【经验】如何使用隔离放大器在高共模电压下测量小电压信号
设计人员通常需要在高共模电压下测量小电压,尤其是在使用电源和电机驱动时。这与使用传感器时的接地回路问题有关,这可以通过有效使用隔离放大器来解决。隔离放大器在其输入和输出之间提供电流隔离,在传输所需信号的同时可以消除共模电压。在基于传感器的监测系统中,可用来实现有效隔离。广泛应用于电源,电机控制器,远程电压感应,生物医学测量和远程数据采集等应用领域。
图1 存在高共模电压(a)和消除接地回路(b)的情况下测量小电压(需要隔离的常见应用电路)
图1(a)是用于控制电动机的典型动力驱动器。它通过改变脉冲波形到负载的占空比来控制功率,电源电压(HV+和HV-)大约为几百伏。分流电阻上的电流检测电压RSHUNT大约为10毫伏,但它依赖于在HV+和HV-之间摆动的脉冲波形,若将此电压施加到接地仪表或电流检测放大器的输入端将超过共模电压限制并可能破坏器件。
图1(b)信号通过同轴电缆从左侧的发射器连接到右侧的接收器。来自其他电路的杂散接地电流可以找到通过连接两个接地的同轴屏蔽的返回路径。这些会在电缆屏蔽串联阻抗上产生电压,导致VG2与VG1不同,从而导致接收器输入出错。
这两种场景都需要信号隔离。解决方案在于隔离放大器的应用。本文将讨论三种常见的隔离方法,分别是变压器耦合隔离,光耦合隔离和CMOS隔离。下文将概述三种隔离方式,并着重突出SILICON LABS的基于CMOS的隔离方案。
变压器耦合:
图2 AD202JY使用变压器耦合
变压器耦合隔离是一种古老的隔离电路的方式。本案所用的AD202JY是一款磁耦合隔离放大器,其最大隔离电压额定值为750VRMS交流,60赫兹(Hz)和1000V直流。它使用双变压器,第一个用于信号路径。第二个将25 kHz载波从输出耦合到输入侧,并且是调制器的载波。它还用于为输入部分生成双隔离电源输出。这满足了对单独隔离电源的需求。
光耦隔离:
光耦合可以在隔离放大器的输入和输出之间提供隔离。隔离放大器的输入部分驱动发光二极管(LED),其中的光由输出部分中的光电晶体管接收。该链路完全是光学的,LED和光电晶体管之间没有电气连接。该隔离放大器将出色的光耦合与Σ-Δ转换器技术和斩波稳定放大器相结合,可提供高压隔离,差分输出和200kHz带宽,并可提供多种精度(3%,1%,0.5%)。
图3 ACPL790X光耦隔离放大器功能框图
CMOS隔离:
相较与前两种隔离方案,本文更推荐CMOS的隔离方式。SI8920是世强代理的Silicon Labs推出的一款带隔离的放大器,基于Silicon Labs专有的CMOS隔离技术,其低压差分输入非常适合测量电流分流电阻上的电压或传感器必须与控制系统隔离的任何位置。可以输出差分模拟信号。与以上两种隔离技术相比,该技术可实现更高的性能,更低的应用温度,更为出色的耐老化性能,更紧密的部件匹配以及更长的使用寿命。
除此之外,Si8920还具有更低的信号延迟,使控制系统能够快速响应故障或负载变化;低失调和增益漂移可确保精度。极高的共模瞬态抗扰度意味着即使在电机驱动系统和逆变器中存在高功率开关的情况下,也能提供精确的测量。
图4 Si8920内部结构框图
结论:
无论是基于磁性,光学还是CMOS耦合,隔离放大器都是一种有效的工具,可用于测量高共模电压下的小信号,或隔离电路接地。 它们在电源,电机控制器,远程电压感应,生物医学测量和远程数据采集中得到普遍应用。
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SGMICRO(圣邦微)信号链和电源管理芯片选型指南
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目录- 公司简介 新产品列表 运算放大器和比较器 AFE 电源管理IC LED驱动器/控制器 音频和视频IC 通信用IC和射频器件 电机IC 光电传感器 信号调节外设 产品封装一览 产品索引
型号- NJM2902C,NJM2902B,NJU7076B,NJM7056,R3134,R3133,R2045,NJW2368,R1191,R5550,NJW4303,R1190,NJM2842,R3132,NJM2841,R2043,R3130,NJM2846,NJM2845,NJM2847,NJL5901AR-1,NJM5532C,NJM2901C,R5110XXX1A,R5110XXX1B,NJM393C,R5326,NJG1697EM1,R5324,R3150-A,NJU6364系列,R5560,NJU6397系列,NJW2377,NJU1206MER,NJM2855,R2051,NJM2857,NJM2856,NJW1280