DRV8828_15 Datasheet, PDF (3/21 Pages) Texas Instruments – H-BRIDGE MOTOR CONTROLLER IC

DRV8828
www.ti.com
SLVSA11F – OCTOBER 2009 – REVISED DECEMBER 2013
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
16
VREF
12, 13
nSLEEP
NC
STATUS
nFAULT
OUTPUT
ISEN
OUT1
OUT2
17
22
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
Current set reference input
I
Sleep mode input
No connect
OD
Fault
IO
Bridge ground / Isense
O
Bridge output 1
O
Bridge output 2
EXTERNAL COMPONENTS
OR CONNECTIONS
Connect to motor supply (8 - 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 and a
1-MΩ resistor 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.
Reference voltage for winding current set. Both
pins must be connected together on the PCB. A
0.01-µF bypass capacitor to GND is
recommended.
Logic high to enable device, logic low to enter low-
power sleep mode. Internal pulldown.
Leave this pin unconnected.
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
Copyright © 2009–2013, Texas Instruments Incorporated
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