【产品】PoE网络摄像机设计不二选择的POE受电端芯片Si3402，提供PD接口受电功能单芯片整体解决方案

时间： 2016-04-28 来源：世强

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近年来，由于社会经济和信息化技术的飞速发展，国家各行业对视频监控产生了前所未有的需求。应用领域越来越广，除了金融、政府、交通等特殊行业外，社区、酒店、公共场所、工厂和商场都已应用或正在实施数字监控，规模和辐射区域越来越大。

但是，正常工作的网络摄像机需要外接两根线，一根网线，一根电线，网络视频监控设备的安装因此受到环境的制约，严重影响了网络视频监控的发展。网络视频监控所用网络摄像头除了需要通过网线来传输视频信号外，还必须全天候为其提供足够的电力。在实施过程中，经常会出现因为无法提供稳定的电源，而不得不重新设计摄像头的安装地点的情况，而重新设计安装地点可能会导致出现监控死角，使安防监控失去意义。

PoE网络摄像机是利用PoE技术来实现网络视频监控的网络摄像机，它拥有PoE受电设备端的功能，利用以太网供电的供电端设备(PSE)提供的直流电,通过双绞线传输至受电端(PD)。引进PoE功能极大的灵活了网络摄像机的供电需求，既可以就地取电，也可以通过网线取电，布局的时候不再受传统的电力线取电点的制约，可以随意移动和变更摄像点，在许多领域都具备极大的优势。

POE监控系统图

图1：POE监控系统图

POE监控系统包括：

• POE交换机

• NVR

• 监控器

• POE分离器

• 网线

• POE网络摄像机等

SILICON LABS最新推出新一代POE（PD）受电端芯片（Si3402-B）产品，能让设计人员轻松将POE功能添加到其设备中。

图2：Si3402内部架构图

常见方案中通常需要几个外部高电压分立器件来完成PD接口的受电功能，而Si3402实现了单芯片整体解决方案，是PoE网络摄像机设计的不二选择。

Si3402主要优点：

• PCB布局尺寸减少30%

• 直接连接至RJ-45 插座以降低EMI

• 支持非隔离和隔离开关拓扑结构

• 内部集成两个完整的二极管电桥

• 内部集成瞬态电压抑制器

• 内部集成开关稳压器/驱动器FET

• 瞬态过压保护

• 欠压锁定

• 热关机保护

• 折返电流限制

• 低EMI倾斜率控制

• 支持增强的POE功能

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我很忙 Lv4. 资深工程师 2018-08-22

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小倾听 Lv8. 研究员 2018-04-18

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冷若冰 Lv7. 资深专家 2018-03-15

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游来游去 Lv8. 研究员 2017-11-06

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Silicon Labs推出的Si3402 和 Si3404 是业内集成度最高、符合 IEEE 802.3 条款的类型 1 合规、PoE PD 接口和脉冲宽度调制 (PWM) 开关稳压器。通过设置新的栏实现设备集成、最低整体 BOM 成本、效率和可靠性，Si3402 和 Si3404 可让设计人员轻松将 PoE 功能添加到其以太网产品中。

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目录- 8-bit Microcontrollers 32-bit Microcontrollers High-performance analog products wireless ICs, SoCs and modules Sensors Interface chip Timing products Isolation products Audio products Video products Voice products Data products Development Tools

