User Manual

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Revision 1.6

2018-11-27

EVAL-M1-101T User Manual

iMOTION™ Modular Application Design Kit

Hardware description of EVAL-M1-101T

5

Hardware description of EVAL-M1-101T

This chapter covers hardware design of the EVAL-M1-101T in more details. To enable users to make the EVAL-

M1-101T evaluation board a basis for a new development or modification of their own systems, all necessary

technical data like schematics, layout and components are also included in this chapter.

5.1

Current feedback circuitry

5.1.1

Shunt configuration

Both single shunt and leg shunt topologies are supported by the EVAL-M1-101T control board. The user needs

to make sure that the shunt configuration matches with power board hardware configuration. Please refer to

the power board Application Note for details. The shunt configuration can be changed in MCEWizard by clicking

and selecting in the pull down list marked with red box as shown in Figure 11.

Figure 11

Shunt Configuration

5.1.2

External Current feedback configuration and calculation

example, the leg shunt resistors are 100mΩ for EVAL-M1-CM610N3 and 250mΩ for EVAL-M1-05-65D).

The current input value is product of the shunt resistance in milliohms and gain of External current sense

amplifier as shown in Figure 12.

Figure 12

Current shunt feedback and sample timing