User Manual

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Revision 1.6

2019-07-16

EVAL-M3-102T User Manual

iMOTION™ Modular Application Design Kit

Hardware description of EVAL-M3-102T

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

Figure 13 depicts IU+ current feedback sensing circuity on EVAL-M3-102T evaluation board. Please note that the

default external amplification gain is less than 1 for current sense in this evaluation board.

Figure 13 The part of Current feedback on the EVAL-M3-102T evaluation board

Based on the principle of Kirchhoff's voltage law,

= + =56

Based on this calculation, the current input for the MADK combination of EVAL-M3-102T and EVAL-M3-CM615PN

is 25 mV/A, and for the combination of EVAL-M3-102T and EVAL-M3-TS6-606 it is 83.3 mV/A. Please use same

procedure to calculate the current input for other combinations of MADK boards and enter it into MCEWizard.

R12

100ohm 1/10W 1%

R13

2Kohm 1/10W 1%

R10

10Kohm 1/10W 1%

C21

220pF

+3.3V

IU+

Rsh

Ish

iMOTION

Controller

IU

18

V1

V2

Current shunt resistor

on power board