Insufficient parallel power supply capacity of AC DC base station power supply

Why should a system designer consider paralleling DC power supplies?

There are a variety of reasons why a system designer may want to consider paralleling of DC power supplies. Some of these are related to the bill of materials and logistics issues, others are focused on satisfying system current, performance or reliability objectives.

What is a parallel power supply?

Parallel power supplies refer to a configuration where multiple DC power supplies are connected in parallel to increase total output current. Each power supply shares the current load, ensuring that no single unit is overloaded. Higher Current Output – Allows for increased power delivery by combining the output of multiple units.

Can two power supplies be wired in parallel?

Two Power Supplies can be wired in parallel even though each has a sufficient power rating. This can be done to ensure (back up) Power Supply even if one of the Power Supplies fails. (Backup operation is possible for all Power Supplies with single outputs.) Select the Power Supplies A and B so that either has a sufficient power rating for the load.

What happens if a power supply is not balanced?

Unless measures are taken to balance the load, a supply could shut down due to reaching its maximum current limit before the required current is delivered to the load. What’s more, if the paralleled power supplies are not sharing their contribution equally, one supply will be subjected to more stress than the others, shortening its life expectancy.

Do power supplies need to have similar output characteristics?

It should be noted that when power supplies are configured with the outputs connected in series, the supplies do not need to have similar output characteristics. The load current will be limited to the lowest load current capability of any of the supplies in the configuration.

Can a 10000 power supply be used in parallel?

While the above is true for many power supplies, EA's 10000 series products allow the user to combine different power levels in parallel. The only requirements are that they must have the same voltage rating, and they must be the same family. Examples are pairing PSB with PSBE or PUB and PSI with PS or PU.