin.
Indicates VDS monitor overcurrent fault condition
Indicates gate drive fault condition
Indicates undervoltage lockout fault condition
Indicates overtemperature shutdown
Indicates VDS overcurrent fault on the A high-side MOSFET
Indicates VDS overcurrent fault on the A low-side MOSFET
Indicates VDS overcurrent fault on the B high-side MOSFET
Indicates VDS overcurrent fault on the B low-side MOSFET
Indicates VDS overcurrent fault on the C high-side MOSFET
Indicates VDS overcurrent fault on the C low-side MOSFET
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