型号- C8051T604-GS,SI8420AD-A-IS,WF111,SI7007-A20-IM1,SI8035AA-B-IU,C8051T604-GM,C8051F813-GU,SI8642ET-IS,C8051F541-AM,SL16020DC,C8051F813-GM,C8051F587-AM,C8051F044,SI2434,SI4613,C8051F043,SI4614,C8051F046,C8051F045,C8051F587-AQ,SI2435,C8051F047,C8051F541-AQ,TS3001,TS3002,SI2439,TS3003,SI8712CC-B-IP,TS3004,C8051F060,C8051F531-C-IM,TS3006,C8051F062,SI8710AD-B-IS,C8051F061,SI8712CC-B-IS,C8051F064,C8051F063,EFM32LG230FX - QFN64,EZR32WG230F64R69G,EFM32WG880FX - QFP100,EFM32WG980FX - QFP100,SI8233BB-C-IS1,C8051F531-C-IT,SI51210,SI8635BD-B-IS,C8051F975-A-GM,SI8230BB-B-IS1,SI8232BB-B-IS,C8051F394-A-GM,SI4624,C8051T616-GM,SI4622,SI8635BT-IS,C8051F573-IM,SI4629,C8051F530-C-AM,SI8920BD-IS,C8051F530-C-AT,C8051F801-GM,C8051F711-GQ,C8051F585-IM,SI21802,C8051F585-IQ,EFM32LG390FX - BGA112,SI8605AC-B-IS1,C8051F370-A-GM,EFM8BB10F2G-A-QFN20,C8051F066,C8051F065,C8051F067,SI2457,SI3452B-B02-GM,SI88243ED-IS,C8051F801-GU,C8051F506-AQ,SI7005-B-GM1,SI2167-C,SI21682-C,SI7022-A20-IM,SI8642AB-B-IS,SI8650ED-B-IS,SI2167-B,SI8719BC-A-IP,TSM9118,SI8631AB-B-IS,TSM9117,SI8234AB-C-IS,TSM9119,SI8234AB-C-IM,EFM32WG390FX - BGA112,SI8620AB-B-IS,SI8719BC-A-IS,SI8631EC-B-IS1,C8051F565-AM,EZR32WG330F64R55G,SI8235AB-C-IS1,C8051F835-GS,SI1132,SI3500-A-GM,TS1102-100,C8051F506-AM,C8051F565-AQ,SL2309NZ,SI8065AA-B-IU,EZR32LG230F64R60G,C8051F551-AM,EZR32LG230F128R60G,EFM32LG980FX - QFP100,SI8640AB-B-IS1,SI8600AD-B-IS,SI8710BC-B-IP,SI8710BC-B-IS,C8051F007,EFM32LG290FX - BGA112,SI8712BD-B-IM,EFM32GG295FX - BGA120,C8051F38C-GQ,SI8244BB-C-IS1,C8051F000,C8051F002,C8051F38C-GM,C8051F001,SI8620EC-B-IS,TS1005,TS1004,C8051F006,TS1003,C8051F005,TS1002,TS1001,C8051F963-B-GM,C8051F504-AQ,EFM8SB10F4G-A-QFN20,C8051F823-GS,EZR32LG230F128R61G,C8051F020,EFM32TG822FX - QFP48,SI8650BC-B-IS1,C8051F388-GQ,EFM32G200FX - QFN32,C8051F537-C-AM,C8051F563-IM,C8051F019,EZR32WG330F256R55G,C8051F018,C8051F563-IQ,C8051F011,SI2401,SI4822,C8051F010,EFM32TG222FX - QFP48,EFM32TG210FX - QFN32,SI4820,C8051F012,C8051F015,SI4826,SI2404,SI4827,C8051F017,SI4824,C8051F016,C8051F504-AM,SI4825,EFM32WG232FX - QFP64,C8051T602-GS,C8051T327-GM,C8051T602-GM,BGM111,EZR32WG330F128R68G,C8051F863-C-GS,SI88244ED-IS,C8051F811-GS,C8051F589-AM,SI8421BD-B-IS,C8051F537-C-AT,EFM32GG395FX - BGA120,C8051F531-C-AT,C8051F854-C-GM,C8051F022,C8051F021,SI4831,C8051F023,SI2415,C8051F854-C-GU,SI4835,SI2417,SI4836,EFM32WG290FX - BGA112,SI2169-C,TS1101-100,SI8455BA-B-IU,C8051F040,C8051F042,C8051F041,EZR32WG330F128R69G,SI8232AB-B-IS1,C8051F344-GQ,SI8662EC-B-IS1,SI4840,SI8452AA-B-IS1,C8051F701-GQ,SI4844,C8051F502-IM,C8051F575-IM,SI88622ED-IS,C8051F502-IQ,CP2201,CP2200,EFM32LG942FX - QFP64,SI8641BB-B-IS,EFM32GG942FX - QFP64,SI8655BB-B-IS1,SI8400AB-B-IS,SI8030AA-B-IU,C8051F587-IM,C8051F206,C8051F587-IQ,EFM32TG840FX - QFN64,SI8460AA-B-IS1,C8051F500-IQ,EZR32WG230F64R61G,C8051F546-IM,C8051F500-IM,EZR32WG330F128R67G,SI8660AB-B-IS1,C8051F827-GS,C8051F988-GU,SI52142,SI52143,SI7050,SI52144,SI7055,SI7054,SI7053,C8051F567-AQ,C8051F590-AM,C8051F567-AM,C8051F988-GM,SI8450BA-B-IS1,SI7023-A20-IM1,SL28EB742,SI8231BD-B-IS,C8051F855-C-GU,EZR32WG230F128R63G,EZR32LG230F64R68G,SI8631BC-B-IS1,C8051F300-GM,SI52111,SI52112,SI8920AD-IS,C8051F855-C-GM,SL28EB740,EFM8SB20F16G-A-QFN24,SI8641BB-B-IS1,C8051F300-GS,EFM8UB10F16G-C-QFN28,C8051F920-GQ,C8051F815-GS,C8051F920-GM,C8051F220,EFM8UB10F16G-C-QFN20,TSM9938F,EZR32LG230F64R67G,C8051F221,C8051T320-GQ,SI8651EC-B-IS1,C8051F226,C8051F862-C-GS,TSM9938H,SI8661BB-B-IS1,EZR32WG230F64R63G,SI8661ED-B-IS,SI8220DD-A-IS,EZR32LG230F64R69G,SI8405AB-A-IS1,C8051F565-IM,EFM8SB10F2G-A-QFN20,C8051F395-A-GM,C8051F565-IQ,SI8641BD-B-IS,EFM32TG232FX - QFP64,C8051F231,SI8661BC-B-IS1,C8051F230,C8051T631-GM,SL2305NZ,SI8441AA-D-IS1,SI8630BD-B-IS,C8051T600-GS,C8051F236,SI8442BA-D-IS1,C8051F580-AQ,C8051T600-GM,C8051F803-GS,C8051F580-AM,TS1103-100,EZR32WG230F128R61G,C8051F996-GM,SI21822,SI8645BT-IS,C8051F302-GM,C8051F996-GU,SI8232AB-B-IS,SI8622BC-B-IS,C8051F302-GS,TS7003,C8051F708-GQ,TS7001,EFM32WG890FX - BGA112,EZR32LG230F64R61G,EZR32WG330F128R63G,SI21662-B,SI8600AC-B-IS,SI21662-C,EZR32WG230F128R60G,EFM32G222FX - QFP48,TSM9938T,C8051F523-C-IM,SI21812,EFM32GG990FX - BGA112,EFM32LG360FX - CSP81,SL23EP09NZ,SI8651BD-B-IS,TSM9938W,C8051F510-IM,C8051F556-IM,SI8422AD-B-IS,SI8232AD-B-IS,C8051F411,C8051F410,C8051F413,SI8405AA-A-IS1,C8051F412,C8051F381-GM,SI8040AA-B-IU,C8051F589-IM,C8051F965-B-GM,SI8461BA-B-IS1,SI8655BA-B-IS,SI8660BA-B-IS1,C8051F381-GQ,C8051T621-GM,C8051F346-GM,EZR32WG230F64R68G,EFM8BB10F8G-A-QSOP24,SI51214,C8051F346-GQ,SI51211,SI51218,SI8655BA-B-IU,SI8662BD-B-IS,SI8630BB-B-IS,EFM8UB20F32G-A-QFP32,SI51219,EZR32LG230F64R63G,EZR32WG330F128R60G,C8051F930-GM,SI8630BB-B-IS1,SI8660BB-B-IS1,C8051F502-AM,C8051F825-GS,EFM8UB11F16G-C-QSOP24,C8051F544-IM,EZR32WG330F128R61G,C8051F34A-GQ,EFM32GG332FX - QFP64,SI7006-A20-IM,C8051F502-AQ,SI2165-D,C8051F544-IQ,C8051F986-GU,C8051F34A-GM,SI21832,WF121,EZR32WG230F64R67G,SI8620BT-IS,C8051F569-AM,SI8642BC-B-IS1,C8051F930-GQ,C8051F986-GM,EFM8UB20F32G-A-QFP48,EZR32LG330F64R55G,EFM32LG380FX - QFP100,SI8630

