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User Manual

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Revision 1.4

2020-07-16

EVAL-M3-IM564 User Manual

iMOTION™ Modular Application Design Kit

Hardware description of EVAL-M3-IM564

188 or IRMCF188, power board EVAL-M3-IM564 should be modified by assembling 1 MΩ AC voltage sensing

resistors R2A and R10A and removing the resistors R2 and R10.

4.1.3

PFC external current feedback configuration and calculation

The PFC shunt resistor RS3 is 5 mΩ for EVAL-M3-IM564. But for control board 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 14.

Figure 14 PFC current shunt feedback and sample timing

Figure 15 depicts PFC current feedback-sensing circuitry on the 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 15 The PFC current feedback circuit for EVAL-M3-102T evaluation board

= + =12

Based on this calculation, the PFC current measurement input scaling of EVAL-M3-IM564 is 120 mV/A. Please

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

MCEWizard.

IPFC

R25 change to 0 ohm

Delete R6

EVAL-M3-IM564

EVAL-M3-102T

BAV20WS-TP Arkusz danych(PDF) 22 Page - Infineon Technologies AG