Usually based on the TSUMV56RUU or similar MSTAR chipset.

Increases the base 12V voltage to the level required by the LED strips.

Use the schematic’s component layout mapping to locate parts on the physical board. For example, if the diagram points to C12 as a decoupling capacitor on the 1.2V rail, match that designation printed on the silkscreen of your board.

Typically generates stable +12V and +5V rails to power the main board, alongside a higher voltage rail for the LED driver. 2. DC-to-DC Converter & Regulator Section