l9733 STMicroelectronics, l9733 Datasheet - Page 28

• Manufacturer Part Number: l9733
• Description: Octal Self Configuring Low/high Side Driver
• Manufacturer: STMicroelectronics

Fault operation
Figure 7.
Figure 8.
28/33
Four flap motors become sequentially driven. Unipolar stepper motor are
Four flap motors become sequentially driven. Unipolar stepper motor are
selected by 4 high-side configured switches. If the decoupling diodes are inside
selected by 4 high-side configured switches. If the decoupling diodes are inside
the motor housing, only 8 wires are needed to drive this arrangement.
the motor housing, only 8 wires are needed to drive this arrangement.
L9733
L9733
Stall sense
Stall sense
L9733 application schematic
L9733 HVAC applicative examples
SCLK
SCLK
GND
GND
VDO
VDO
IN7
IN7
IN8
IN8
IN6
IN6
RES
RES
VDD
VDD
Vbatt
Vbatt
DO
DO
CS
CS
DI
DI
To driver 6
To driver 6
To driver 7
To driver 7
To driver 8
To driver 8
SM
SM
SM
SM
8 HIGH/LOW SIDE DRIVER
8 HIGH/LOW SIDE DRIVER
SM
SM
High Side Driver
High Side Driver
High Side Driver
Configuration
Configuration
Configuration
Low Side Driver
Low Side Driver
Low Side Driver
Configuration
Configuration
Configuration
SM
SM
This allows to drive 3 DC-motors in sequential ly.
This allows to drive 3 DC-motors in sequential ly.
configured to high side build a quad half bridge.
configured to high side build a quad half bridge.
4 channels configured to low- and 4 channels
4 channels configured to low- and 4 channels
L9733
L9733
L9733
DRN[x]
DRN[x]
SRC[x]
SRC[x]
DRN[x]
DRN[x]
SRC[x]
SRC[x]
VBAT
VBAT
Vbatt
Vbatt
Vbatt
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
L9733