The choice of DCDC chip needs to consider many factors, such as input voltage, output voltage, output current, efficiency, size, cost and so on.
To choose the right chip according to the specific application, if there are high-end application needs, you can choose a high-efficiency chip, if the design has space constraints, you need to choose a small size chip, while taking into account cost and performance. It is also necessary to pay attention to confirm the safety of the chip, including overcurrent, overvoltage, short circuit and other protection mechanisms. You can help by referring to the manufacturer's data books, specifications, and evaluation boards.