MP5423 | 100V Power Management IC with 300mA Buck Converter and Two LDOs | MPS
Dc-dc 5v Mini Buck Step Down Board Fixed Output 3a Converter Buck Circuit Board Module Adjustable Voltage Regulator Power Supply - Voltage Regulators/stabilizers - AliExpress
7805 replacement" modular buck converter
50V to 5V @7A Synchronous Buck (Step-down) Converter - Electronics-Lab.com