,NJU7098A,NJM2902CA,R5110XXX2C,R5110XXX2D,NJM390A,NJU211,R3150-B,R2061,R3150-E,NJW2344,NJM2820,R3154,R3150-F,NJM2822,R2062,R3152,NJM2821,NJW4760,RM516,NJM2823,NJM2825,NJM2828,NJG1801AKGC-A,NJM2827,NJM2829,NSNJ9200A,NJM064C,NJM391A,RS5C338A,R5106,NJU3610,R5107,R5108,R5109,R5104,R5105,NJM2151A,R3160,R5101,NJM2831,NL6010,NJM2830,NA2100,NJM2835,NL6011,NJM2837,NJM2836,NL6012,NJM2839,NJL5902R,R1155,NJG1669MD7,R1154,NJW4107,NJU72501,NJW4106,NJW4105,NJM2570A,NJW4104,NJW4100,R1150,NJM2801,NJM2804,NJM2806,NJM2805,R5528,NJM062C,R5524,R5527,R5520,NJW4109,NJG1684ME2,NJW4108,R5523,NJW4118,NJW4116,NJW4113,R1163,R1160,R1161,NJW4111,NJW4110,NJW4351,NJM2815,NJM2816,NJM12877,NJW4162A,NJU7381A,NJG1108HA8,NJM2904CA,R3114,R2025,NJM2819A,R3112,NJG1617K11,R3111,R5538,R2023,R3118,R3117,NJM2904C,R5533,R3116,NJM2904B,NJG1144KA1,R1170,R3200X064A,NJMOP177,R1173,NJM2374A,R2262,NJW1298,NJW4321,R1171,NJW4320,R1172,NJM78M00S,NJM2903C,NJU7382A,NJM084C,RN5T618,R2033,NJG1801BKGC-A,R5542,R5543,R1180,R5540,R5541,NJM2373A,NJG1657MD7,NJW2392,NJM12856,NJU7365,NJU7366,NJU7367,NJU7092A,NJM2879-H,NJU7364,NJM2748A,RP600,MUSES8832,RN5U700,RP602,RP604,RN5T614,RP605,NB7200,NJU7360,R1801,NJU7356,NJU77572,R1800,NJM41001T,RN5RZ,NJU8759A,NJU7093A,NJU6368系列,NJU7116,NJL6402R-2,NJU7118,NJU7119,NJM2505A,NJU6322系列,NJW1200,NJG1740MHH,MUSES8820,RN5VD,NJU7387,NJU72090,R1810,NJU7141,R3200X002X,NJU7384,NJU7385,NJU7386,RC5T519,NJU72097,NJU6311系列,RM590,NJU7380,NJG1730MD7,NJU9555,NJM17431,NJM2769B,NJU77550,NJU7091A,R3200X001X,NJU77552,NJU77551,NJU77554,NJU6377系列,NT1189GDAE3S,NJU9103,RC5T619X,NJU9102,NJU9101,R5117,R5114,NJM2880,R5115,R5116,NJM2882,NJM2881,R5110,NJM2884,R5111,R3121XXXXG,NJM2883,NJM2641,R5112,NJM2886,NJW1230,NJM2885,R5590,NJM2888,NJM2646,NJM2887,NL6002,R3121XXXXA,NT1191GEAE3S,NJM2407,R3121XXXXE,NJM8191,NJM8190,NJU6063,NJU7394,RM517,RV5C348B,NJU6366系列,NJG1812ME4,NJM2893,NJM2173A,NJM2892,NJM2894,NJW1241,NJW1240,NJG1812AMET-A,NJU7392,NJU6062,NJU6061,NJU6222系列,NJU77580,NJU77582,RN5RF,NJU6402B,NJM2860,NJM2862,NJM2861,NJL5909