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Two Shunt Resistors

Question asked by lee.sang_ho on Sep 27, 2012
Latest reply on Nov 12, 2012 by Billino
Hello. I'm trying to develop bldc motor driver with referecing MClib.

My question is why the current is sensed with three shunt resistor? 
The document,UM1052 descibed as the current sensing is sufficient sample only two currents.

Is it possible to use two shunt resistors, for Ia and Ib, with MClib?