AnsweredAssumed Answered

current measurement in the FMCMOTCON2 reference design

Question asked by qxj on Jan 13, 2016
Latest reply on Jan 14, 2016 by qxj

Hi guys,


I'm using the AD-FMCMOTCON2-EBZ reference design to build my motor control algorithm. Now I want to get the actual values of the phase currents Ia and Ib.


In the AD-FMCMOTCON2-EBZ kit the phase current is senced by a sigma-delta-modulator AD7403, which exports a single-bit data stream to a SINC3 filter. This filter will reconstruct the actual current measurement.


Could anybody tell me whether the signals of these two output ports "ia_o" and "ib_o" in the reference design are the actual current measurement values, i.e. the output signals of SINC3 filter?

The design block is shown as follow: