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DRV8701ERGET Datasheet(数据表) 15 Page - Texas Instruments

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部件型号  DRV8701ERGET
说明  DRV8701 Brushed DC Motor Full-Bridge Gate Driver
下载  42 Pages
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制造商  TI [Texas Instruments]
网页  http://www.ti.com
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DRV8701ERGET Datasheet(HTML) 15 Page - Texas Instruments

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 15 page
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GH2
GL2
SH2
Gate
Drive
BDC
SP
RSENSE
Logic
PH/IN1
EN/IN2
nSLEEP
SNSOUT
+
-
SO
VREF
AV
SN
VM
Control
Inputs
nFAULT
Outputs
GH1
GL1
SH1
Gate
Drive
330
DRV8701
www.ti.com
SLVSCX5B – MARCH 2015 – REVISED JULY 2015
7.3.2 Half-Bridge Operation
The DRV8701 can be used to drive only a single half-bridge instead of a full H-bridge. To operate in this mode,
leave GH1 and GL1 disconnected. Also, connect a 1/10 W, 330-
Ω 5% resistor from SH1 to GND.
Figure 20. Half-H Bridge Operation Mode
For the DRV8701E, this mode is controlled by tying the PH pin low. Table 3 gives the control scheme. EN = 1
enables the high-side FET, and EN = 0 enables the low-side FET. EN = 1 and PH = 1 is an invalid state.
Table 3. DRV8701E (PH/EN) Control Interface for Half-H Bridge Mode
nSLEEP
EN
PH
SH2
AVDD/DVDD
Description
0
X
X
High-Z
Disabled
Sleep mode; disabled High-Z
1
0
X
L
Enabled
Brake, low-side slow decay
1
1
0
H
Enabled
Drive (Current SH2
→ GND)
1
1
1
Invalid state
For the DRV8701P, Table 4 gives the control scheme. IN1 = 1 and IN2 = 0 is an invalid state.
Table 4. DRV8701P (PWM) Control Interface for Half-H Bridge Mode
nSLEEP
IN1
IN2
SH2
AVDD/DVDD
Description
0
X
X
High-Z
Disabled
Sleep mode; disabled High-Z
1
0
0
High-Z
Enabled
Coast; disabled High-Z
1
0
1
H
Enabled
Drive (current SH2
→ GND)
1
1
0
Invalid state
1
1
1
L
Enabled
Brake; low-side slow decay
Copyright © 2015, Texas Instruments Incorporated
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Product Folder Links: DRV8701




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