【应用】可满足不同供电需求的电源芯片，低成本RS-485通信隔离方案
RS485总线因其接口简单，组网方便，传输距离远等特点在工业控制、电力通讯、智能仪表等领域广泛应用。下图1为RS-485网络应用框图，图中5脚和8脚是电源引脚，6脚和7脚就是485通信中的A和B两个引脚，而1脚和4脚分别接到我们单片机的RXD和TXD引脚上，直接使用单片机UART进行数据接收和发送。2脚和3脚是方向引脚，其中2脚是低电平使能接收器，3脚是高电平使能输出驱动器。我们把这两个引脚连到一起，平时不发送数据的时候，保持这两个引脚是低电平，让RS485处于接收状态，当需要发送数据的时候，把这个引脚拉高，发送数据，发送完毕后再拉低这个引脚就可以了。为了提高RS485的抗干扰性能，需要在靠近RS485的A和B引脚之间并接一个电阻。
图1 隔离式RS485典型应用框图
传统隔离式RS-485网络使用的通信隔离产品一般都需要供电电源。如上图1的红框所示，该电源主要给图中的隔离光耦进行原副边供电，本文针对上图的电源需求推荐一款由圣邦微（SGM）公司推出的低成本电源芯片SGM46000，该电源可以改善以往隔离型工业电源的设计复杂度较大、设计成本比较贵、体积比较大等缺点。
图1中所需求的供电电源为5V转5V，但是SGM46000可以实现的隔离电源设计种类很多，典型应用如3.3V~5V、5V~3.3V、5V~5V、5V~12V、5V~±15V，其实只要是输出电压30V以内，输出电流50mA以内均可以使用。也就是说利用SGM46000可以设计出一系列的工业电源，满足不同的485通信隔离芯片的供电需求。
总之SGMICRO公司的DC/DC转换芯片SGM46000，集成原边控制器和H桥及驱动器，可直接驱动隔离变压器，将高压和用户可能触碰到的低压直流电进行隔离，保障用户安全，避免触电风险。输入电压2.5V至 5.5V，支持3.3V、5V或12V多种隔离输出电压，最大输出功率可达3W，-40℃~+125℃工作温度范围，满足控制面板对电压、功率和高温的工作环境需求，让系统更加安全可靠。SGM46000的内部框图如下图2所示。
图2 SGM46000的内部框图
SGM46000产品特性：
• 可为隔离电源中的变压器提供高达3W的功率
• 宽范围2.5V~5.5V单电源供电
• 可通过电阻编程设置内部振荡器模式
• 带看门狗的外部时钟模式
• 禁止模式
• 欠压锁定
• 热关断
• -40℃~+125℃工作温度范围
• SOIC-8封装
图3 SGM46000的典型应用电路
最后附上SGM46000的典型应用电路，如图3所示。由图可知SGM46000只需搭配少量的外围元器件就可以轻松实现电源转化，整体BOM成本低廉。同时SGM46000也支持相关demo申请和变压器推荐，支持一整套的成本评估，具体信息索取可电话联系世强。
通过以上介绍相信大家对SGM46000在485通信隔离上的用法已经很清楚了吧，如果觉得本文不错记得收藏和点赞哦！
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SGMICRO（圣邦微）信号链和电源管理芯片选型指南
描述- SGMICRO specializes in high-performance and high-quality analog and mixed-signal integrated circuits, and is committed to building a comprehensive portfolio of the highest quality analog and mixed-signal integrated circuits to address all customer needs.
