AEW Datasheet, PDF (42/46 Pages) Astec America, Inc – Two wide input voltage range

z Mixed Distribution
In the real world a combination of parallel and radial power distribution is
often used. Dynamic and high current loads are connected using a radial
design, while static and low current loads can be connected in parallel. This
combined approach minimizes the drawbacks of a parallel design when a
purely radial design is not feasible.
z Redundant Operation
A common requirement in high reliability systems is to provide redundant power
supplies. The easiest way to do this is to place two converters in parallel, providing
fault tolerance but not load sharing. Oring diodes should be used to ensure that
failure of one converter would not cause failure of the second. Figure 21 shows
such an arrangement. Upon application of power, one of the converters will provide
a slightly higher output voltage and will support the full load demand. The second
converter will see a zero load condition and will idle. If the first converter should
fail, the second converter will support the full load. When designing redundant
converter circuits, Shottky diodes should be used to minimize the forward voltage
drop. The voltage drop across the Shottky diodes must also be considered when
determining load voltage requirements. \
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