User Guide
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Revision 1.0
2020-05-22
EVAL-M3-302F User Guide
iMOTION™ Modular Application Design Kit
Hardware description of EVAL-M3-302F
6
Hardware description of EVAL-M3-302F
This chapter covers the hardware design of the EVAL-M3-302F in more detail. To enable users to make the EVAL-
M3-302F evaluation board a basis for a new development or modification of their own systems, all necessary
technical data such as schematics, layout and components are also included in this chapter.
6.1
Motor current feedback circuitry
6.1.1
Motor shunt configuration
Both single shunt and leg shunt topologies are supported by the EVAL-M3-302F control board. The user needs
to ensure that the shunt configuration matches the power board hardware configuration. Please refer to the
power board User Guide for details. The shunt configuration can be changed in MCEWizard by clicking and
selecting in the pull-down list marked with a red box as shown in Figure 11.
Figure 11
Shunt configuration
6.1.2
Motor external current feedback configuration and calculation
The shunt resistance R
sh
value can be found in the schematics or User Guide for the power board (for example,
the leg shunt resistors are 30 mΩ for EVAL-M3-CM615PN and 100 mΩ for EVAL-M3-TS6-606).