型号- SGM11108M,SGM8306-2,SGM8306-1,SGM61450,SGM3733B,SGM11108E,SGM852,SGM853,SGM851,SGM5347-12,SGM2558A,SGM2558B,SGM8261-5,SGM2564,SGM8261-1,SGM5347-10,SGM8261-2,SGM2549,SGM48017C,SGM72110,SGM8094,SGM836,SGM8091,SGM837,SGM61220,SGM8092,SGM8093,SGM835,SGM72108,SGM2553,SGM72106,SGM2555,SGM809B,SGM4519,SGM4517,SGM4518,SGM48010,SGM11106C,SGM63600,SGM41611,SGM4520,SGM4521,SGM48005,SGM8417-4,SGM8417-2,SGM4051C,SGM48000,SGM48001,SGM48002,SGM3843A,SGM61433,SGM621,SGM84782,74HC574,SGM58031,SGM620,SGM862,SGM41600,SGM2572,SGM41603,SGM860,SGM2571,SGM51622H,SGM4995,SGM4511,SGM2574,SGM4996,SGM4512,SGM4510,SGM2575,SGM51622D,SGM4515,SGM8T245S,SGM4516,SGM8250-1,SGM8250-2,SGM4514,SGM3209,SGM809,SGM8557-3,SGM8557-1,SGM8557-2,SGM803,SGM61012,SGM804,SGM802,SGM61013,SGM810,SGM811,SGM61007,SGM61006,SGM4782,SGM7237B,SGM8902,SGM8903,SGM8904,SGM4542,SGM8905,SGM4548,SGM4549,SGM3699,SGM4546,SGM4547,SGM48013C,SGM62110,SGM61020,SGM62112,AAP6153A,SGM61022,SGM62111,SGM800,SGM2596,SGM3200,SGM3206,SGM8270-2,SGM3207,SGM4535,SGM3204,SGM8270-4,SGM8T245,SGM829,SGM61230,SGM42512,SGM41664,SGM825,SGM61232,SGM823,SGM61234,SGM824,SGM891B,SGM42507,SGM42506,SGM40567,SGM4560,SGM42505,SGM4561,SGM6503,SGM4566,SGM8925,SGM6502,SGM8926,SGM6501,SGM4564,SGM8927,SGM5349-16,SGM4565,SGM6505,SGM4568,SGM6504,SGM8909,SGM818,SGM890B,SGM816,SGM42501,SGM40565,SGM42500,SGM814,SGM815,SGM812,SGM40560,SGM40561,SGM821,SGM822,SGM61235,SGM820,SGM4551,SGM4552,SGM4550,SGM4555,SGM4556,SGM4553,SGM4554,SGM51652S8,SGM8910,SGM5347-8,SGM4558,SGM11124E,SGM37863A,SGM11124F,74LVC2T45,SGM893B,SGM4581,SGM8941,SGM4582,SGM4583,SGM48521Q,SGM8704,SGM4588,SGMNQ59430,SGM8705,SGM4589,SGM8706,SGM8707,SGM8942,SGM8701,SGM8702,SGM8703,SGM12213A,SGM11210A,SGM61060,SGM2050C,SGM12UB1D2,SGM892B,SGM8276-4,SGM6510,SGM4573,SGM3001,SGM4574,SGM42513,SGM6514,SGM3005,SGM6513,SGM4578,SGM8276-2,SGM3002,SGM6512,SGM42622B,SGM8276-1,SGM3003,SGM6511,SGM4576,SGM8931,SGMOP17C,SGM8932,SGM8933,SGM6516,SGM12214A,SGM8934,SGM6515,SGM11210M,SGMNE20220,74AVC8T245,SGM3141B,SGM61030,SGM42403Q,SGM42553,SGM61032,SGM61031,74HC165,SGM62116,SGM8953-1,SGM62118,SGM8953-2,SGM62117,SGM8708,SGM8709,SGM4075-2,SGM3140B,SGM61040,SGM4075-1,SGM42544,SGM7300A,SGM7300B,SGM42541,SGM42540,SGM8951,SGM8952,SGM8710,SGM4590,SGM5200,SGM38045,SGM38042,SGM6533,SGM8711,SGM8712,SGM8955,SGM38046,SGM8956,SGM2053S,SGM8199L2,LM2904,SGM8199L1,SGM41002,SGM8968-4,SGM8968-2,LM2902,SGM8968-1,SGM8740,SGM8741,SGM8742,SGM2077A,SGM8743,SGM2077B,SGM8263-1,SGM8748,SGM8263-2,SGM8417-1,SGM8749,SGM12CB1A5,SGM8744,SGM40666B,SGM8745,SGM11104S,SGM40666A,SGM8746,SGM8747,SGM41513D,SGM41513A,SGM42561,SGM42560,SGM8957-1,SGM8957-2,SGM42562,SGM5208-14,SGM5223,SGM48018C,SGM11102F,SGM11102G,SGM