What are the tips for choosing dcdc power modules

Choose to usedcdc module power supplyIn addition to the basic voltage conversion function, the following aspects need to be considered:

1. Rated power

Generally, it is recommended that the actual power used is 30-80% of the rated power of the module power supply (the specific ratio is also related to other factors, which will be mentioned later.). All aspects of the module power supply performance within this power range are fully and stable. reliable. Too light load causes waste of resources, and too heavy load is detrimental to temperature rise and reliability. All module power supplies have a certain overload capacity, for example, the company's products can reach 110-120%, but it is still not recommended to work under overload conditions for a long time, after all, this is a short-term emergency measure.

2. Operating temperature:

General temperature operation can be divided into commercial regulations (0℃~+60℃), industrial regulations (-25℃~+71℃), military regulations (-55℃~+85℃), etc. When selecting DC/DC power modules, Consider the actual operating temperature range of the system and select an appropriate temperature level.

Different temperature levels will affect the material design and selection of the power module. Choosing a suitable temperature level is a very important consideration. This will affect the stability and reliability of the dcdc power module. If the system operating temperature exceeds dcdc The use range of the power module, severe cases will cause the module to fail, if the product is operated at the limit of the temperature range, it needs to be used under reduced load, or appropriate heat dissipation design, such as increasing the convection wind speed or increasing the heat sink to ensure the stability of the product;

3. Input voltage:

The input voltage refers to the normal operation range of the dcdc power module. Generally, the common power system is usually divided into 5V, 12V, 24V, and 48V. When the power module input voltage range is selected, depending on the input voltage range, the industry has double voltage Input and quadruple voltage input are selectable.

When selecting the input voltage, you need to pay attention to the voltage provided by the front-end power supply and whether its variation is within the operating voltage range of the dcdc power supply module. Therefore, if you choose a power supply module with double voltage input or quadruple voltage input, you can see the front-end power supply. Depending on the voltage fluctuation and stability. If the input voltage is too high or too low, it may cause abnormal operation or damage of the dcdc power module. This point must be paid special attention.