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IP Camera（网络摄像机）产品使用POE供电，采用了POE芯片Si3402，发现Si3402无电压输出，没有按照12V设计输出的原因是什么？

可能有以下原因：PD接的负载小于0.5W，如果小于0.5W也会没有输出，在POE协议中，会认定没有PD负载，PSE自动关闭这个端口的供电。因此需要在IP Camera上，把Si3402输出端的负载加上，总功耗超过0.5W，Si3402 12V输出正常了。

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12/16 - SILICON LABS - 数据手册 - Rev. 1.1 代理服务技术支持现货查询批量订货查看更多版本

Silicon Labs Quality and Reliability Report First Quarter 2021

型号- EFM8X,BGM12X,SI2167-BXX,EFR32MG1V1X,SL2309,SI539X,SI2166-DXX,SI2169-X,TSM96XX,SL38020,SI1102,SI2433,C8051F2XX,C8051F39X,SI2436,SI5225X,SI2438,SI484X,SI5384X,SI2437,SI5372X,TS3001,TS3002,SI242X,SI2439,TS12XX,TS3003,TS3004,TS3005,CP213X,TS3006,EFR32MG14PX,EFM32LG,ZM51X,IAP6XX,SL2304,SL2305,SI49XX,CP2102N,CF0XX,EFM32GG3X,SI2167-AXX,SI2166-CXX,IAP87X,SI2168-X,SI1120,SL16XX,SI2456,SI47XX-B1X,SI47XX-C3X,C8051F1XX,EFM32TG110X,SI5382X,SI220X,SI474X,CP211X,TS6XXX,WF200,TSM60XX,SI5310-C,SI3291X,CYWXXX,SI1132,IAP7XX,SI1133,CP2120,SI221X,SI100X,SI5383X,CF1XX,EFM32JG,SI475X,SI5371X,CF38X,EFM32GG8X,SI5339X,SL28PCIE50,SL188X,TSM98XX,SI2166-BXX,CTXXX,SI828X,SL2874,SI804X,SI5380X,SI7060X,C8051F4XX,TS1005,TS1004,C8051F35X,SI47XX-B3X,TS1003,TS1002,CP2107,TS1001,CP2105,CP2104,EZR32X,SI3404X,CP2109,CP2108,SIM3XXXX,SL2861,SI805X,SL2864,IAP4XX,SI2401,SI2400,SI47XX-B2X,SI2403,CP2103,EFM32HG,CP2102,CP2101,SI47XX-C4X,C8051F36X,CF2XX,CF39X,SI5381X,SI4709,CF36X,SI3407X,SI4708,TS7XXX,S3UX,SL28PCIE30,CP254X,SI2166-AXX,TSM97XX,SL3816,SL2850,SI470X-C19,SI806X,SI4830,SL2854,SI4834,SI2535,C8051F37X,SI4836,CF37X,CP26XX,SI3406X,SI482X,EFM32GG9X,EFM32TG2X,C8051TXXX,C8051F38X,CF34X,EFR32MG13P8X,SI5328,TS1005SL28EB717,SI5327,SI5326,SI5325,SI5324,SI5323,SI53102,SI5322,SI824X,SI5211X,SI5332X,C8051F31X,EFM32G2X,SI5320X,EFR32FG1X,SL28SR,SI703X,SL3800,SI2417-E,SL151,CF4XX,SL153,CF35X,SI2417-D,EFM32TG108X,SL28EB636,SI483X-B,SL158,SI2493-D,SI2493-C,SI53108,C8051F32X,SI2164-X,SI83XX,SI53106,SI825X,51X,SL28EB742,CF32X,EFR32MG13P6X,SI2404-D,IA14XX,SI2404-C,SL28EB745,TSM99XX,SL28EB740,C8051F33X,SI3050-D,SI5321-H,SI3050-E,SI5330X,RM2,SI826X,C8051F5XX,SI3228X,CF5XX,SL28EB731,CF33X,EFR32MG13P7X,SL28EB735,SL23EP,SI2163-X,C8051F34X,SI5331X,SI827X,SI803X,53X,EFR32FG2X,TS9XXX,SI3229X,SI2167-DXX,CF30X,CPTXXXX,SI5376X,C8051F8XX,SI7008,SI7007,SI7006,SI7005,54X,SL28770,SL28EB797,SL28773,SL28774,SL28775,CF31X,SL28776,SL28779,SI3226-X,55X,CP4000,SI241X-B,SI2167-CXX,SI241X-C,IA12XX,SI241X-A,BM11X,