5 Pcs Mini Dc-dc Buck Converter Step Down Module 1.3a Adjustable Step-down Conversion 12v 24v To 5v 3.3v 9v - Integrated Circuits - AliExpress
Amazon.com: Songhe Mini360 Mini 360 3A DC-DC Voltage Step Down Power Converter Buck Module RC Airplane Power Step-Down Module 10pcs : Electronics
5v Regulator, 5pcs Mini Voltage Reducer DC 4.5-24V 12V 24V Step Down to 5V Buck Converter Board 3A Volt Step-Down Transformer Power Supply Module - Ideal Supply Inc (dba Ideal Blasting Supply)
MINI DC-DC BUCK CONVERTER STEP-DOWN POWER MODULE OUTPUT 0.8V-20V
Step Down Power Supply Module Mini DC-DC 12-24V To 5V 3A Voltage Buck Converter | eBay