RL-4,RN5RL,NJM2864,NJM2863,RN5RK,NJM2866,NJG1682MD7,NJM2865,NJM2868,NJU7181,NJM2626,NJM2867,NJM2627,NJL5830R,RN5RT,NJL6195R,NJW2307,NJM2749A,NJM2871,NJM2870,NJG1159PHH,NJW2311,NJM2872,R3121-A,NJM2875,NJM2874,NJM2877,NJM2876,R3121-E,NJU6080,NJM2879,NJM2878,R3121-G,NJG1816K75,NJG1143UA2,NJU7640,NJM14570,NJU6311,NC2700M,NJM2288,NJM2287,RP200,NJL5513R,RS5C372A,RP201,RS5C372B,RP202,NJW1143A,NJU7630,NJU7631,NJU7632,NJM2872A,NC2701M,NJU71074,NJM8830,NSVS1231,NJM2299,NJM2059,NJM2058,NJM2872B,NJG1145UA2,NJG1814MD7,NJU8759,NJU71041,NJG1146KG1,NJMOP1772,NJU8758,NJW1142A,NJU71044,NJW4305A,NJM5532,NJM084CA,NJM8801,NJM2871A,NJL6193R-3,NJM2871B,R3120XXXXE,NJU6323,NJU6322,NJU6321,R3120XXXXA,NJU7650,NJG1186PJL-A,NJU6324,NJW1933,NJM2275,NJM2274,NJM2278,NJM1431A,NJL6407R,NJM3414A,NJL6502R-1,NJM14558,NJU7200,NJU7201,NJU7202,NJM2768B,NJU7680,RP402,NJG1151MD7,NC2600,RP400,RP401,NJU7098AF1-C,MUSES72323,NJU3719A,NS1101,NJU7670,NS1102,NJU6324系列,NJU7677,NJM78M00,NJM41005T,NJG1818K75,NJM358C,NJL5510R,NJU7222,NJU7223,NJG1648HB6,NJL6401R-3,NC2702M,NJU6377,NJU6376,NJU7221,NJL5313R,NJM082CA,NJU7211,NJU6363,NJU6360,NJU7691,NJU6367,NC2703M,NJU6366,NJU6365,NJU6364,NJU6369,NJU6368,NJU8789,NJM358CA,NJU77903-Z2,NJU7690,NJU077,R1232,NJM2586A,RN5C752,NJD3015,RN5C750,NJM064CA,NSVS1093,NJW4148,R5111XXX1A,R5111XXX1B,NJW4142,NJW4141,NJW4382,NJW4140,NJW4750T1,NJM45001,NJW4381,R1243,R5601,R5602,R1242,NJU72322,R1245,NJG1186PJL,R5111XXX2D,NJU72315,NJW4615A,NJU72750A,NJM2561B,NJG1800NB2,R1240,NJM2561A,R5111XXX2C,NJW4155,NJW4154,NJW4153,NJM13403,NJM13404,NJU7388B,NJG1739K51,R5617,R5619,R5612,R5613,NJM393CA,R5610,R5611,NJW4119,NJW4128,NJU72751A,NJW4810A,NJM2584A,NJW4122,NJW5211,NJW5210,NJW4120,MUSES72320,NJG1173UX2,NSTS9116A,NJW4152-AB,NJD3004,NJU71091T1,NJD3007,NJG1801K75,NJW4138,NJM2583A,NJW4375,R1260,NJW4133,NJW4132,NJL6195R-W,NJW4372,NSTS9117A,NJU7386A,ND1160,NJU7606,NJM2566A,NJU7600,RN5C713,NJU7601,NJU7602,RN5C711,NJW1871A,RN5C716,NJM062CA,NJW4188,NJW4187,NJU7367A,NJW4186,NJU4051B,NJW4185,NP8700,NJW4184,NJW4183,NJW4