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| DRV8846_15 Datasheet, PDF (23/35 Pages) Texas Instruments – DRV8846 Dual H-Bridge Stepper Motor Driver | |||
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www.ti.com
DRV8846
SLLSEK2 â JUNE 2014
9 Application and Implementation
9.1 Application Information
The DRV8846 is used in stepper motor control. The following design procedure can be used to configure the
DRV8846.
9.2 Typical Application
Step
Motor
500 PÂ
500 PÂ
AOUT1
AISEN
AOUT2
BOUT2
BISEN
BOUT1
DRV8846
GND
(PPAD)
18
GND
VINT 17
NC 16
VM 15
VREF 14
DIR 13
2.2 µF
10 µF
0.1 µF
VM
VCC
logic supply
10 NÂ
9.2.1 Design Requirements
Table 11 gives design input parameters for system design.
Table 11. System Design Input Parameters
Design Parameter
Nominal supply voltage
Supply voltage range
Motor winding resistance
Motor winding inductance
Motor full step angle
Target stepping level
Target motor speed
Target chopping current
Chopping current reference voltage
Current scaling
Reference
VM
RL
LL
θstep
nm
v
ICHOP
VREF
TORQUE
Example Value
12 V
4 to 18 V
3.0 â¦/phase
330 µH/phase
1.8°/step
1/8 step
400 rpm
500 mA
3.3 V
100%
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