PAH350S4828

DC-DC Converters

DC-DC converters are electrical circuits that convert one DC voltage level to another. PAH350S4828 is a high-efficiency 48V to 28V DC/DC converter, operating from 250 to 360V DC input. Its design enables it to adapt to various environments, making it ideal for a wide range of applications in some of the most demanding industries.

DC-DC Converters are widely used in automotive, telecommunications, computer, medical, industrial automation, military/aerospace, and power supply applications. They are usually implemented when the power system requires interoperability or isolation between voltage levels. Common types of DC-DC converters include buck, boost, buck-boost, cuk, and push-pull, as well as other, more complex topologies.

PAH350S4828 Application Field and Working Principle

PAH350S4828 is a high-efficiency DC/DC converter, designed to convert a wide range of input voltage from 250 to 360V DC into a 28V output voltage. Its 14.5A output current makes it ideal for use as a 48V system bus supply, providing the necessary power to run high-end and low-power components.

The PAH350S4828 offers a high level of efficiency, with a typical efficiency of 98%. Moreover, it has an operational temperature range of -40°C to 125°C, making it well-suited for use in harsh industrial and military/aerospace applications. The converter’s high power density also Lowers cooling system costs and increases system reliability.

The operating principle of PAH350S4828 is based on the buck-boost converter topology. This type of converter utilizes two switches that are connected to the output of the inductor. The circuit then charges and discharges the inductor, producing a regulated output voltage.During operation, the PAH350S4828 switches between boost and buck topology to provide a regulated 28V output voltage. In the boost topology, the converter utilizes the input voltage to increase the output voltage. The buck topology is used to reduce the output voltage from the input voltage. With these two topologies combined, the converter is able to maintain a regulated output voltage.

To further increase its efficiency, the PAH350S4828 also incorporates Burst Mode operation, which is a type of adaptive on-time control. This feature varies the on-time of the converter, depending on the load. During light load conditions, the converter switches at a reduced rate, resulting in reduced power losses and improved efficiency.

In addition, the converter provides enhanced protection features, such as short-circuit, over-temperature, and over-voltage protection. These features act as a failsafe for system operation and ensure reliability.

Overall, the PAH350S4828 provides exceptional performance in harsh and demanding applications. With its high efficiency, high power density, and wide temperature range, this converter is ideal for 48V system applications.