Basic step-down (buck) converter.

DC to DC Step Down Buck Converter Power Supply Module 4V-38V to 1.25V-36V 5A Adjustable Voltmeter

DC Buck Converter Step Down DC to DC Converter 12V 24V 7-36V to 1.25-32V 12V 5V Volt Reducer Board Board Voltage Regulator Power Supply Module with LED Display USB Output & CC

LM2596 3A Step-Down Converter

Xpelair DC-DC Step Down Buck Converter Adjustable Power Supply

Buy DC-DC LM2596 Buck Converter Step down Module Online

DC-DC Adjustable Step-down Buck Converter XL4015 5A - with Current Limiter - XL4015CC

LM2596 3A Step-Down Converter

DC-DC 6~100V to 5/9/12/24V 2A Step Down Voltage Regulator Buck Converter Module

LM2596 DC-DC Buck Converter Step-Down Power Module - Senith Electronics

DIY DC to DC Buck Converter (Step Down)

DC-DC Buck Converter - Mini 360 • Make Electronics

9A Buck Step Down XL4016 300W Step Down Buck in Pakistan