Pololu 3.3V Step-Up/Step-Down Voltage Regulator S7V8F3
Daygreen 24V to 12V 80A 960W Power Buck Module Car Step Down DC DC Converter Voltage Regulator Reducer, Non-Isolated : Electronics - Amazon.com
Buck converter - Wikipedia
Buck converter - Wikipedia
Buck-Boost Converter: What is it? (Formula and Circuit Diagram) | Electrical4U
DC-DC Buck Step-down 4-38V to 3.3V 6V 9V 12V 24V 5A Converter Voltage Regulator | eBay
Dc 9v 12v 24v 36v 48v 72v 84v 120v To 5v 3a Step Down Module Power Supply Dc Dc Converter Buck Converter Step Up Converte - Inverters & Converters - AliExpress