DRV8711_15 Datasheet, PDF (4/44 Pages) Texas Instruments – DRV8711 Stepper Motor Controller IC

DRV8711
SLVSC40E – JUNE 2013 – REVISED MARCH 2015
www.ti.com
PIN
NAME
NO.
SDATO
17
STATUS
STALLn/
19
BEMFVn
FAULTn
18
BEMF
20
OUTPUTS
A1HS
36
AOUT1
37
A1LS
35
A2HS
31
AOUT2
30
A2LS
32
AISENP
34
AISENN
33
B1HS
27
BOUT1
28
B1LS
26
B2HS
22
BOUT2
21
B2LS
23
BISENP
25
BISENN
24
Pin Functions (continued)
I/O ⁽¹⁾
DESCRIPTION
EXTERNAL COMPONENTS OR CONNECTIONS
O Serial data output
Serial data output to controller. Open-drain output requires external
pullup.
OD Stall/Back EMF valid
OD Fault
O Back EMF
Internal stall detect mode: logic low when motor stall detected.
External stall detect mode: Active low when valid back EMF
measurement is ready.
Open-drain output requires external pullup.
Logic low when in fault condition. Open-drain output requires external
pullup.
Faults: OCP, PDF, OTS, UVLO
Analog output voltage represents motor back EMF. Place a 1-nF low-
leakage capacitor to ground on this pin.
O Bridge A out 1 HS gate
I Bridge A output 1
O Bridge A out 1 LS gate
O Bridge A out 2 HS gate
I Bridge A output 2
O Bridge A out 2 LS gate
I Bridge A Isense + in
I Bridge A Isense – in
O Bridge B out 1 HS gate
I Bridge B output 1
O Bridge B out 1 LS gate
O Bridge B out 2 HS gate
I Bridge B output 2
O Bridge B out 2 LS gate
I Bridge B Isense + in
I Bridge B Isense – in
Connect to gate of HS FET for bridge A out 1
Connect to output node of external FETs of bridge A out 1
Connect to gate of LS FET for bridge A out 1
Connect to gate of HS FET for bridge A out 2
Connect to output node of external FETs of bridge A out 2
Connect to gate of LS FET for bridge A out 2
Connect to current sense resistor for bridge A
Connect to ground at current sense resistor for bridge A
Connect to gate of HS FET for bridge B out 1
Connect to output node of external FETs of bridge B out 1
Connect to gate of LS FET for bridge B out 1
Connect to gate of HS FET for bridge B out 2
Connect to output node of external FETs of bridge B out 2
Connect to gate of LS FET for bridge B out 2
Connect to current sense resistor for bridge B
Connect to ground at current sense resistor for bridge B
Table 1. Critical Components
PIN
NAME
COMPONENT
4
VM
100-µF electrolytic rated for VM voltage to GND 0.01-µF ceramic rated for VM voltage to GND
3
VCP
1-µF ceramic X7R rated 16 V to VCP
1, 2
CP1, CP2
0.1-µF rated for VM + 12 V between these pins
6
V5
0.1-µF ceramic X7R rated 6.3 V to GND
7
VINT
1-µF ceramic X7R rated 6.3 V to GND
17
SDATO
Requires external pullup to logic supply
18
FAULTn
Requires external pullup to logic supply
19
STALLn/BEMFVn
Requires external pullup to logic supply
20
BEMF
1-nF low-leakage capacitor to GND
4
Submit Documentation Feedback
Product Folder Links: DRV8711
Copyright © 2013–2015, Texas Instruments Incorporated