DRV8320_17 Datasheet, PDF (30/89 Pages) Texas Instruments – 6 to 60-V Three-Phase Smart Gate Driver

DRV8320, DRV8320R
DRV8323, DRV8323R
SLVSDJ3A – FEBRUARY 2017 – REVISED APRIL 2017
STATE
Stop
Align
1
2
3
4
5
6
Table 6. 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.
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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
BLDC Motor
MCU_PWM
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.
Table 7. Independent PWM Mode Truth Table
INLx
INHx
GLx
GHx
0
0
L
L
0
1
L
H
1
0
H
L
1
1
H
H
30
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