Texas Instruments UCC28060EVM Power Supply User Manual


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6.1OutputRippleVoltageatFullLoad
6.2InputRippleCurrentCancellation
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TypicalPerformanceData
Figure8illustratestheoutputripplevoltage.
Figure8.V
OUT
Ripple,P
OUT
=300W
Figure9throughFigure14showtheinputcurrent(M
1
=I
L1
+I
L2
),InductorRippleCurrent(I
L1
,I
L2
)versus
rectifiedlinevoltage.Fromthesegraphs,itcanbeobservedthatinterleavingreducesthemagnitudeof
inputripplecurrentcausedbytheinductorripplecurrent.
Figure9.InductorandInputRippleCurrentatFigure10.InductorandInputRippleCurrent
85V
RMS
atPeakofLineVoltageat85V
RMS
InputatHalftheLineVoltage
SLUU280B–May2007–RevisedJuly2008UCC28060EVM300-WInterleavedPFCPre-Regulator7
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