Sample code for the application note -AN5978

[sudong]

Where can I find a copy of the source code?

Introduction to MB1971 LLC HAT 12 V to 7.5 V/1 A for F334 G474 Nucleo board - Application note

[Chris21]

The document at the link you supplied says:

Before opening the STM32CubeMX ‘ioc’ file, make sure that the X-CUBE-DPOWER pack has been installed.
• Download the pack at https://www.st.com/en/embedded-software/x-cube-dpower.html
• Open the help tab and install the pack.

.

.

.

Once the pack has been installed, it is possible to check, change, modify the default workspace, and generate the
code for the IAR, Keil® or STM32CubeIDE compiler toolchains using the tab GENERATE CODE in the main
interface.