A DC-DC converter is an electronic circuit that converts a DC voltage or current level to another DC voltage or current level. In most cases, the device uses only one power supply.
If different subcircuits require different voltages to work properly, it is necessary to convert the input voltage to a lower or higher level, which can be done by a dc-to-dc converter.
In addition to converting the voltage, the DC-DC converter can be used to stabilize the voltage without causing the voltage to drop or rise too much. For example, one of the uses of automotive DC-DC converters is to regulate voltage fluctuations in automotive alternators.