SI241X-H,SI241X-F,SI241X-G,SL28EB781,C8051F7XX,SI822X,SI50122,SI5374X,EFR32Z,SI701X,56X,EFR32MG1P7X,EFM32GG2X,EFR32R,SI2457-FT,SL28EB774,CF7XX,WFM200,SI2165-X,SI823X,SI5375X,C8051F30X,57X,SI702X,SI84XX,BGM11SX,CP22XX,EFM32GG1X,TSM12XX,ZW0X,SI307X,500X,BGX13S22GX,CF8XX,SI479XX,EFM32TG11BX,SI41XX,SI87XX,SI308X,59X,SI8SX,SI502X,EFR32MG1P6X,SI2160-X,SI405X,SI8273-D-IDI,TSAXXXX,EFPX,IA10XX,EFM32ZG,C8051F9XX,SI854X,SI406X,SL38160CZC-30B,SI2435-E,SL15300EZC-70,SI2435-F,SI72X,CF9XX,SI2435-C,SI2435-D,EFM32G8X,SI86XX,SI504X,SI2435-B,SL15300EZC-75,EFR32MG1B6X,SI3226X-C,SL28EB721,SL15100CZC-1,SL28EB720,SL28EB725,BGM220SX,IA32XX,SI2191,EFR32MG1P1X,SI2190,SI53019,S3CX,SI2196,EFR32BG1X,SI436X,SI5336X,SL28EB719,SI5301C,SL28EB717,EFR32MG1B7X,IAP90X,SI2415-D,SI53212X,SI5338X,RWM3,SI216XX-X,SI2162-X,SI3052,EFR32MG1P2X,SI3054,SI5216X,SI3056,SI510X,SI534X,SI401X,ZGM,MGM13SX,SI5364,SI5365,SL28PCIE2,SI5368,SI31XX,SI535X,SI5369,SI5366,SI5213X,SI5367,SI5334X,SI402X,SI511X,EFR32MG2X,SI850X,EFM32PG2,EFM32WG,SI5311X,EFM32G3X,SI5013,EFR32BG2X,SI5010,SI88XX,SD35X,SI306X,SI403X,SL28DB,SI2161-X,SI5214X,SI5335X,SI512X,EFM32PG1,SI851X,SL281XX,TSM92XX,SI3219X,SL28PCIE10,CP240X,IAP93X,SI705X-A20,SI2151,SI2150,SI2153,SI3000,SI2155,BGM13S3X,SI2157,SI117X,SI2156,SI2159,SI3006,SL28PCIE19,SI2158,SI3005,SI347X,SI432X,SI892X,SI3008,SI3007,EM26X,SI3009,SL28PCIE16,EFR32MG1B1X,SI5386X,SL28PCIE14,SI3218X,CY2815,SI3011,SI3010,SI3012,SI118X,SI3015,SI348X,SI106X,SI3014,SI324X,SI3017,SI433X,SI5317,SI3016,SI3019,SI3018,SI445X,SI5316,EFR32MG1B2X,BGM13S22FX,EM25X,SI5319,IAP91X,TSM91XX,CP250X,EFM32TG8X,SI2171,SI2170,SI2173,SI2172,SI2177,SI2176,SI2178,SI446X,SI5315X-A,SI5388X,SI5315X-C,TS3300,SI3402X,SI2180,SI2182,SI705X-A10,SI2181,SI5409X,SI2183,SI2185,SI108X,SI302X,SI435X,SL28PCIE06,EM35X,SI3239X,SI2111,SI2113,C8051F0XX,SI2115,SI476X,SI210X,SI101X,EM34X,SI5221X,TS4XXX,SI2434-D,SI2457-D,TS331X,SI2457-C,IAP86X,EFR32MG12PX,SI3450,SI4780,SI3453,SI3211,SI3452,SI3210,BGX220S2,SI2124,SI3455,SI3454,SI3457,SI3215,SI477X,SI2434-C,SI3456,SI114X,SI2128,SI3459,SI5389X,SI2127,SI102X,SI3216,SI3458,SI320X,SI4732-AXX,SI5220X,SL15300DZC-56,SI3217X,TSM93XX,SI4430,SI2494,SI3220,SI4312,SI4313,SI4310,SI4431,SI4311,SI4432,SI2137,SI115X,SI2136,SI3225,SI35XX,SI4438,SI103X,SI2138,SI3227,SI890X,SI442X,TS11XX,EM31X,SI47XX-D,SI8271-D-IDI,SI2140,SI2141,SI3230,SI2144,SI3233,SI2143,SI3232,SI2146,SI2145,SI2148,SI346X,SI2147,SI46XX,SI3238,SI8271-D-YDI

