Efficiency-Optimized,Synchronous Flyback, High …
ReferenceDesignSLVA475 January2012Efficiency- optimized ,Synchron ousFlyback, high -PowerPoEController/Conve rterTheTPS23754is ,powered-device(PD) (SLVU301) istargetedat25-W, synchronous , (at25 C)...................................... .................... January2012Efficiency- optimized ,Synchron ousFlyback, high -PowerPoEController/Conve rterSubmitDocumentationFeedbackCopyright 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 LowerprimaryMOSFETpeakdrain-sourcevoltag eduringoverloads VoiceoverInternetProtocol IPtelephones WirelessLAN wirelessaccesspoints Security Efficient,generalmarketdesign Self-driven, synchronous ,rectifiedseconda ry 25-WoutputpowerfromPoweroverEthernet(PoE )orfroma 48-Vadapter 5-Voutputvoltage2Efficiency- optimized ,Sy nchronousFlyback, high -PowerPoESLVA475 January2012Controller/ConverterSubmitDoc umentationFeedbackCopyright 2012, (at25 C) 36-44mAInrushcurr
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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