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The isolated DC-DC converter constitutes the front-end of two-stage distributed power architectures (DPA)
with an intermediate bus voltage feeding non-isolated point-of-load (POL) converters. Usually two-stage DPA
schemes do not require a tightly regulated intermediate bus voltage, since the POL will typically accept a
relatively wide input voltage, and the POL provides the needed regulation to the load. In general, the
topologies not based on bridge configurations are used in single-stage DPA for driving loads directly.
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