Without active load sharing each power supply must be adjusted so that their output voltages are identical, they much be maintained at the same ambient temperature and the wiring between each power supply and the common point should be of equal lengths – all difficult conditions to maintain. If three supplies are used each one delivers a third of the total current required. If two supplies are used each one will deliver half the required current. This involves the power supplies communicating with each other and adjusting their output voltages so that each supply delivers the same current. Redundant power supplies can be also be used for increased current capacity – in this case the concern is less about unplanned shutdowns but rather the fact one supply cannot deliver the load current required.įor increased current capacity power supplies with “active load sharing” are preferred. power supplies with their outputs connected in parallel, where if one supply fails there are enough remaining power supplies to deliver the required load current. To prevent unplanned shutdowns users often use redundant power supplies, i.e. Power supply failure can lead to a process shutting down resulting in considerable lost revenue. The Diode module can be used to 100% decouple two power supplies of the same type, which are connected in parallel on the output side to increase power or provide redundancy.ĭiode protection for a DC power supply is a critical piece of a control system.
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