Hi, Lili
I suggest you use MC56F84xxx or MC56F83xxx for example MC56F84789, which has 2 eFlexPWM modules, 2 quadTimer modules.
The tools for DSC is CodeWarrior for mcu ver11.x, this is the link:
https://www.nxp.com/design/software/development-software/codewarrior-development-tools/codewarrior-l...
The debug device is USBTAP, this is the link:
https://www.nxp.com/design/software/development-software/codewarrior-development-tools/run-control-d...
You can order the EVM board for MC56F84xxx, the link is:
https://www.nxp.com/part/TWR-56F8400-KIT
The power stage board is:
https://www.nxp.com/design/development-boards/tower-development-boards/peripheral-modules/low-voltag...
For the encoder, pls refer to an4813.pdf:
https://www.nxp.com/design/development-boards/tower-development-boards/peripheral-modules/low-voltag...
The KV family is an option, the FTM modules can generate PWM signal and function as decoder for example KV11, KV31.
BR
XiangJun Rong