Output derating curve

What is Output Power Derating?

All power supplies have a specified “Operating temperature range”. For example, a particular 500W switching power supply has an operating temperature range from “-20°C to +70°C”. However, the specification may also state “Output derating linearly above +50°C”. So what does this mean? Most power supply manufacturers provide output derating curve (see figure below) to make…

Open Frame Power Supplies

Cooling Methods for Open Frame Power Supply

In an ideal world all the energy input to a power supply would be converted to useable electrical output power. Unfortunately real life systems incur losses and like all other types of power supplies, open frame power supplies generate heat which has to be dissipated during system operation. Key components that contribute to such losses…

Mini Redundant Power Supply 550W MVP-G550VP, Mini Redundant Power Supply 500W MVP-G500VP

The Future of Redundant Power Supplies: PMBus

There are many potential benefits that a 100% digitally controlled redundant power supply can offer, including improved efficiency, reliability, and flexibility, so it may seem strange that the majority of power supplies in the market today function using controllers that communicate based on many basic analog protocols. This however, is primarily due to the lack…