41512A,SGM37603A,SGM8521,SGM8522,SGM11102S,SGM33685A,SGM5018,SGM33685B,SGM33685C,SGM8524,SGM8604-1,SGM11103E,SGM8604-5,SGM8193A3,SGM11103F,SGM8604-2,SGM8193A2,SGM48019C,SGM8604-3,SGM8193A1,SGM8193A0,SGM37604A,SGM8751,SGM11103S,SGM41007,SGM41008,SGM6332,SGM8750,FT2830P,SGM11212M,SGM41280,SGM41281,SGM41283,SGM5353-16,SGM37891A,SGM41285,SGM41286,SGM7SZ244S,SGM8542,SGM51652H8,SGM8543,SGM8301,SGM8544,SGM8302,SGM8545,SGM51652H4,SGM8541,SGM8429C-4,SGM8304,SGM8607-2,SGM37892A,SGM13003A,SGM8531,SGM8773,SGM8532,SGM8534,SGM8770,SGM8771,SGM8772,SGM8535,SGM8536,SGM8537,SGM12024A,SGM8538,SGM65230,SGM37893A,SGM65231,SGM65232,SGM8969-2,SGM8969-1,SGM13002A,SGM2035C,SGM7232,SGM9128YP,SGM41291,SGM2036S,74LVC1G32Q,SGM13001C,SGM13001B,74LVC138,SGM2581E,SGM8958-2,SGM41295,SGM13001A,SGM8958-1,SGM7222,SGM6132,SGM8554,SGM7223,SGM8555,SGM7224,SGM6130,SGM8556,SGM2581C,SGM8551,SGM7220,SGM2581A,SGM8552,SGM7226,SGM7227,SGM7228,SGM7229,SGM44599,SGM8581,SGM8713A-1,SGM8582,SGM6613A,SGM8584,SGM832B,SGM41282C,SGM832A,SGM8714B-1,SGM8924A,SGM811C,SGM5355-16,SGM7SZ19,74LVC1G125,SGM48535B,SGM89000,SGM7SZ14,SGM811B,SGM48535A,SGM48752X,SGM431VB,SGM2560A,SGM37603,SGM2560B,SGM6611C,SGM15CB1A4,SGM810B,SGM41280A,SGM8591,SGM8592,SGM48753X,SGM9203,SGM6612A,SGM8594,SGM8922A,SGM4T245,SGM48753,SGM48754,SGM48755,SGM48756,SGM51242R8,SGM48757,SCM40668,SGM813B,SGM48759,74AVC4T245,SGM8140,SGM8141,SGM48751,SGM449,SGM48752,SGMNQ07430,SGMPM21330,SGM48510,SGM458,SGM3785S,SGM37864,SGM61720,SGM459,SGM37863,SGM457,SGM8142,SGM452,SGM450,SGM451,SGM05UB1B3,SGM37862,SGM37861,SGM05CB1A8,SGM05CB1A7,SGM812B,SGM05CB1A4,74GTL2005,SGM25881,SGM447,SGM448,SGM446,SGM7SZ244,SGM8478-1C,SGM51242R4,SGM8139,SGM51242R2,SGM3705,SGM48536,SGM48537,SGM48538,SGM48539,SGM5351-16,SGM2588G,SGM2588E,SGM2588K,SGM3712,SGM3713,SGM2588C,SGM3710,SGM3711,SGM2588A,SGM48522,SGM48523,SGM48525,SGM48526,SGM48760,SGMNQ07440,SGM48520,SGM48521,SGM8557-5,SGM71XX,SGM706B,SGM460,SGM3701,SGM3700,SGM3727,SGM3741B,SGM3725,SGM3726,SGMOP07,SGM898,SGM899,SGM896,SGM897,SGM895,SGM4823,SGM2566B,SGM3735,SGM3732,SGM4822,SGM2566A,SGM3716,SGM3740B,SGM48544,SGM4806,SGM3717,SGM48545,SGM3714,SGM3715,SGM4809,SGM4807,SGM3718,SGM4808,SGM3719,74LVC157,SGM48780,SGM48540,SGM48541,SGM48542,SGM48543,SGM37898,SGM51652H,SGM51652D,SGM3720,SGM37891,SGM4812,SGM37892,SGM4810,SGM37895,SGM3749,SGM3747,SGM3748,SGM72204A,SGMNQ40430,SGM
Littelfuse（力特）保护继电器和控制装置选型指南
描述- Littelfuse is a diversified industrial technology manufacturing company empowering a sustainable, connected, and safer world. Across more than 20 countries, and with approximately 17,000 global associates, Littelfuse partners with customers to design and deliver innovative, reliable solutions.