182,NJW4181,NJU7367B,R1207,NJW4190,R1208,R1205,R1206,R1200,NJU71031,NJG1127HB6,NJG1156PCD,NJMOP2277,R1203,R1204,NJU71032,R1202,NJU77806,NJG1666MD7,NJW4196,NJW4191,R1218,NJU7620,NJU4053B,NJM2060,R1210,R1211,R1214,R1215,R1212,R1213,NJM2068,NJU3711A,NJM339C,NJW4161,ND1130,NJW4160,NJG1686MHH,NR1700,NJU7610,R1225,NJU72344,NJU72343,NJU6394系列,R1223,NJU72342,R1224,NJU72341,R3150XXXXE,R3150XXXXF,NJW4177,NJU4052B,NJG1117HA8,NJW4175,NJW4172,NJW4171,NJW4170,NJU3712A,R3150XXXXA,R3150XXXXB,NJM41031,NJU7870-Z2,NJM41033,NJM8020,NJU7086,NJM2903CA,NJM41035,R5114XXX2,R5114XXX1,NJU7391A,NJU7089,R5436,R5437,R5438,NJM8021,R5439,R5432,R5433,R5434,R5435,NJG1187KG1,NJW1159,NJM2723,NJM2725
芯谷科技(Silicore)模拟和数模混合IC选型指南(英文)
目录- Company Profile Audio and Video Circuit Power Management Circuit Communication Series Circuit LNB Circuit of Satellite Receiver Capacitive Touch Key Control Circuit Clock Controller Circuit Power Tool Speed Control Circuit Leakage Protector Circuit Operational Amplifier Circuit Driver Circuit Universal Microcontroller Circuit
型号- D8051,D8052,D32F103,D8053,D32F104,D8054,D32F105,MXD2002,D4809,MXD2001,79LXX,MXD2000,D4890,D7000,D70XX,D1381,D337,D8634CF,D2068,D2587,LMV358,D1084-XX,D8600,MC34063A,D4800,D2107,D6287,D4140,D6283,D6282,D2630,D2596,D3842,D2632,78SXX,D2631,D2076,D2504A,D7368,D3845,D3846,D1302,D3843,D3844,D54123B,D55125ADA,D02,D2171,D2576HV,D358,D232,D8829,TS01S,D8543,D8544,S321,D1237,D2568,ULN2003,D3414,D34018,D54123,ULN2803,D8563,D1117-XX,B34063,D2212,WL431,D1122,D2577,D4510,D2576,WL432,D3308,D7500,79XX,D3703,ULN2803L,D75232,D9741,GS069,D5020,D2596HV,D258,D2025,D5139,D4202,D5534,D5015,D5532,D4440,D8400,D8521,D7312,D8522,D8128,D8524,D2668,D2822,D7292,TS08N,D34118,D1509,S324,D706,LDO SERIES,D8541,D2822M,D8542,D4580,78MXX,TS223B,D7050,TS223C,D3485,D3121,78XX,D1085-XX,D1507,D3524,D336-5.0,D3525,D29150,S358,D29151,TS12,79MXX,D317,D2822ML,D2761,D1675,TS223,D4147,D4145,D3211,D1671,D8227,D6208,TS06,TS04,GS016,D431L,D4560,KS4558,78LXX,D724,D723,D722,D721,D324,D2652,D4556,D2651,D321,D2650,D6211,D8631,D2538,D8632,D8634,D1721,D336-2.5,D4558,D31101
