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DRV8426PWPR Scheda tecnica(PDF) 12 Page - Texas Instruments

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Il numero della parte DRV8426PWPR
Spiegazioni elettronici  DRV8426 Stepper Driver With Integrated Current Sense, 1/256 Microstepping, STEP/DIR Interface and smart tune Technology
PDF  49 Pages
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Produttore elettronici  TI1 [Texas Instruments]
Homepage  http://www.ti.com
Logo TI1 - Texas Instruments

DRV8426PWPR Scheda tecnica(HTML) 12 Page - Texas Instruments

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DRV8426
SLOSE55 – MAY 2020
www.ti.com
Product Folder Links: DRV8426
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Copyright © 2020, Texas Instruments Incorporated
7.3.2 PWM Motor Drivers
The DRV8426 device has drivers for two full H-bridges to drive the two windings of a bipolar stepper motor.
Figure 4 shows a block diagram of the circuitry.
Figure 4. PWM Motor Driver Block Diagram
7.3.3 Microstepping Indexer
Built-in indexer logic in the DRV8426 device allows a number of different step modes. The M0 and M1 pins are
used to configure the step mode as shown in Table 4. The settings can be changed on the fly.
Table 4. Microstepping Indexer Settings
MODE0
MODE1
STEP MODE
0
0
Full step (2-phase excitation) with 100%
current
0
330k
Ω to
GND
Full step (2-phase excitation) with 71% current
1
0
Non-circular 1/2 step
Hi-Z
0
1/2 step
0
1
1/4 step



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