DRV8829_15 Datasheet, PDF (17/27 Pages) Texas Instruments – DRV8829 5-A 45-V Single H-Bridge Motor Driver

www.ti.com
10 Layout
DRV8829
SLVSA74E – MAY 2010 – REVISED SEPTEMBER 2015
10.1 Layout Guidelines
Each VM terminal must be bypassed to GND using a low-ESR ceramic bypass capacitors with recommended
values of 0.1 μF rated for VM. These capacitors should be placed as close to the VM pins as possible with a
thick trace or ground plane connection to the device GND pin.
The VM pin must be bypassed to ground using a bulk capacitor rated for VM. This component may be an
electrolytic.
A low-ESR ceramic capacitor must be placed in between the CP1 and CP2 pins. TI recommends a value of 0.1
μF rated for VM . Place this component as close to the pins as possible.
A low-ESR ceramic capacitor must be placed in between the VM and VCP pins. TI recommends a value of 0.47
μF rated for 16 V. Place this component as close to the pins as possible. In addition, place a 1 MΩ between VM
and VCP.
Bypass V3P3OUT to ground with a ceramic capacitor rated 6.3 V. Place this bypassing capacitor as close to the
pin as possible.
The current sense resistor should be placed as close as possible to the device pins to minimize trace inductance
between the pin and resistor.
10.2 Layout Example
0.1 µF
0.1 µF
1 MŸ
0.47 µF
0.1 µF
CP1
CP2
VCP
VM
OUT1
ISEN
OUT2
OUT2
ISEN
OUT1
VM
VREF
VREF
GND
GND
I4
I3
I2
I1
I0
NC
ENBL
PHASE
DECAY
nFAULT
nSLEEP
nRESET
V3P3OUT
0.1 µF
Figure 10. Example Layout
Copyright © 2010–2015, Texas Instruments Incorporated
Product Folder Links: DRV8829
Submit Documentation Feedback
17