14-Apr-2021 - SILICON LABS - 测试报告 - Rev No 01 代理服务技术支持现货查询批量订货

Process Change Notice #1110051 Addition of C-Pak as a Tape and Reel Supplier

型号- SI3231-A-GMR,SI3065-A-FTR,C8051F381-GQR,CT632-XM0449GMR,C8051T612-GQR,CF305-PX0573GMR,C8051T603-GMR,SI32171-B-FM1R,SI3216M-C-GMR,C8051F530-C-AMR,C8051F712-GMR,SI8235AB-D-ISR,CF330-PM0467GMR,ML0507-B,C8051F349-GQR,CF330-PX0482GMR,SI2457-D-GTR,ML0507-A,SI3006-B-FTR,CF321-PM0226GMR,SI8645BC-A-ISLR,SI3452B-B02-GMR,SI2403-G-FTR,SI8244CB-C-ISLR,CF921-PM0570GMR,SI8230AB-D-ISLR,SI3050-EL-GTR,CP2201-GMR,CP2120-GMR,CF704-XL0010GQR,SI8233AB-C-ISLR,SI8233AD-C-ISR,SI8440BB-C-ISR,SI8230BB-B-ISR,SI8232AB-D-ISR,CF500-XL0010IQR,SI2404-D-FTR,SI8241CB-D-ISLR,SI8620BD-A-ISR,SI32268-C-GM1R,C8051F553-AMR,C8051F302-GSR,C8051F705-GQR,C8051F124-GQR,SI8519-C-ISR,SB014-C-FSR,C8051F802-GUR,SI3056-D-ZS3R,C8051F043-GQR,CF327-PX0563GMR,SI8640EC-A-ISLR,CF330-PX0584GMR,SI2417-E-FTR,CP2102XX0539GMR,C8051F766-GMR,SI2404-D-FSR,SI8244BB-C-ISR,SI3211-E-FMR,SI8645BD-A-ISR,CF000-XX0006GQR,CT321-PX0524GMR,CP2101SX0143GMR,SI8404AB-A-ISLR,SI8642EC-B-ISLR,SI8420AD-A-ISR,SI8435BB-C-ISLR,SI3227-C-GQR,C8051F365-GMR,SI8662BD-B-ISR,C8051F349-GMR,C8051F133-GQR,C8051F587-IMR,SI8423BB-B-ISR,C8051F230-GQR,C8051F302-GMR,SB019-C-FSR,CF023-PM0089GQR,SI3054-G-ZS81R,C8051F714-GQR,SI8641AD-A-ISR,SI3056-D-ZS9R,SI8662ED-B-ISR,C8051F540-IMR,C8051F560-AMR,C8051F531A-ITR,SI8642BD-A-ISR,CP2102XM0499GMR,SI3071-F-FSR,BD0400X0400K,C8051F521-C-IMR,CP2104XX0521GMR,SI8422BD-D-ISR,SIL005-C-GMR,SI8519-C-IMR,SI5041-D-GMR,SI8421AD-D-ISR,SI8655BA-B-ISR,SI8620EC-B-ISR,CF534APM0594IMR,SI8642BC-B-ISLR,SI8235AA-E-IMR,CT602-PX0427GMR,SI8422AB-B-ISR,SI8460AB-A-ISLR,SI2418-B-FTR,C8051F562-AQR,SI8455BA-B-ISLR,C8051F544-AMR,CF340-PX0417GQR,SI3019-C-FTR,SI8900B-A01-GSR,SI8651ED-A-ISR,C8051T605-GSR,SI2434-D-FTR,C8051F811-GSR,SI3461-E03-GMR,CT604-XM0579GMR,SI3052-ZQ9R,BD0300X0300B,SI32269-C-FM1R,C8051F901-GUR,SI3450-B-GMR,SI8655BA-B-IUR,C8051F804-GSR,SI3456-F04-IUR,SI2434-D-FSR,C8051F363-GQR,C8051F703-GQR,C8051F320-GQR,SI2212-C-GQR,SI8900D-A-GSR,C8051F587-IQR,SI32360-C-FM1R,C8051F714-GMR,C8051F560-AQR,SI8661BC-B-ISLR,C8051F530-C-ATR,C8051T605-GMR,SI32267-C-GMR,SI3202-G-FSR,SI8232AB-B-ISR,CF321-PM0161GMR,SIL014-A-GMR,SI8236BA-C-IMR,SI8441BB-D-ISLR,S0-24L-A,SI8441AA-D-ISLR,CF412-XM0411GQR,SI3018-F-FSR,C8051F580-AQR,C8051F300-GMR,SI2415-D-GTR,C8051F041-GQR,SI2417-C-FTR,SI3456-E04-GUR,SI8235AB-D-IMR,SI8451AB-A-ISLR,SI8631BD-B-ISR,SI3080-F-FSR,C8051F544-IQR,CP2131-E01-GMR,SI3018-F-FTR,SI8621ED-B-ISR,C8051F755B-GMR,SI8660BA-A-ISLR,C8051T614-GQR,C8051F802-GMR,SI8220BD-D-ISR,C8051