DRV8320 Datasheet, PDF (65/80 Pages) Texas Instruments – 6 to 60-V Three-Phase Smart Gate Driver

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DRV8320, DRV8320R
DRV8323, DRV8323R
SLVSDJ3 – FEBRUARY 2017
9.2.2 Alternative Application
In this application, a single sense amplifier is utilized in unidirectional mode for a summing current sense scheme
often used in trapezoidal or hall-based BLDC commutation control.
VCC
0.8 to 60 V, 600 mA
L_OUT
COUT
VM
CIN
100 k
R_FB1
R_FB2
47 nF
VM
1 µF
0.1 µF
VDRAIN
GHA
SHA
GLA
SPA
SNA
1
FB
2
PGND
3
CPL
4
CPH
5
VCP
6
VM
7
VDRAIN
8
GHA
9
SHA
10
GLA
11
SPA
12
SNA
GND
(PAD)
36
DVDD
35
AGND
34
CAL
33
ENABLE
32
nSCS
31
SCLK
30
SDI
29
SDO
28
nFAULT
27
DGND
26
VREF
25
SOA
3.3 V, 30 mA
1 µF
VCC
VCC
10 k
10 k
1 µF
VCC
VM
+
GHA
SHA
GLA
VM
VDRAIN
GHB
SHB
A
GLB
VM
GHC
B
SHC
GLC
VM
VM
+
C
SPA
SNA
R_SENSE
SPB
SPC
Figure 62. Alternative Application Schematic
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