DRV8320 Datasheet, PDF (29/80 Pages) Texas Instruments – 6 to 60-V Three-Phase Smart Gate Driver

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DRV8320, DRV8320R
DRV8323, DRV8323R
SLVSDJ3 – FEBRUARY 2017
The INLC input brakes the motor by turning off all high-side MOSFETs and turning on all low-side MOSFETs
when it is pulled low. This brake is independent of the states of the other input pins. Tie the INLC pin high if this
feature is not required.
STATE
Stop
Align
1
2
3
4
5
6
Table 3. Synchronous 1x PWM Mode
INLA
0
1
1
1
1
0
0
0
LOGIC AND HALL INPUTS
INHC = 0
INHB INLB INLA
0
0
0
1
1
1
1
0
0
0
0
0
0
1
0
0
1
1
1
1
1
1
0
1
INHC = 1
INHB
0
1
0
1
1
1
0
0
INLB
0
1
1
1
0
0
0
1
PHASE A
GHA
GLA
L
L
PWM !PWM
L
L
PWM !PWM
PWM !PWM
L
L
L
H
L
H
GATE-DRIVE OUTPUTS
PHASE B
PHASE C
GHB
GLB
GHC
GLC
L
L
L
L
L
H
L
H
PWM !PWM
L
H
L
L
L
H
L
H
L
L
L
H
PWM !PWM
L
L
PWM !PWM
PWM !PWM
L
L
DESCRIPTION
Stop
Align
B→C
A→C
A→B
C→B
C→A
B→A
STATE
Stop
Align
1
2
3
4
5
6
Table 4. Asynchronous 1x PWM Mode 1PWM_COM = 1 (SPI Only)
INLA
0
1
1
1
1
0
0
0
LOGIC AND HALL INPUTS
INHC = 0
INHB INLB INLA
0
0
0
1
1
1
1
0
0
0
0
0
0
1
0
0
1
1
1
1
1
1
0
1
INHC = 1
INHB
0
1
0
1
1
1
0
0
INLB
0
1
1
1
0
0
0
1
PHASE A
GHA
GLA
L
L
PWM
L
L
L
PWM
L
PWM
L
L
L
L
H
L
H
GATE-DRIVE OUTPUTS
PHASE B
PHASE C
GHB
GLB
GHC
GLC
L
L
L
L
L
H
L
H
PWM
L
L
H
L
L
L
H
L
H
L
L
L
H
PWM
L
L
L
PWM
L
PWM
L
L
L
Figure 18 and Figure 19 show the different possible configurations in 1x PWM mode.
DESCRIPTION
Stop
Align
B→C
A→C
A→B
C→B
C→A
B→A
MCU_PWM
MCU_GPIO
MCU_GPIO
MCU_GPIO
MCU_GPIO
MCU_GPIO
INHA
INLA
INHB
INLB
INHC
INLC
PWM
STATE0
STATE1
STATE2
DIR
nBRAKE
MCU_PWM
BLDC Motor
MCU_GPIO
MCU_GPIO
INHA
INLA
INHB
INLB
INHC
INLC
PWM
STATE0
STATE1
STATE2
DIR
nBRAKE
H
H
BLDC Motor
H
Figure 18. 1x PWM—Simple Controller
Figure 19. 1x PWM—Hall Sensor
8.3.1.1.4 Independent PWM Mode (PWM_MODE = 11b or MODE Pin Tied to DVDD)
In this mode, the corresponding input pin independently controls each high-side and low-side gate driver. This
control mode allows for the DRV832x family of devices to drive separate high-side and low-side loads with each
half-bridge. These types of loads include unidirectional brushed DC motors, solenoids, and low-side and high-
side switches. In this mode, if the system is configured in a half-bridge configuration, simultaneously turning on
both the high-side and low-side MOSFETs causes shoot-through.
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