DRV8829_15 Datasheet, PDF (13/27 Pages) Texas Instruments – DRV8829 5-A 45-V Single H-Bridge Motor Driver

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8 Application and Implementation
DRV8829
SLVSA74E – MAY 2010 – REVISED SEPTEMBER 2015
NOTE
Information in the following applications sections is not part of the TI component
specification, and TI does not warrant its accuracy or completeness. TI’s customers are
responsible for determining suitability of components for their purposes. Customers should
validate and test their design implementation to confirm system functionality.
8.1 Application Information
The DRV8829 is used in brushed motor or stepper control.
8.2 Typical Application
In this application, the DRV8829 will be used to drive a brushed-DC motor. The following design procedure can
be used to configure the DRV8829.
10 kŸ
0.47 µF
DRV8829PWP
28
1
GND
CP1
27
2
0.01 µF
I4
CP2
26
3
I3
VCP
25
4
0.1 µF
I2
VM
24
5
I1
OUT1
23
6 ^{100 mŸ}
I0
ISEN
22
7
NC
OUT2
21
8
ENBL
OUT2
20
9
PHASE
ISEN
19
10
DECAY
OUT1
18
11
nFAULT
VM
17
12
nSLEEP
VREF
16
13
nRESET
VREF
15
14
V3P3OUT
GND
R1
1 MŸ
BDC
0.1 µF
R2
VM
0.1 µF
VM
+
100 µF
Figure 5. Typical Application Schematic
8.2.1 Design Requirements
Table 3 gives design input parameters for system design.
Table 3. Design Parameters
DESIGN PARAMETER
Supply voltage
Motor winding resistance
Motor winding inductance
Target chopping current
REFERENCE
VM
R_L
L_L
I_TRIP
EXAMPLE VALUE
24 V
0.83 Ω
232.5 µH
3.5 A
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