ROHM(罗姆)电源管理IC选型指南(英文)
目录- Linear Regulators Switching Regulators System Power Supply ICs Non-isolated type ACDC Controller ICs Isolated and Non-isolated Type ACDC Converter Isolated Type ACDC Converter ICs Gate Drivers Temperature Monitor Power Management Switch Wireless Power Battery Management IC Voltage Detectors (Reset ICs)
型号- BD7673AG,BU90006GWZ,BAJ0CC0FP,BD81026MUV,BA18JC5T,BD52XXFVE SERIES,BD18KA5W,BD1CIC0WHFV,BD1CIC0W,BU43XXG SERIES,BH25RB1WGUT,BD18HA3WEFJ,BD7602GUL,BU27TA2WHFV,BD82001FVJ-LB,BAJ2CC0WT,BD12IC0MEFJ-LB,BD50FA1MG-M,BD9109FVM-LB,BD15HA5WEFJ,BD50HC5MEFJ-C,BA70BC0FP,BD50FD0WHFP,BD70GA5MEFJ-LB,BD50HC5MEFJ-M,BM61M41RFV-C,BD9C301FJ,BU48XXF SERIES,BD15KA5WFP,BU1BTD2,BD30GA5MEFJ-M,BD15GC0MEFJ-LB,BD00GA5MEFJ-LB,BM2SC123FP2-LBZ,BD80C0AWFP2-C,BD50GA3WNUX,BD9P135MUF-C,BD18HC0MEFJ-M,BD46EXX1G-M,BU30TA2WNVX,BD71L4LG-1,BD30IC0W,BD95821MUV,BA50JC5T,BD70HC0WEFJ,BD00GC0MEFJ-M,BD8158FVM,BD49XXFVE SERIES,BA25BC0WFP,BD12IC0WEFJ,BD18HA3MEFJ-LB,BD53XXG-2M SERIES,BU32TD3WG,BM6112FV-C,BD87A34FVM,BM2P26CK-Z,BD30GA3W,BD90FD0W,BD52XXG-2C,BD6046GUL,BD47XXG SERIES,BD82006FVJ-M,BD10KA5WFP,BA03CC0FP,BUS1DJC0GWZ,BD433M5FP-C,BD18HC5MEFJ-M,BD90C0AFPS-LB,BU15JA2VG-C,BM2P0361K-Z,BM2P063EK-LBZ,BU30TD2,BD2066FJ-LB,BU30TD3,BAXXDD0T,BAXXDD0W,BA17805FP,BD8313HFN,BD22621G-M,BD80GA3WNUX,BDJ2FC0WFP,BH31NB1WHFV,BD2201GUL,BD6529GUL,BD750L5FP-C,BD82039FVJ,BD9D322QWZ,BD18IA5MEFJ-M,BM2P151S-Z,BD60HA5MEFJ-LB,BH29M0AWHFV,BD95514MUV,BA70BC0,BD70522GUL,BD25KA5WF,BU18JA2DG-C,BD9S200MUF-C,BD33HA5MEFJ-LB,BD3573YFP-M,BD80FD0WHFP,BD9E303EFJ-LB,BD25HA3MEFJ-M,BUXXSD2MG-M,BU29TD2,BD4271HFP-C,BD37210AMUV,BU29TD3,BD45XX1G,BD00HA5MEFJ-M,BD52XXG-2M,BD30GA3MEFJ-LB,BD9701FP,BD25GA5MEFJ-LB,BD8311NUV,BH28RB1WGUT,BU2ATD2WNVX,BU18SA4WGWL,BU32TD2WNVX,BD3539FVM,BD10IC0WHFV,BU12JA2MNVX-C,BAXXBC0,BU48XXFVE