What is the classification of DC-DC converters?

DC-DC converters have different categories corresponding to different needs. Understanding the classification of DC-DC converters is a prerequisite for further application. In this article, we will talk about the classification of DC-DC converters and what is the isolated DC-DC converters.

Here is the content list:

• What is the classification of DC-DC converter?

• What does an isolated DC-DC converter look like?

What is the classification of DC-DC converter?

Today's DC-DC converter applications fall into different categories: isolated and non-isolated, boost and buck, or both. The market also offers modules with specific power levels and features, many of which have become general "commercial" components. What "isolated" means: A component is non-isolated if there is an electrical connection (usually ground) between the input and output. Isolated components have an internal transformer that magnetically transfers energy between the input and output, so the output can "float" concerning the input.

What does an isolated DC-DC converter look like?

Isolation may be required for a variety of different reasons. It is often convenient to separate the input and output grounds so that the current paths are separated and do not interact with each other. A common application is to power a circuit for an RS485 interface, where the isolated power rails for the driver can stop the flow of current between the host ground and the connected device.

An important reason for isolation is usually the need for safety. You might think that if a DC-DC converter has low input and output voltages, safety is not an issue. However, the isolation layer in a DC-DC is often used as part of a broader isolation system to achieve an overall safety rating.

Isolated DC-DC converters come in a variety of forms, with the simplest low-power types usually having no regulation, but simply "proportional" converters, where the output varies proportionally with the input. These components are low-cost and can be used to provide a "point" voltage for an interface or analog circuit. However, since their no-load output voltage can be much higher than rated, they usually have minimum load requirements. These components are highly efficient at rated load, but much less efficient at light load, perhaps even below 50%.

DC-DC converters with active regulation can withstand input and load variations while maintaining tight output voltage regulation. 2:1 input variations used to be a standard, such as 18-36V, but components are now available for a wider range of 5:1 inputs and even larger.

Different categories of DC-DC converters have different application requirements, such as the safety requirements of isolated DC-DC converters. In more than a decade of power supply and sensor research and development. We always adhere to the purpose of "customer first, the brand first, technology to improve life" and the commitment of "quality, integrity, the best service, the latest technology", and are committed to wholehearted service, providing quality products, meeting diversified customer needs, and meeting Diversified market demand. If you have relevant needs, welcome to visit our official website: https://www.smunchina.com. for consultation and understanding. Thank you very much for your support.