A3988 Просмотр технического описания (PDF) - Allegro MicroSystems
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производитель
A3988 Datasheet PDF : 13 Pages
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A3988
Quad DMOS Full Bridge PWM Motor Driver
Functional Block Diagram
0.1 μF
50 V
VDD
OSC
PHASE1
I01
I11
PHASE2
I02
I12
VREF1
Sense1
3
VREF2
3
Sense2
PHASE3
I03
I13
PHASE4
I04
I14
Sense3
VREF3
3
VREF4
3
Sense4
CHARGE PUMP
Control Logic
Bridges 1 and 2
PWM Latch
BLANKING
PWM Latch
BLANKING
Control Logic
Bridges 3 and 4
PWM Latch
BLANKING
PWM Latch
BLANKING
0.1 μF
50 V
DMOS
VBB1
FULL-BRIDGE 1
VCP
100 μF
50 V
OUT1A
OUT1B
0.22 μF
50 V
To
VBB2
GATE
DRIVE
DMOS
VBB1
FULL-BRIDGE 2
SENSE1
OUT2A
OUT2B
VCP
GATE
DRIVE
Sense2
SENSE2
DMOS
FULL-BRIDGE 3
VBB2
OUT3A
OUT3B
Sense3
SENSE3
VBB2
DMOS
FULL-BRIDGE 4
Sense4
OUT4A
OUT4B
SENSE4
Allegro MicroSystems, Inc.
3
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
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