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3977 Folha de dados(PDF) 14 Page - Allegro MicroSystems

Nome de Peças 3977
Descrição Electrónicos  MICROSTEPPING DMOS DRIVER WITH TRANSLATOR
PDF  18 Pages
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Fabricante Electrônico  ALLEGRO [Allegro MicroSystems]
Página de início  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems

3977 Folha de dados(HTML) 14 Page - Allegro MicroSystems

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115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
3977
MICROSTEPPING DMOS DRIVER
WITH TRANSLATOR
14
Dwg. WK-004-12
PHASE 2
CURRENT
100%
–100%
SLOW
DECAY
MIXED
DECAY
SLOW
DECAY
MIXED
DECAY
PHASE 1
CURRENT
SLOW
DECAY
MIXED
DECAY
SLOW
DECAY
MIXED
DECAY
STEP
INPUT
HOME
OUTPUT
100%
–100%
70.7%
38.3%
–70.7%
–38.3%
70.7%
38.3%
–70.7%
–38.3%
8 Microstep/Step Operation
MS1 = MS2 = H, DIR = H
The mixed-decay mode is controlled by the percent fast
decay voltage (VPFD). If the voltage at the PFD input is
greater than 0.6VDD then slow-decay mode is selected. If
the voltage on the PFD input is less than 0.21VDD then
fast-decay mode is selected. Mixed decay is between
these two levels.



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