型号- TDR4B23,EL3100,RK-325,TDR4B22,SCR,CT-0050-F10,TDI120AL,ECSL4HBH,DLMU,TDML110DL,SD12-PC,KSPSN21B,LLC42B15A,RK-332,SE-TA6ASF-WL,PC-200-LLC-CZ,THDS410.25SA,ZSCT30-31,TSU2000 SERIES,RK-325I,P1004-XX-(X),ORB120A25,P1004-12-X,SE-FLASH,PSC11,TDM24DL,LLC6210F10M,SB6000,FS146RC,SIO-RTD-02-00,LLP-24,FS165-30T,ARPX1S SERIES,233P,RK-105I,NDS-11,50R40029,MPS-RTD,460-15-100-SLD,ESDR423A4,ECSL4HAC,RM1000 NEMA 4,ASXX SERIES,KRDI2110S,ESDR423A3,KRPDA2129RXE,TDB120AL,LLC54AF10,455 SERIES,KRDM223,KRDM220,KRDM221,ORS120A150SD,PGC-31FC,PGM-8325,460-XXX-SP,FS126-45,CT-0800-F30,CT-0400-D20,TSB634,LLC26A1F25C,PLR240A,ECSW3LABT,TSB632,TDUH SERIES,TSDS SERIES,WVM811AH,TDM24AL,LPSM003Z,HRDM SERIES,235P,FA155-2,KSDB315SP,601,SB6100-01X-0,102A,KRPD215S190SMB,601 SERIES,EL731-03-X0,PC-200-LLC-GM,SIR,MPU-32-X69X SERIES,ORS230A150SD,KSD3120A,FPS,ECSW6MBHT,MSM20.15W9,FB9L,HRDR331A1,TSD6 SERIES,TS22120,201575-AU,201-100-SP-DPDT,FS300 SERIES,ECSH31F.08D,FS126-60,TDS SERIES,KRDI220,MSM130W9,KSD2 SERIES,FS500,102A SERIES,201-XXX-SP SERIES,LLC52BA,A0220 SERIES,460-200-SP,ALT230-S-SW,HRDR121A4R,LLC52AA,ORB120A160,P0400-82,TDI SERIES,PC-XXXLLC-CZ SERIES,P0400-83,DCSA5,PC-XXX-LLC-GM,P0400-86,SLR,INFORMER-MS,HRDB321,CT-0150-D10,PGC-4064,HRDB324,KSDB SERIES,FS512,ECSW4MBHT,TSDR612.5SA4.5S,TMV8000 SERIES,TSD2411S,ECSW4MBGT,FS524,CT-XXXX-DXX,KSDR SERIES,RS SERIES,P1004-XX,MPU-32-X69X–XXX00,WVM,SLR1610A,KSD1320,ASQU SERIES,TS1424,TS1423,TS1422,TS1421,HRDR330A0R,TSB222,77C SERIES,T10,CT-1200-F15,NGR SERIES,NGR1080,TS1416,NGR1081,TS1415,HRISW21FT,TS1412,KRPS913MB,HLMUDNAAN,202-575-RP,CT-0300-F10,TSD7621,LSRU-115-OR-2,DCSA50,HLMU,EL731-23-X0,NGR1077,NGR1078,NGRM-ENC-230-00,TRDU24A1,NGR1079,TRDU24A2,AF0100-10,TRDU24A3,SB6100-21X-0,NGR1070,NGR1071,NGR1072,NGR1073,NGR1074,ESDR450A1,NGR1075,NGR1076,ECS40AC,TVM460A75S2M,PMA-16-RTDB,PGR-3200-120,SE-703-0U-0X,ESDR123B4P,FS SERIES,NGR1066,NGR1067,D1100,PLR SERIES,NGR1068,AF0100-00,NGR1069,202,KSDB120P,KRPSD25S,TRM24D1X2,777-HRG-P2,ECS40BC,TRDU120A3,TRDU120A1,TRDU120A2,ERDM4130S,TDS120ALD,LLC14B60AX,ISS-102 SERIES,TDIH SERIES,NGR1050,NGR1051,NGR1052,NGR1053,TVW6510S0.4S,FB230A,CT-0300-F20,KSD3432A,PGE-05KV,DCSA20,LLC2,LLC1,LLC6,NGR1045,LLC5,ALT-XXX-1-SW,LLC4,SE-330AU-XX-0X,TVM230A101S1S,LLC8,SC4 SERIES,T10120,NGR1041,KSPSN13MI,VTP0E,PGE-35KV,FS100,TDB12D,T10S400,TSDR4412SA1,LLC842F103M,TDSL