DRV8829 Datasheet, PDF (3/17 Pages) Texas Instruments – H-BRIDGE MOTOR DRIVER IC

DRV8829
www.ti.com
SLVSA74B – MAY 2010 – REVISED MAY 2011
Table 1. TERMINAL FUNCTIONS
NAME
PIN
POWER AND GROUND
GND
14, 28
VM
4, 11
V3P3OUT
15
CP1
1
CP2
2
VCP
3
CONTROL
ENBL
21
PHASE
20
I0
23
I1
24
I2
25
I3
26
I4
27
DECAY
19
nRESET
nSLEEP
VREF
STATUS
nFAULT
OUTPUT
ISEN
OUT1
OUT2
16
17
12, 13
18
6, 9
5, 10
7, 8
I/O ⁽¹⁾
DESCRIPTION
-
Device ground
-
Bridge power supply
O
3.3-V regulator output
IO
Charge pump flying capacitor
IO
Charge pump flying capacitor
IO
High-side gate drive voltage
I
Bridge enable
I
Bridge phase (direction)
I
I
I
Current set inputs
I
I
I
Decay mode
I
Reset input
I
Sleep mode input
I
Current set reference input
OD
Fault
IO
Bridge ground / Isense
O
Bridge output 1
O
Bridge output 2
EXTERNAL COMPONENTS
OR CONNECTIONS
Connect to motor supply (8.2 - 45 V). Both pins
must be connected to same supply.
Bypass to GND with a 0.47-μF 6.3-V ceramic
capacitor. Can be used to supply VREF.
Connect a 0.01-μF 50-V capacitor between CP1
and CP2.
Connect a 0.1-μF 16-V ceramic capacitor to VM.
Logic high to enable H-bridge. Internal pulldown.
Logic high sets OUT1 high, OUT2 low. Internal
pulldown.
Sets winding current as a percentage of full-scale.
Internal pulldown.
Low = slow decay, open = mixed decay,
high = fast decay
Internal pulldown and pullup.
Active-low reset input initializes internal logic and
disables the H-bridge outputs. Internal pulldown.
Logic high to enable device, logic low to enter
low-power sleep mode. Internal pulldown.
Reference voltage for winding current set. Both
pins must be connected together on the PCB.
Logic low when in fault condition (overtemp,
overcurrent)
Connect to current sense resistor. Both pins must
be connected together on the PCB.
Connect to motor winding. Both pins must be
connected together on the PCB.
(1) Directions: I = input, O = output, OZ = tri-state output, OD = open-drain output, IO = input/output
PWP (HTSSOP) PACKAGE
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