EVAL6207N Datasheet, PDF (26/34 Pages) STMicroelectronics – PractiSPIN evaluation system configuration and set up guide

EVAL6208N board configuration
AN1794
10.1
Vref offset adjustment (R18)
Using a voltmeter monitor the voltage at the VrefA or VrefB test point on the EVAL6208N
board with respect to GND (CN1) when calibrating the offset.
10.2
Current scaling
When potentiometers R20 and R21 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
After tube recognition the microcontroller will set the right run frequency for the connected
lamp.
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