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L4981A 同步性的应用实例
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2009-05-30
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In most of SMPS using power factor correction,
the convertion is accomplished with a PFC stage,
in boost topology, that delivers a preregulated DC
voltage to a downstream section.
This provides the regulated final DC buses, ensuring
also the galvanic insulation from the mains.
Both sections use a P.W.M. technique each with
their own control.
the convertion is accomplished with a PFC stage,
in boost topology, that delivers a preregulated DC
voltage to a downstream section.
This provides the regulated final DC buses, ensuring
also the galvanic insulation from the mains.
Both sections use a P.W.M. technique each with
their own control.
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