Dc Bus Measurement And Mcewizard Configuration - Infineon EVAL-M1-IM818-A User Manual

EVAL-M1-IM818-A user guide
Evaluation power board with MADK M1 connector
System and functional description
2.6.1

DC bus Measurement and MCEWizard configuration

Pin 14 of connector J3 provides access to the DC-link voltage. Three possible feedback cases are associated
with this pin. Figure 10 provides the DC bus sense resistor details. By default, the resistor R8 is mounted on
EVAL-M1-IM818-A.
DC bus sense resistor on EVAL-M1-IM818-A evaluation board
Figure 10
The pull-down resistor R8 of 1 MΩ referred to ground is inserted on the EVAL-M1-IM818-A evaluation board to
prevent the high BUS voltage +BUS directly connecting to the connector J3. And a pull-down resistor of 13.3 kΩ
for EVAL-M1-101T or 4.87 kΩ for EVAL-M1-183M must be inserted on the control board, and then the DCBSENSE
voltage results in the range of 0 to 3.3 V on the pin reflecting a DC bus voltage range of 0 to 800 V.
DC bus sensing configuration in MCEWizard
Figure 11
User guide 17 of 35 Revision 1.4
2021-09-10