Precautions when choosing a conversion scheme for dcdc power modules

dcdc power moduleThe circuit is also called a DC/DC conversion circuit, and its main function is to convert input and output voltages. Generally, we call the voltage conversion process where the input power supply voltage is within 72V as DC/DC conversion. Common power supplies are mainly divided into automotive and communication series and general industrial and consumer series. The voltage used by the former is generally 48V, 36V, 24V, etc., while the voltage used by the latter is generally below 24V.

The commonly used design schemes of three circuit modes of dcdc power supply module: Zener tube voltage regulator, linear analog voltage regulator, and DCDC switch-type voltage regulator. However, the following points should be paid attention to when choosing which conversion plan to review.

1. If it is a voltage regulator circuit, it cannot be used as a power supply, and only used for power supply for chips that do not have power requirements.

2. The circuit structure of the linear voltage stabilizer circuit is relatively simple, but because its conversion efficiency is very low, it can only be applied to those low-power stabilized power supplies.

3. Compared with the above two types, the switching-type voltage stabilizing circuit conversion has higher conversion efficiency and can be applied to the dcdc power supply module in high-power places, but because its circuit structure is more complicated, especially those high-power circuits , Is not conducive to miniaturization.

Therefore, when choosing a conversion scheme for a dcdc power module, it is necessary to select the appropriate scheme with these three modes, so that it can be used normally and reduce the occurrence of failures.