Industrial Isolated DC-DC Buck Converter (9~18V to 5V 10A)

Jargon buster

Plain-language definitions for the technical terms used above.

Buck converter

A power circuit that reduces a higher DC voltage to a lower DC voltage. It is useful when your supply voltage is too high for a module or microcontroller and you want less heat and better efficiency than a simple linear regulator.

DC

DC means direct current, where electricity flows in one constant direction, as supplied by batteries, USB ports and many plug-pack power supplies. When a product specifies DC, it runs from a DC supply rather than mains AC, so you need to provide the correct voltage and polarity.

GND

GND is the ground or reference connection (0 V) for a circuit. When connecting two devices together, their grounds must be joined so both agree on what counts as a low or high signal.

Leakage current

Leakage current is a small unwanted current that flows through insulation, components, or semiconductor inputs even when ideally no current should flow. Very high-value resistors can be used to detect or limit these tiny currents in sensitive circuits.

under-voltage protection

Under-voltage protection turns off or limits operation when the supply voltage drops too low. This helps prevent unstable behaviour and can protect batteries or connected electronics from being used outside their safe range.