1.5.2.3.3
DC current
An isolated sensor measures the DC output current. Hall sensors are taken into consideration. A conditioning
circuit allows obtaining the correct value for the ADCs.
Figure 13.
DC current sensing block diagram
1.5.2.3.4
DC voltage
The DC voltages are obtained using two-stage sensing. The total DC bus voltage is split exploiting two voltage
dividers. Both voltages are needed to obtain the monitoring of each capacitor to avoid overvoltage, offering
independent DC voltages for the control.
UM2979
Reference design description
UM2979
-
Rev 1
page 9/70
