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DRV8823 Datasheet(数据表) 7 Page - Texas Instruments

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部件型号  DRV8823
说明  4-BRIDGE SERIAL INTERFACE MOTOR DRIVER
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制造商  TI1 [Texas Instruments]
网页  http://www.ti.com
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DRV8823 Datasheet(HTML) 7 Page - Texas Instruments

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A OU T 1
A OU T2
BOU T1
B OU T2
Step
Motor
VM
VM
ISEN A
ISEN B
APH A SE
Pre-
driv e
Pre-
driv e
VC P, VGD
VM
VM
+
-
PW M
V CP, VGD
+
-
PW M
A BVR EF
OC P
OC P
OC P
OC P
A BD EC A Y
B EN BL
DAC
DAC
A = 5
A = 5
A I[2:0]
B I[2:0]
3
3
AEN B L
BPH A SE
A I[2:0]
3
From Serial Interface
DRV8823
www.ti.com
SLVS913D – JANUARY 2009 – REVISED JANUARY 2010
FUNCTIONAL DESCRIPTION
PWM Motor Drivers
The DRV8823 contains four H-bridge motor drivers with current-control PWM circuitry. A block diagram showing
drivers A and B of the motor control circuitry (as typically used to drive a bipolar stepper motor) is shown below.
Drivers C and D are the same as A and B (though the rds(on) of the output FETs is different).
Figure 2. Block Diagram
Note that there are multiple VM motor power supply pins. All VM pins must be connected together to the motor
supply voltage.
Copyright © 2009–2010, Texas Instruments Incorporated
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Product Folder Link(s): DRV8823




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