SERIES,BH18M0AWHFV,BD33C0AWFP2-C,BD9161FVM,BD18KA5WF,BD9355MWV,BD45EXX2G-M,BA17810FP,BD90C0AWFP-C,BM2P0361-Z,BD82040FVJ,BA90BC0,BD15IC0WEFJ,BD9B100MUV,BA178M07,BA178M06,BA178M09,BA178M08,BM2P241W-Z,BU34DV7NUX,BU1JTD2WNVX,BD42530EFJ-C,BD9104FVM,BD50GC0MEFJ-LB,BDJ6FD0WHFP,BA178M10,BA178M12,BA178M15,BH33RB1WGUT,BA178M10FP,BA178M18,BU46KXX2G SERIES,BD9S000NUX-C,BD90GA3MEFJ-LB,BD70FC0W,BM2P0363F,BD2069FJ-M,BU25TD3,BU25TD2,BD450M5WFP2-C,BD7F100HFN-LB,BD48XXFVE,BA178M20,BD8317GWL,BD9035AEFV-C,BA178M24,BD9P255EFV-C,BM2P051F,BD60GC0MEFJ-LB,BD3508MUV,BU46KXX2G,BD33GC0MEFJ-M,BU10TD2WNVX,BA178M10CP,BD00FC0W,BM2P101EK-LBZ,BDJ2GC0WEFJ,BU30SA4WGWL,BD81870MUF-M,BD42500G-C,BD15FD0W,BA05CC0WT,BA17810CP,BA9743AFV,BA25JC5T,BD9C401EFJ,BU25TA2WNVX,BA33DD0WT,BD30IC0MEFJ-LB,BD22641G-M,BD9B600MUV,BM2P052F,BM2P159PF,BD37A41FVM,BD50HC5WEFJ,BD87A29FVM,BD42540FJ-C,BU2JTD3WG,BD33C0AFP2-C,BM2P053F,BD33GC0MEFJ-LB,BD9874CP-V5,BU46KXX4G,BD49EXXG SERIES,BU21TD2WNVX,BD45EXX5G-M SERIES,BD25IC0W,BDJ2FC0W,BD00C0AWFP2-C,BA3259HFP,BM2P101X-Z,BA08CC0WFP,BD00FA1WEFJ,BD46EXX5G-M SERIES,BM2P054F,BDJ0GA3WNUX,BD7691FJ,BD82004FVJ-M,BD50FC0FP,BM2P060MF-Z,BD15HA5MEFJ-LB,BD50FC0W,BD60FC0WFP,BD48LXXG,BD25GA3W,BA50BC0WFP,BD18HA5WEFJ,BD9060F-C,BA15DD0WT,BA33BC0,BD2051AFJ,BU18TD2BD00HC5WEFJ,BA17809CP,BD6042GUL,BD35395FJ-M,BD80C0A,BD00FC0WFP,BD70GA3WEFJ,BHXXRB1WGUT,BD80FC0WEFJ,BD2266G-M,BM6101FV-C,BD15FD0WHFP,BD80C0AFP-C,BD82020FVJ,BD7690FJ,BD50C0AHFP-C,BDJ0GA3MEFJ-M,BD7684FJ-LB,BAJ0BC0,BA70BC0WT,BA08CC0FP,BDXXIA5,BD50C0AFP-C,BU25TD3WG,BD99950MUV,BM2P0151-Z,BD48EXXG SERIES,BM61S41RFV-C,BU32TA2WHFV,BD95601MUV-LB,BH26M0AWHFV,BD50FC0WEFJ,BU2FSA4WGWL,BM1P067FJ,BD81010MUV,BD9S201NUX-C,BD71L3SHFV,BD90302NUF-C,BD15HC5WEFJ,BD15HA3MEFJ-M,BU6652NUX,BD6528HFV,BD82032FVJ,BDXXIC0,BD00GC0WEFJ,BD9862MUV,BD52W03G-C,BD48W00G-C,BH15M0AWHFV,BU30JA2DG-C,BD91361MUV,BD33GC0WEFJ,BDJ0GA3WEFJ,BUXXSA5WGWZ,BM2P091F,BA33DD0T,BD37A19FVM,BA33DD0W,BD00IA5WEFJ,BD733L2FP-C,BD30KA5FP,BM81100MUW,BDJ2GA3W,BA33D15HFP,BA30BC0,BD2233G,BM2P092F,BD90C0AFP2-C,BU34TD3WG,BH30M0AWHFV,BD50C0AWFP-C,BD45XX1G