AN 669: Drive-On-Chip Design Example for Cyclone V Devices

ID 683466
Date 5/15/2022
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7. About the Scaling of Feedback Signals

Voltage, current, and position feedback signals from the hardware require scaling into the appropriate physical units before you can use the data in the control loop

The Drive-On-Chip Design Example for Intel Cyclone V devices requires scaling to convert the feedback samples from sigma-delta into the same units for use in the FOC algorithm. Also, the design requires scaling to convert current and voltage feedback values to the units expected by the DC-DC module. The design processes some feedback as dimensionless data and scales it into a convenient range (e.g. signed 16-bit integer) for use in the control loop.