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DRV8701 Datasheet(PDF) 14 Page - Texas Instruments

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Part # DRV8701
Description  DRV8701 Brushed DC Motor Full-Bridge Gate Driver
PDF  42 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

DRV8701 Datasheet(HTML) 14 Page - Texas Instruments

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SH1
SH2
2
1
2
2
Forward drive
Slow decay (brake)
VM
1
SH1
SH2
2
1
2
2
Reverse drive
Slow decay (brake)
VM
1
3
3 High-Z (coast)
3 High-Z (coast)
3
DRV8701
SLVSCX5B – MARCH 2015 – REVISED JULY 2015
www.ti.com
7.3 Feature Description
7.3.1 Bridge Control
The DRV8701E is controlled using a PH/EN interface. The following logic table (Table 1) gives the full H-bridge
state when driving a single brushed DC motor. Note that Table 1 does not take into account the current control
built into the DRV8701E. Positive current is defined in the direction of xOUT1
→ xOUT2.
Table 1. DRV8701E (PH/EN) Control Interface
nSLEEP
EN
PH
SH1
SH2
AVDD/DVDD
Description
0
X
X
High-Z
High-Z
Disabled
Sleep mode; H-bridge disabled High-Z
1
0
X
L
L
Enabled
Brake, low-side slow decay
1
1
0
L
H
Enabled
Reverse drive (current SH2
→ SH1)
1
1
1
H
L
Enabled
Forward drive (current SH1
→ SH2)
The DRV8701P is controlled using a PWM interface (IN1/IN2). The following logic table (Table 2) gives the full H-
bridge state when driving a single brushed DC motor. Note that Table 2 does not take into account the current
control built into the DRV8701P. Positive current is defined in the direction of xOUT1
→ xOUT2.
Table 2. DRV8701P (PWM) Control Interface
nSLEEP
IN1
IN2
SH1
SH2
AVDD/DVDD
Description
0
X
X
High-Z
High-Z
Disabled
Sleep mode; H-bridge disabled High-Z
1
0
0
High-Z
High-Z
Enabled
Coast; H-bridge disabled High-Z
1
0
1
L
H
Enabled
Reverse (current SH2
→ SH1)
1
1
0
H
L
Enabled
Forward (current SH1
→ SH2)
1
1
1
L
L
Enabled
Brake; low-side slow decay
Figure 19. H-Bridge Operational States
14
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Copyright © 2015, Texas Instruments Incorporated
Product Folder Links: DRV8701



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