Infineon iMOTION EVAL-M7-D111T, User Manual, Page: 15 / 25

User guide 15 of 24 V1.0
2021-04-15
EVAL-M7-D111T user guide
iMOTION™ evaluation board for smart driver
System and functional description
Table 7 iMOTION
TM
link connector-J3
Pin Number Symbol Assignment
1 TXD1 Serial port 1, transmit output
2 RXD1 Serial port 1, receive input
3 VDD 5 V power supply
4 GND Ground
5 GND Ground
6 VDD 5 V power supply
7 RXD0 Serial port 0, receive input
8 TXD0 Serial port 0, transmit output
Table 8 Digital hall feedback & GPIO connector-J4
Pin Number Symbol Assignment
1 DH1 Digital hall sensor input 1
2 DH2 Digital hall sensor input 2
3 DH3 Digital hall sensor input 3
4 GPIO9 Digital I/O
5 GPIO10 Digital I/O
Table 9 Analog position feedback & analog signal input connector-J5
Pin Number Symbol Assignment
1 AHU+ Analog Hall element input 1 (+)
2 AHU- Analog Hall element input 1 (-)
3 AHV+ Analog Hall element input 2 (+)
4 AHV- Analog Hall element input 2 (-)
5 AIN10 Analog signal input
6 AIN11 Analog signal input
2.2.2 Current feedback circuitry
2.2.2.1 Shunt configuration and current sampling
For the IMD111T, there are two options of current feedback circuitry. One is the single-shunt current feedback
configuration. The other is the leg-shunt current feedback configuration. Single shunt is the default setting for
current feedback on the EVAL-M7-D111T board. If users want to use leg-shunt configuration, please refer to the
selection table in the schematics for the details.
Figure 10 depicts the block diagram of the current feedback offset and gain. The current input scaling is a key
parameter value that needs to be calculated and entered into MCEWizard. This parameter is the gain of the
external current single/leg-shunt measurement circuit. The value is the product of the shunt resistance in
milliohms, and the AC gain of the offset and gains circuit. The calculation equation is as follows:
𝐶𝑢𝑟𝑟𝑒𝑛𝑡 𝑖𝑛𝑝𝑢𝑡 𝑠𝑐𝑎𝑙𝑖𝑛𝑔 = 𝐺
𝑒𝑥𝑡
× 𝑅𝑠