F551-AMR,SI8442AB-C-ISR,SI8230BB-D-ISR,SI8631BC-A-ISLR,C8051F122-GQR,C8051F542-IMR,SI2493-FTR,SI8430AB-C-ISR,C8051F585-IMR,SI8600AD-A-ISR,C8051F508-IMR,CT600-PX0422GSR,CP2132-F01-GMR,C8051F800-GMR,CT634-PX0475GMR,SI32392-B-GMR,SI4010-C2-ASR,SI32268-C-FMR,C8051F531A-IMR,SI8605AD-B-ISR,SI8641BA-C-IUR,SI3014-C-FTR,SI8233BB-D-ISLR,SI8435BB-D-ISR,SI8423BB-D-ISR,SI8422AB-D-ISR,C8051F300-GSR,SI8400AB-B-ISR,SI8660AD-A-ISR,SI4010-C2-ATR,SI8462BA-A-ISLR,SI8661BD-A-ISR,CP2101SX0229GMR,SI8640ED-B-ISR,SI8445BA-D-ISLR,C8051F757B-GMR,SI3201-GSR,CP2102XX0489GMR,CF311-PX0256GMR,SI3453C-B01-GMR,C8051F537-ITR,SI8430BB-C-ISLR,C8051F750B-GMR,SI8235AB-D-ISLR,CP2102SX0214GMR,SI5041-D-ZM1R,SI8450BA-B-ISLR,SI3244-D-GQR,SI8235BA-C-ISLR,C8051F221-GQR,SI8462AB-B-ISLR,CP2102SX0341GMR,ABX0092,C8051F526-C-AMR,C8051F536A-IMR,C8051F901-GMR,SI3024-ZS4R,SI8622EC-A-ISR,C8051F546-AMR,C8051F313-GMR,C8051F585-IQR,SI8630EC-A-ISLR,SI3112-A-ZM1R,CF332-PX0557GMR,C8051F967-A-GMR,SI4010-C2-ZS2R,SI3203-B-FQR,SI3239-C-FMR,CF921-PM0529GMR,SI3452A-B01-GMR,SI8234AD-D-ISR,SI8650BD-B-ISR,C8051F553-IMR,SI8663BC-A-ISLR,C8051T601-GSR,C8051F701-GQR,SI3220-G-FQR,CF340-PX0217GQR,C8051F996-GMR,C8051F829-GSR,C8051F503-AQR,SI8463AB-B-ISLR,SI5040-C-GMR,SI8431BB-C-ISR,C8051F385-GQR,CF022-PM0442GQR,SI2166-A10-FMR,C8051F813-GMR,SI3205-D-FSR,MS0P8-A,SI3066-B-FSR,SI8234AB-C-ISR,SI8660BC-B-ISLR,SI3066-B-FTR,SI3241-D-ZQ1R,SI8652EC-B-ISLR,SI8463AA-A-ISLR,C8051F523-C-AMR,CF360-SM0456GQR,SI8452BA-A-ISLR,SI8420BB-D-ISR,C8051F367-GMR,C8051F582-AQR,SI8900B-A-GSR,SI4010-C2-ZS1R,CF330-PM0254GMR,CF342-XM0487GMR,C8051F34D-GQR,CF320-PM0635GQR,SI8220CD-A-ISR,C8051F410-GQR,SI2435-C-FTR,SO20WP11,CF412-PM0379GQR,SI2435-D2-FTR,SI3225-G-FQR,C8051T630-GMR,SI8441BB-D-ISR,SI8651EC-B-ISLR,CT604-PM0508GMR,C8051F800-GUR,C8051F34B-GMR,SI8235BB-C-ISR,C8051F540-AMR,SI3073-F-FSR,SI3203-B-FMR,SI8650BC-A-ISLR,SI32261-C-GM1R,C8051F569-IMR,C8051F587-AMR,SI8220BB-D-ISR,C8051F965-A-GMR,C8051F583-IMR,SI3453D-B02-GMR,C8051F815-GSR,C8051F383-GMR,C8051F531A-ATR,SI8235BD-D-ISR,SI8606AC-B-ISLR,SI8600AC-B-ISR,C8051F352-GQR,CP2104PX0523GMR,S0IC16-A,SI3010-FSR,C8051F555-AMR,CF410-XM0634GQR,EIAJ7E2W24NA,S014-P,SI8620BC-B-ISR,C8051F521-C-AMR,SI8650EC-A-ISLR,SI32177-B-GMR,SI8642HD-A-ISR,SI8641BA-A-IUR,SI8635BD-A-ISR,TS50P28,C8051F023-GQR,C8051F980-GMR,SI3453A-B02-GMR,SI2438-A-FTR,SI8651BC-B-ISLR,C8051F327-GMR,C8051F912-GUR,C8051F582-AMR,C8051F501-AMR,SI3226-D-FQR,SI8663EC-A-ISLR,ML0404-A,CF340-XM0392GQR,SI8605AC-A-ISLR,SI8502-C-IMR,SI8663ED-A-ISR,C8051F710-GQR,SI8642ED-A-ISR,C8051F338-GMR,BD0700X0700J,SI8230BD-B-ISR,SI8442AB-D-ISLR,C8051

