Hi Alihan Çalışkan,
What's the sample code you are using?
Do you try the newest SDK code for the KV58?
SDK_2.8.0_TWR-KV58F220M\boards\twrkv58f220m\demo_apps\mc_bldc
Please also give me one photo about your connections on your side, I need to check it.
Do you do it like this :

Do you mean, when you use the external power to power the board, the KV58 board didn't power on? Do you addthe related usb to the KV58?
Wish it helps you!
If you still have questions about it, please kindly let me know.
Best Regards,
Kerry
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