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AN1794 Datasheet(PDF) 23 Page - STMicroelectronics

Part # AN1794
Description  PractiSPIN evaluation system configuration and set up guide
PDF  34 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN1794 Datasheet(HTML) 23 Page - STMicroelectronics

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AN1794
EVAL6207N board configuration
23/34
9.1
Vref offset adjustment (R18)
Using a voltmeter monitor the voltage at the VrefA or VrefB test point on the EVAL6207N
board with respect to GND (CN1) when calibrating the offset.
9.2
Current scaling
When potentiometers R20 and R26 are 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 2.64 A.
The peak current can be set to a lower value by adjusting R15 and R18. The reference
voltage inputs can be monitored at the VrefA or VrefB test point.



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