SERIES,BA00CC0W,BD30GC0WEFJ,BM1Z103FJ,BD9060HFP-C,BD9A302QWZ,BD82044FVJ,BH2JNB1WHFV,BD9G341AEFJ-LB,BD30HC0MEFJ-LB,BM2P093F,BD00HC5MEFJ-LB,BM2P131E-Z,BD2232G,BD47XXG,BAJ0BC0W,BA30JC5T,BD18IC0WEFJ,BAJ0BC0T,BA80BC0T,BU42XXF,BA80BC0W,BU42XXG,BA178M05FP,BD800M5WFPJ-C,BD50GA3W,BD99A41F,BD12KA5WFP,BU28TD2WNVX,BD33IA5WEFJ,BM2P094F,BD49KXXG,BU13TD3,BH30RB1WGUT,BU13TD2,BA15DD0W,BD90C0AWHFP-C,BD6538G-LB,BAXXCC0,BD50HA5WEFJ,BA08CC0,BA15DD0T,BU33UV7NUX,BD733L2FP3-C,BM2P121X-Z,BM2P095F,BU45KXX4G SERIES,BA18BC0FP,BD30IA5MEFJ-LB,BU30JA2VG-C,BD8961NV,BD15HA5MEFJ-M,BD95830MUV,BU45LXX2G,BD45XX2G,BA17805CP,BA17818FP,BD9137MUV,BD70GA5WEFJ,BD48EXXG,BA25BC0,BD18GC0WEFJ,BD30FC0WFP,BD25IA5WEFJ,BD30GA3MEFJ-M,BD4XXM5W,BA00CC0WFP,BD9P205EFV-C,BD9596BMWV,BD8132FV,BD25HA5MEFJ-M,BD9536FV,BD8963EFJ,BD9326EFJ,BU28TD3WG,BD90GC0MEFJ-M,BD4XXM2W,BD50C0AW,BU45LXX4G,BD50GA3MEFJ-M,BD9B300MUV,BD80GC0MEFJ-M,BD15GA5MEFJ-LB,BD45XX5G,BU33SD2MG-M,BA178M18FP,BA25BC0FP,BA17818CP,BA178M05CP,BD18GA5MEFJ-LB,BU49XXG,BU49XXF,BDJ0GA5MEFJ-M,BHXXPB1WHFV,BU29TA2W,BD9227F,BM2P201W-Z,BD49EXXG-M,BD3575YFP-M,BDJ0GA3W,BD25KA5W,BA50BC0T,BD70GC0MEFJ-LB,BA178M18CP,BH29NB1WHFV,BU21TD3,BD30IC0MEFJ-M,BU21TD2,BU18TD3WG,BU28TA2WNVX,BD82024FVJ,BU33SA4WGWL,BD3551HFN,BD60GC0MEFJ-M,BU27TA2W,BM2P209TF,BD9B304QWZ,BU18JA2VG-C,BU33TD2,BU43XXFVE,BA05CC0FP,BDJ0GC0MEFJ-LB,BD33FD0W,BD9615MUV-LB,BM81028AMWV,BA17809FP,BDJ2GA5MEFJ-LB,BU33JA2DG-C,BM2P151X-Z,BD50FA1FP3,BU90002GWZ,BA30E00WHFP,BU33TD3,BD15GA3WNUX,BA9741FS,BA178M09FP,BD9573MUF-M,BU11TD3WG,BD81870EFV-M,BM1
AMC1200为什么常用电路推荐
AMC1200属于隔离芯的电压及电流采样芯片,可以参考Silicon Labs的SI8920的典型运用设计,属于差分式输入,输出,资料链接:https://www.sekorm.com/doc/617439.html;
虹茂半导体(HONGMAO SEMICON)电源管理IC/信号链IC产品参数选型表
目录- LDO IC 带使能LDO IC 耐高压LDO IC 带使能耐高压LDO IC 单节线性锂电充电IC 单节线性磷酸铁锂电池充电IC 镍氢/镍镉电池充电IC 太阳能供电充电IC 单节锂电保护IC 2节锂电保护IC 二合一锂电保护IC 低电压检测IC(复位IC) 看门狗电源监测IC 同步DC-DC升压IC DC-DC升压IC 电荷泵DC-DC反压IC DC-DC降压IC 耐高压DC-DC降压IC RS232接口IC DC-DC降压型LED驱动IC LED日光灯/球泡灯/台灯驱动IC 非隔离降压稳压IC(小家电电源IC) 运放IC 比较器IC 逻辑电路IC 模拟开关IC 实时时钟日历IC 直流有刷马达正反转驱动IC 全极性/单极性 低功耗霍尔IC 三端稳压IC 通用DC-DC变换IC 通用PWM控制IC 恒压恒流控制IC 电压基准源IC 同步整流IC 达林顿驱动IC
