Amazon.com: D-Planet [4-Pack] 5A DC-DC Adjustable Buck Converter 4~38v to 1.25-36v Step Down Power Supply High Efficiency Voltage Regulator Module : Electronics
Mini Dc-dc 12-24v To 5v 3a Step Down Power Supply Module Voltage Buck Converter Adjustable 97.5% 1.8v 2.5v 3.3v 5v 9v 12v - Integrated Circuits - AliExpress
DC DC Power Modules | MPS | Monolithic Power Systems
Amazon.com: [2-Pack] Adjustable DC-DC Buck Boost Converter Automatic Wide Voltage Regulator XL6009 DC to DC 5-32 V to 1.25-35 V Voltage Module : Electronics