The BUCK type is a BUCK type DC-DC, while BOOST is a boost type DC-DC. The basic principle of the Buck type is that the power supply supplies power to the load through an inductor, while the inductor stores a portion of the energy, and then the power supply is disconnected and only the inductor supplies power to the load. Such periodic work, by adjusting the relative time of power on, to achieve the adjustment of the output voltage. The basic principle of BOOST type: the power supply first stores energy to the inductor, and then, the stored inductor is used as a power supply, and the original power supply is connected in series, thereby increasing the output voltage. Such a periodic repetition.
The Boost type DC-DC booster is a common DC-DC booster circuit that uses components such as inductors, switching tubes and diodes to increase the input voltage and the output voltage. The principle is to control the current in the inductor through a switching tube, convert the input voltage to a pulse voltage higher than the input voltage, and output after filtering. The circuit has the characteristics of simple, efficient and stable, and is widely used in electronic equipment, solar panels, LED lighting and other fields.