DRV8320 Datasheet, PDF (57/80 Pages) Texas Instruments – 6 to 60-V Three-Phase Smart Gate Driver

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DRV8320, DRV8320R
DRV8323, DRV8323R
SLVSDJ3 – FEBRUARY 2017
8.6.2.5 CSA Control Register (DRV8323x Only) (address = 0x06h)
The CSA control register is shown in Figure 50 and described in Table 18.
Register access type: Read/Write
This register is only available with the DRV8323x family of devices.
Figure 50. CSA Control Register
10
CSA
_FET
R/W-0b
9
VREF
_DIV
R/W-1b
8
LS
_REF
R/W-0b
Bit Field
10
CSA_FET
9
VREF_DIV
8
LS_REF
7-6 CSA_GAIN
5
DIS_SEN
4
CSA_CAL_A
3
CSA_CAL_B
2
CSA_CAL_C
1-0 SEN_LVL
7
6
CSA
_GAIN
R/W-10b
5
DIS
_SEN
R/W-0b
4
CSA
_CAL_A
R/W-0b
3
CSA
_CAL_B
R/W-0b
2
CSA
_CAL_C
R/W-0b
1
0
SEN
_LVL
R/W-11b
Table 18. CSA Control Field Descriptions
Type
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Default
0b
1b
0b
10b
0b
0b
0b
0b
11b
Description
0b = Sense amplifier positive input is SPx
1b = Sense amplifier positive input is SHx (also automatically
sets the LS_REF bit to 1)
0b = Sense amplifier reference voltage is VREF (unidirectional
mode)
1b = Sense amplifier reference voltage is VREF divided by 2
0b = VDS_OCP for the low-side MOSFET is measured
across SHx to SPx
1b = VDS_OCP for the low-side MOSFET is measured across
SHx to SNx
00b = 5-V/V shunt amplifier gain
01b = 10-V/V shunt amplifier gain
10b = 20-V/V shunt amplifier gain
11b = 40-V/V shunt amplifier gain
0b = Sense overcurrent fault is enabled
1b = Sense overcurrent fault is disabled
0b = Normal sense amplifier A operation
1b = Short inputs to sense amplifier A for offset calibration
0b = Normal sense amplifier B operation
1b = Short inputs to sense amplifier B for offset calibration
0b = Normal sense amplifier C operation
1b = Short inputs to sense amplifier C for offset calibration
00b = Sense OCP 0.25 V
01b = Sense OCP 0.5 V
10b = Sense OCP 0.75 V
11b = Sense OCP 1 V
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