SERIES,KRD92115MB,FPU-32-00-00,201-200-SP-DPDT,KRD92115MA,ECSH4HAD,SE-GRM250,PGR-4300 SERIES,NGR1036,PMA-23,NGR1038,PMA-24,PMA-21,ERDM429,ERDM425,KRDB SERIES,ERDM427,FS590,NGRM-ENC-431-21,ER-72KV,777-MV-P2,240,460-MR,PCR SERIES,TDBL120AL,TS1211.5,EL731-11-X0,CT30S1,LLC4 SERIES,KSDS230,PGC-3140,3506002,FS126,FS127,TSD2434,DSQU SERIE,TDB24DL,T2D120A15M SERIES,TDUSH3001A,ALTXXX-X SERIES,THD7421A,TDUIL3001A,ERDM423,ECS6HAH,ERDM422,TDSH120AL,RS4B12,FPS SERIES,TS13115,PMA-18,HRPSD12HI,PMA-16,KSDU SERIES,PMA-17,LLC825F5M,LSRU-115-AL-3,PMA-14,PMA-15,PMA-12,LSRU-115-AL-2,PMA-13,PMA-10,TSDS421,SE-105,MPS-CTU-01-00,ORM24D13.5,TH1 SERIES,TDUIL3002A,MSM450W6,SE-107,DLMUBLAAA,FS143,TSU2000,FS146,RS1A11,KSPU SERIES,SB5060-20X-0,LLC44B4A,TCR9C,MSM42W6,50R-100-2,TDUB SERIES,THDB SERIES,FS152,777-HP-P2,PGR-8800-00-CC,LSR-XXX,LLC14B15AX,TS441165,PGR-4300,TSD24145S,ASXX,LSRU-115-OU-1.5,KSD2221,ORB,FS162,TA24A5,KRDR424A4,KSDR40A0,TA24A3,HRDR321A4R,TRM24A8Y5,KRDR424A0,TH1C415,TSDR6412SA1,ORM,RK-310X-0Y,SIR1A20A4,ALT115-S-SW,ORS,VMPS,TDIL SERIES,LLC44B2A,VMPU,FPS-CTU-03-00,ORB24A25,BZ1,777-ACCUPOWER,HRPS SERIES,PHST-38QTN,TS2412,LSRX-C,350200,HLMUDRAAA,LLC44B1A,KSD2413M,TRDU SERIES,TSS SERIES,SIR1A1A4,KRPSA24M,TL230A5,ECS2HBC,TS2421,PC-100-LLC-CZ,TS2422,TS2423,PGA-LS20,777-575-HRG-P2,IR KIT-12,TSDR6110SA30S,1N5339B,AC700-SMK,KRDB21180S,KRPSA22B,ER-15KV,PGA-LS30,TDB120ALD,LLC44B5F100,TSS421,ISS-102A-LC,202-200-SP,MPS-469X,TVM480A100.5S3S,KRDM121,ARP43,ARP41,777-KW-P2 SERIES,HRDR431A1R,MPU-32-X69X,TSS424,TSS422,TSD6310.8SN,THDS SERIES,KRPD SERIES,601575,ASTU SERIES,TS121150,PGA-LS10,VTP5N,460L-OEM,TCSA50,LLC44B5A,TDUIL,ELCT,SE-CS40,TDUIH,SE-502,TDR2A23,VTP4B,TSDR215SB18M,VTP4F,NGRUS003,VTP4J,P0200-20,PC-100-LLC-GM,P0200-19,SE-CS30,NGRM-ENC,PCR11,PCR10,TDUL SERIES,PMA-60,WVM611AL,PLS480A,PRLM423,VTP3B,ECSW,PGR-8800-00,PCR13,PCR12,PLM6502,ESDR120A0P,SB5032-21X-0,ESDR424A1,WVM611AH,ERDI436,VTP2C,VTP2A,TDUSL3000A,VTP2F,TCS,VTP2E,ORB SERIES,VTP2J,202-200-SP SERIES,KSPSA21FT,MPS-469X–XX000,SCR490D,THC421C,ELCT30-88,IR KIT-36,VTP2P,TDB,P1004-9,202 SERIES,SE-CS10,TDI,KRDR420A3,ECSL31A,KRDB415S,TDM,TSD7611S,VTP1B,TDS,SERIES,TS141180,TDR,TDU,VTP1D,VTP1C,MSM11W6,MSM210P3,TDB24AL,MPS-RTD-01-00,PGR-6100,PMA-55,PGR-6101,ARP23S,50R200,PLS120A,PGR-6100 SERIES,KSDB330N,KRDB,777-575-TS,FA155,KRDI,ALT115-X,KVM4,KRDM,ALT115-S,ECSH34F.08C,KRDB1120M,TDML120AL,KRDS,EFCT SERIES,KRDR,KVM6,TDUIL SERIES,EL731-04-X0,MPS-469X-PMA24,PGR-2601,THD1B410.5S,201-100-DPDT,AF0500 SERIES,ECS40A,SE-TA6A SERIES,TDM12DL,NGRM-ENC-231-01,TSDR442MA2,ELCT5,77C-KW SERIES,KRD3,FS219-45,ISS-102AA-DCS,TH1,A0220.0040,KRD9,KSDB1115SP,TDR4A23,MPU-32-X69X-PMA16,KVM,KRDM1110S,EFCT-26,111P,FS126RC-45,THC,T
