Transcription of Efficiency-Optimized,Synchronous Flyback, High …
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Efficiency-Optimized,Synchronous Flyback, High …
ReferenceDesignSLVA475 January2012 efficiency - optimized ,SynchronousFlyback, high -PowerPoEController/ConverterTheTPS2 3754is ,powered-device(PD) (SLVU301) istargetedat25-W, synchronous , (at25 C).. January2012 efficiency - optimized ,SynchronousFlyback, high -PowerPoEController/ConverterSubmitD ocumentationFeedbackCopyright 2012, (SLVU301) arenotedontheschematicshownin Newflybacktransformerdesign Betterselectionofmagnetizinginductancefo rCCMoperation Newwindingstrategytoreducecopperlosses Usessamecoreandbobbinsizeandfootprint RCDclampimprovements DiodeusedforfasterprimaryFETturnoff Newdead-timeresistorvalueforoptimumeffic iencyatfullloadandacceptableefficiencyat noload. Useoffeedforwardresistorforbettercontrol ofpeakcurrentandvoltageathigherinputvolt age. Otherupdates:Compensation,improvedslopec ompensation,40-VsynchronizedFETforlowdra in-sourcestress. Otherbenefits LowerprimaryMOSFET peakdrain-sourcevoltageduringoverloads VoiceoverInternetProtocol IPtelephones WirelessLAN wirelessaccesspoints Security Efficient,generalmarketdesign Self-driven, synchronous ,rectifiedseconda ry 25-WoutputpowerfromPoweroverEthernet(PoE )orfroma 48-Vadapter 5-Voutputvoltage2 efficiency - optimized ,SynchronousFlyback, high -PowerPoESLVA475 January2012 Controller/ConverterSubmitDocumentationF eedbackCopyright 2012, (at25 C) 36-44mAInrushcurrent-limit100-180 Operatingcurrent-limit850-1100 Vin
www.ti.com Bill of Materials 6 Bill of Materials Table 2. PMP6672B Components List According to the Schematic Shown in Figure 1 Count RefDes Value Description Size Part Number MFR
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