网络变压器的工作原理介绍和EMC设计

1/21EMC1PHY2/2148VEMI2:a.(DiscreteLANMagneticsModule)b.RJ45(RJ45ConnectorwithIntegratedMagnetics,ICMs):a.(SMT,SurfaceMountType)b.(TH,Through-HoleType)3/21:a.10Base-Tb.10/100Base-Tc.1000Base-Td.10GBase-T(Base-T:BasebandBase-TbpsLANUTPBase-FXBase-T1Base-T4/CDRBase-T4B/5BManchesterEncoding)3:3.14/211CMCCommonmodeChoke(CommonmodeChoke)LNELNUPSH1H2CMC)()EMI:5/21CMC6/212(CenterTappedAuto-Transformer)3()CMCCMCTransformerTransformerCMCCMCTransformer4PCBEMIEMC7/211APHYB(RTL8201A,RTL8201B2RJ-45(L1)3RtsetPHY,TX+/-,RX+/-,4I/O5EMC/EMI,retainingstrapsoftheCrystal690EMI7AB,APHY,,/8PHY(L2)Tx,RxL210~300pxAPCB8/211RJ45PHY1inchRJ451inch23100MILGNDPGND41005PHYPHY63.3V2.5VPHYI/O79/218GND910GNDPGND011PHY12PHYVDDPHYGNDVDD13PCBPGND8250milPGND14PGNDGND151617EMC18I/O19202110/2111/21BPCBEMI123250milC12/21power2EMCPOWER2EMCinner4bottomD121001034E49.9PHYPHYTXRX13/214.7PF47PF14/21FdatasheetEMC12G75UTP121015mil1752015/21HPHYEMI5PCB7-816/21aE1TVSG1G23R097CXA2.2/2W2.2TVSTVSSLVU2.8-4bPGNDGNDPGNDPCB0GNDPGND17/21RJ45PCB40milTOPBOTTOMPCB15mil0.3dB100MabSLVU2.8-4RJ45SLVU2.8-4,0.5kV1.2/50usLC03-3.3,NEBS18/217-9PCBPCBBob-SmitchRJ45GND883.3VPGNDBob-Smith19/21PGNDPCBAC1500VRJ45Bob-SmitchRJ45Bob-Smith751000pFPGNDDC2000V1/10WBob-SmitchBob-SmitchPCB612milBob-SmitchRJ45PCBPCB2200V2200V2200V1200V1200V2200V1000V1500V750V750V1000V320V750V320V320V1250V20/21PCBPCB10milPCBPCB4kVPCB20mil20mil20mil33mil20mil40mil53mil40mil120mil120milPCB4KVPCB2kV1.2/50us4kV0.5kV1.2/50us50RJ45PCB21/211PHYUTPPHYdatasheet2PHYUTP2.5v2.5v3.3v3.3v3.RJ45PHY2.5VPHY3.3V