【经验】如何实现低成本隔离电源设计？
专用于隔离电源设计的SGMICRO DC/DC转换控制器芯片SGM46000，可解决隔离电源设计复杂度较大、设计成本比较贵、体积比较大等问题。
SGM46000 3W Primary-Side Transformer H-Bridge Driver for Isolated Supplies
型号- SGM46000,SGM46000XPS8,SGM46000XPS8G/TR
【选型】替换ADM2587E的低成本DC-DC电源SGM46000+3通道数字隔离Si8631方案
本文推荐一款低成本的DC-DC电源——国产圣邦微的SGM46000和Silicon Labs的电容隔离芯片Si8631来替换ADM2587E。SGM46000的输入电压2.5V至 5.5V，支持3.3V、5V或12V多种隔离输出电压，最大输出功率可达3W；Si8631的通讯速率高达150Mbps，可以满足信号的高速通讯需求。
纳芯微电子（NOVOSENSE）信号感知芯片/隔离与接口芯片/驱动与采样芯片选型指南（中文）
型号- NCA1051,NSI6601B-DSPR,NSI6622B-DSWKR,NSI1303M0X,NSL2163X系列,NSI8221WX,NSI8220CX-DSPR,NSM2017,NSI6801MB-DSWVR,NCA1021-Q1SPR,NSM2013,NIRS485,NSM2015,NSI8240NX,NSM2016,NSC9260X,NSI6622C-DSWR,NSD1015T-Q1SPR,NSD1624-Q1SPR,NSM2011,NSM2012,NSD2621C-DQAGR,NSR33XXX,NSC9262,NSC9260,NSIP8944,NSIP8822,NSIP8943,NSIP8821,NSIP8942,NSIP8820,NSIP8941,NSC9264,NSI6801M,NSIP8940,NSI6602A-DSWKR,NSP1830,NSG65N15K-DQAFR,NST112X,NCA1042,NSI6801,NCA1042-Q1DNR,NSI8266SX,NSD1624-DSPKR,NSP1833,NST7719,NSP1832,NSI826XC,NSA2860X,NSI6642C-DSWKR,NSD1025E-Q1HSPR,NSIP892X,NSD1025-Q1HMS,NSD11416-Q1STBR,NSI6602MC-Q1SWTR,NCA3491,NSI8220WX,NSI8266WX,NSI6602MF-DSWTR,NSI6602VA-DSWKR,NSI6801X,NSIP89XX系列,NSM2031,NSD1015MT-Q1SPR,NSD7310A-DHSPR,NSI1052-DSWR,NCA1145-Q1SPKR,NST112-DSTR,NCA1043-Q1DNKR,NSI68010B-Q1SWAR,NSD1015T,NSIP8922,NSI6602NA-DSWKR,NSI6602C-Q1SPNR,NSI6801C-DSPR,NSIP8921,NSI8100W,NSIP8920,NSD1015MT-DSPR,NSI8100N,NSPGS2,NCA34XX,NCA3485,NSI6602VB-DSWR,NST1002,NSPGS5,NSI6602V,NST1001,NSI8242SX,NSR31系列,NSI6631ASC-Q1SW,NSD16241-Q1SPR,NSI6602N,NSI6602NC-DSWR,NSM3011,NSI6602M,NIRSXX,NSM3013,NSM3012,NSD1025-Q1HMSR,NSA2862X,NSI8210CX-DSWVR,NSI1200,NSD5604N,NSIP1042,NSI6602VA-DLAR,NSI1200C,NSD5604E,NIRSP31,NST175,NSIP8840WX,NSI6622A-Q1SPNR,NST1075,NSI8242NX,NSPGM1系列,NSI1311,NSI1312,NSI8230CX-DSWR,NSP1631,NSP1632,NSP1630,NSI8241CX-DSWR,NSA3180T,NSI6602VC-DSWR,NSI68515LC-DSWR,NSI6631ASC-DSWR,NCA1042-Q1SPR,NSD2621,NSIP83086,NSI6602A-DLAR,NSI6642A-DSWR,NSI6602VB-DSPNR,NSI6622B-DLAR,NSI68010B-DSWAR,NSI8222WX,NSPGM2,NSPGM1,NSD5604N-DHTSPR,NSD1624-DLAJR,NSI8241NX,NSPGM2系列,NSR35XXX,NSPAS3M系列,NSD5604N-Q1HTSPR,NSI6602VC-DSPNR,NSI6601MC-Q1SWV,NSE5702,NSD12416‒ Q1,NSE5701,NSD8306‒ Q1,NSI6602NC-DSPNR,NSI8260CX-DSWR,NSD16241-DSPKR,NSI1400,NSD1025E-DHMSR,NSI826X,NSD11,NSI8221NX,NSD1025E-DHMS,NSI6601C-DSPR,NSI6602VC-DSWKR,NSI6801C-DSWFR,NSI1050-DDBR,NSI1042-DSWVR,NSI6602B-Q1SPNR,NSC6272,NSD8310-Q1HTSXR,NSC6273,NSI8221CX-DSWVR,NSA5312,NSI6602MC-DSWTR,NSI6602C-DSPNR,NSI8210NX,NSI6622C-Q1SWR,NSD5604NE,NSD1025E-DDAER,NSI6602VA-DLMAR,NSI8261CX-DSWR,NSP1831A,NSI1300,NS18B20,NCA9511,NSP1831B,NSC6280,NSI1306,NSI1305,NSI1303,NST112,NST235,NSI8220NX,NSI6651ASC-Q1SWR,NST117,NST118,NSD1624,NSD16242-Q1SPR,NSI8222CX-DSWR,NSIP88XX,NSP163X,NCA1043-Q1SPKR,NSI6642A-DSPNR,NSA3182,NSI1303D2X,NSI8240CX-DSPR,NSA3180,NSI6651ALC-DSWR,NIRS2X,NSI6801B-DSPR,NSI68515RC-DSWR,NSI6622C-Q1SPNR,NSI822X,NSI6801LC-DDBR,NSG65N15K,NSI8240,NSD12409-Q1SPR,NSI8241,NSI6631ASC-Q1SWR,NSI6622B-Q1SPNR,NSI6602B-DSPNR,NCA1051N,NSI8242,NSI8220CX-DSWVR,NSI6601M,NIRS20N1-DSPR,NIRS21N1-DSPR,NSI68515UC-DSWR,NSI6622A-DSWKR,NSI22C1X,NSIP89XX,NSI6601WC-DSWVR,NSI8230,NSI6622C-DSWKR,NST461,NSI6601MC-DSWVR,NSI8231,NST103,NSI1042-DSWR,NSIP884X,NSD16242-DSPR,NCA9555,NSD1025E-Q1HMSR,NSIP88XX系列,NSI1303E2X,NSI1303D0X,NSC6360,NSC6362,NSI6601MC-DSPR,NSC6364,NSI824X,NSI6602A-DSWR,NSA3166,NSI8100NC,NSI8262,NSI8263,NSI8260,NSI68515,NSI8261,NSI8266,NSI6622A-Q1SWR,NSI6611ASC-DSWR,NSD1624-DSPR,NSI6602C-DLAR,NSI8222NX,NSI22C11,N-SI824XC,NST20,NIRS31,NCA9545,NCA9546,NSIP8844,NSI6602A-Q1SPNR,NSIP8843,NCA9306,NCA9548,NSIP8842,NSD12416-Q1SPR,NSIP8841,NSI22C12,NSIP8840,NSI823X,NSI6601MB-DSWVR,NSI6602NA-DLAR,NSI68011C-DSWAR,NSI6622B-Q1SWR,NSI6622B-DSWR,NSD8308-Q1HTSXR,NCA9617A,NST1001HA,NSP163X系列,NSIP882X,NSIP894X,NSD7310-DHSPR,NSPDSX系列,NSD731X-Q1,NSI1303E0X,NSR7808GXX,NSD7312-Q1HSPR,NSA3300,NSC2860X,NSI8222CX-DSPR,NSD1025-Q1HSPR,NSI6642C-DSWR,NCA1051N-DSPR,NSD5604NE-DHTSTR,NSL2163X,NST86,NSI6602VG-DLAR,NSI6622B-DSPNR,NSI6642C-DSPNR,NIRS31-DSSR,NSI6602C-DSWR,NSIP8921WX,NSI8221CX-DSWR,NSIP8944WX,NSA2200,NSD1025E-Q1HMS,NSE11409,NSI6611ASC-Q1SWR,NSPGD1,NSR31,NSR35,NSI1050-DSWR,NSR33,NSD731X,NSD8308,NIRSP31V,NSI6602B-DLAR,NSI6602C-Q1SWKR,NSI6602A-DSPNR,NSI6651ASC-Q1SW,NSI6622A-DSWR,NSD1624-Q1SPKR,NSI8222,NSI8220,NSI8100,NSI8221,NSIP8822WX,NSD8310,NST60,NSD8312,NSI8240CX-DSWR,NSIP8920WX,NSIP8943WX,NSD12409 ‒ Q1,NSL21630,NSL21631,NSD5604-DHTSPR,NSA2302,NSI8222CX-DSWVR,NSA2300,NSD2621B-DQAGR,NSI8210,NSI8262CX-DSWR,NSI8266CX-DSWR,NSI6622B-Q1SWKR,NSI6801MC-DSWVR,NSI6602B-DSWKR,NSI6801TB-DDBR,NSI8261WX,NSI6602NA-DSPNR,NSI6602NB-DSWR,NSIP83086C,NSI6642B-DSWKR,NSD1015T-DSPR,NSI68515AC-DSWR,NSI3190,NSI6602NA-DSWR,NSI6611ASC-Q1SW,NSL21610,NSI6602VA-DSPNR,NCA1042-DSPR,NSI6622A-Q1SWKR,NSL21611,NSIP83086V,NSI6602NB-DSWKR,NCA9534B,NSI6602VB-DSWKR,NSI6622A-DLAR,NSI6602MB-Q1SWTR,NSI6651ALC-Q1SW,NSI8260WX,NSP183X系列,NSI8210DX,NSPAS1,NIRS22N1-DSPR,NSPAS3,NSIP8922WX,NS18B20L,NSI6602MB-DSWTR,NSA9260X,NSI6801B-DSWFR,NSD1025E-DSPR,NSI6651ASC-DSWR,NSI822XC,NSI6651,NSI8240WX,NSI8261SX,NSI8263WX,NSI8221CX-DSPR,NSIP8842WX,NSI1312S,NSI66X2,NCA1145-Q1,NSI6602NC-DSWKR,NSI1300D05,NSD7312A-Q1HSP,NCA1042-Q1,NSIP8940WX,NSI1312D,NSI1306M25,NSI83086E,NSI8308XE,NSI8263CX-DSWR,NSI6601C-DSWVR,NSD1025-Q1HSP,NSPAS1系列,NSD1025E-Q1HS,NSI1305M25,NSD7312-DHSPR,NSI8262WX,NST1413,NST1412,NSI6602B-Q1SWKR,NSD8306-Q1HTSXR,NSA3162T,NSI8260SX,NSD2621A-DQAGR,NSIP8841WX,NSI6602C-DSWKR,NSR31XXX,NSPGS5系列,NSI1300D25,NSI6602A-Q1SWR,NCA1051-DSPR,NSI1306M05,NSI6622C-DLAR,NSI68011C-Q1SWAR,NSI6601MB-DSP
选用隔离变压器DC/DC芯片做隔离电源设计时，要求单电源5V供电，输出功率2W~3W给变压器，请问是否有合适型号推荐？
推荐SGM46000XPS8G/TR是一个集成初级侧控制器和H桥驱动隔离变压器DC/DC芯片，可用于隔离电源设计。其特点如下：• 用于隔离电源，可提供高达3W输出功率给变压器• 单电源2.5V~5.5V宽工作电压范围• 内部电阻器可编程振荡器模式• 带有看门狗的外部时钟模式• 禁用模式• 欠压锁定功能• 热关机• -40℃~125℃• 绿色SOIC-8封装
有没有正电压转成负电压的稳压芯片，较为好用，求推荐
SGMICRO的SGM46000可以通过简单设计，实现正压转负压，请参考www.sekorm.com/doc/64165.html
【经验】隔离型DC-DC SGM46000作为隔离电源方案的设计指导
在电源项目设计中，由于系统需求要求驱动侧以及功率侧做隔离处理，通常的方式是使用隔离电源去设计，这样的成本较高。本文介绍圣邦微电子的隔离型DC-DC SGM46000作为隔离电源方案，这样做的成本较低，且方案设计简单。
【应用】小体积电源隔离芯片SGM46000成功应用于麦克风音频隔离电路，驱动能力达到3W
麦克风信号的采集电路，容易给音响带来很大的电流声，是由于麦克风小信号地信号遭到了干扰，在部分场所会被后端的效果器采集，放大输出到音箱。每个包厢的环境不一样，每个包厢使用的后端效果器也可能不一样，市场上就会出现很多的差异性，为了规避这个问题，笔者通过使用圣邦微SGM46000来达到隔离的目的。SGM46000可支持的输入电压是2.5V~5.5V，外部配合变压器可以实现隔离电源的降压、升压、负压。
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可加工线路板层数：1~10层；最小孔径：0.2mm；孔径公差范围：±0.076mm（±3mil），板尺寸：5mm×5mm~600mm×600mm；板厚：0.2mm±0.08mm~2.0±0.1mm。
最小起订量： 1 提交需求>
可来图定制均温板VC尺寸50*50mm~600*600 mm，厚度1mm~10mm，最薄0.3mm。当量导热系数可达10000W/M·K，散热量可达10KW, 功率密度可达50W/cm²。项目单次采购额需满足1万元以上，或年需求5万元以上。
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授权代理品牌：接插件及结构件
授权代理品牌：部件、组件及配件
授权代理品牌：电源及模块
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授权代理品牌：电工工具及材料
授权代理品牌：机械电子元件
授权代理品牌：加工与定制
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