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AN1794 Folha de dados(PDF) 32 Page - STMicroelectronics

Nome de Peças AN1794
Descrição Electrónicos  PractiSPIN evaluation system configuration and set up guide
PDF  34 Pages
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN1794 Folha de dados(HTML) 32 Page - STMicroelectronics

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EVAL6235 board configuration
AN1794
32/34
12.1
Vref offset adjustment (R18)
Using a voltmeter monitor the voltage at the junction of R17 and R20 on the EVAL6235N
board with respect to GND (CN1) when calibrating the offset.
12.2
Current scaling
When potentiometer R22 is set full clockwise, a 100% current setting on the practiSPIN
software screen corresponds to a Vref of approximately 0.88 Vdc or a peak motor current of
about 4.4 A. The peak current can be set to a lower value by adjusting R22. The reference
voltage inputs can be monitored at the junction of R17 and R20.



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