11 Jan 12 - SILICON LABS - 产品变更通知及停产信息 - rev AA 代理服务技术支持现货查询批量订货

USING THE Si3402-B POE PD CONTROLLER IN ISOLATED AND NON-ISOLATED DESIGNS

型号- SI3402-B

2021/01/21 - SILICON LABS - 应用笔记或设计指南 - Rev. 0.2 代理服务技术支持现货查询批量订货查看更多版本

PD控制芯片Si3402的评估板上特征电阻为什么要求是24.3KΩ？

PD的特征电阻要求是25KΩ±5%(23.75KΩ~26.25KΩ)。相应的PSE可以接受19KΩ至26.5KΩ较宽的电阻范围。24.3KΩ是针对于Si3402B的demo，考虑了寄生串联和并联电阻以及Si3402B内部阻抗的影响给出的数值。

2017-05-05 - 技术问答代理服务技术支持现货查询批量订货

以太网供电（POE）的受电端电源芯片（PD）Si3402，其评估板是按照5V电压输出设计，如果要实现12V输出，应该如何实现？

可以通过以下方式实现：1、如果要修改Si3402的输出电压，修改部分电路参数即可：变压器参数，输出电压反馈电路参数，滤波电容等。 2、在评估板的用户手册“Silicon Labs Si3402 ISO-EVB评估板使用说明”第10页，详细列出了5V，9V和12V电压输出的参数。

2017-05-05 - 技术问答代理服务技术支持现货查询批量订货

Simplifying Power over Ethernet

型号- SI3408X,SI34071,SI34061FB12V4KIT,SI3404ISOC3EVB,SI34061,SI3471,SI3462,SI3474-KIT,SI3474A,SI3474,SI34071AC5V8KIT,SI3454,SI3474B,SI8621,SI3402,SI3471-KIT,SI3404,SI3459,SI3406,SI34061FB5VC4KIT,SI3404B12V3KIT

JULY 2020 - SILICON LABS - 技术文档代理服务技术支持现货查询批量订货