型号- HM29151,HM8805-ADJ,HM4115A,HM29152,HM5054B,NJM4580,HM5430D4,HM8100,HM8101,RT9809,HM4115MR,HM5501,TL494,SGM8541,HM7805,LM2596HV,AD8541,LM432,HM1509E,LM431,TD62084,TSM1051,HM6030,HM74HC164,NCV33204,HM5501DR,HM56XXB,NCV33201,NCV33202,HM116A,HM73XXH,HM73XXN,HM5055DR,HM4310,HM73XX,HM4313,HM4057D8,HM4051A,TD62784,TD62783,HM317,ULN2803A,HM432,HM1156,HM431,UTC324,HM4057DR,AZ358,HM75XXH,HM1509,HM62783A,LMV321,HM5056DR,ULN2804A,ILN2004A,HM3005,KID65083,HM61C/NXXXMR,KID65084,HM75XXHB,HM5052MR,MCP6001,AMS1117B,MCP6002,HM117D,LM358,LMV331,SN74HC595,HM5056ES,MCP6004,HM3232,HM5511B,LMV324,AP431,HM62784A,HM4054E,MC4560,HM4070D8,HM74HC04D,LM321,HM4056A,LM324,HM2675HVT,HM2675HVS,HM1084,HM9921,HM9922,HM462,HM9923,HM465,KID65784,HM53XXB,NJM2107,FSA3157,KID65783,TL432,TL431,TD62083,HM4055H,MC4580,HM4070DR,AP4310,HM118,LM339,HM116,HM5431,HM9910,HM5430,SN74HC245,HM232,HM74HC595D,HM5056D8,HM3139,HM4056E,MC33202,HM809,MC33201,HM54XXBM5,HM74HC245D,DW01A,HM2675HV,HM4115ES,UTC78D05A,LMV358,HM78XX,HM4056HA,AME8500,SN74HC138,HM4051AD2,HM4057E,HM4057H,JRC4558,UT81XX,S808,HM61C/NXX2,HM5056RD,SGM324,HM3157,HM5056RD8,JRC4560,HM5056RE,HM2741,HM2740,SGM321,SGM3005,LM393,SN74HC164,HM74HC138D,HM5501MR,XC61CC(N),HM4275,SGM358,HM6216,HM6214,SGM3157,MAX809,XC61FC(N),AZ324,LM258,ULN2003A,HM7660,LMV393,MC34063,HM56XXBM5,HM4024,HM1509HV,HM6206,NJM456,ILN2003A,HM54XXB,HM4051ADR,HM6208,HM73XXHB,HM1558,HM78XXM5,ULN2004A,LM2904,TSM103,HM5430D,HM8541,HM6235,HM4056,HM6234,HM4057,HM74HC595DT,HM4054,PCF8563,TS924,TS922,TD62003A,TS921,LM2596,MCP6404,HM78L05,MCP6401,MCP6402,HM6226,AIC1680,SN74HC04,TD62004A,LM2576HV,L9110E,L9110,HM8563,HM74HC245DT,HM6382,HM75XX,UTC358,LM4558,IMP809,UC3842,UC3843,IK62783,IK62784,HM4070,HM78M05,HM5208FM,HM6245,HM5155,HM1232,HM1234,DW03,JRC4580,HM1235,HM809系列,UTC4558,MC33204
【应用】PFC电流检测的低成本方案:带隔离的电流采样芯片SI8920,高精度、小体积
目前的PFC设计通常需要检测环路的电压及电流,使效率达到最高化,对于PFC的电流检测方法通常会涉及到隔离问题,用带隔离的电流检测芯片会更好,Silicon Labs推出的SI8920具有高精度,小体积,低成本的优势非常适合PFC的电流检测芯片。
变频器电机相电流检测方案采用电流检测电阻R(SENSE)+HCPL-7840电流检测光耦实现,想更换一款可pin to pin替代HCPL-7840的隔离器件,请问是否有合适型号推荐?
推荐Si8920BC-IP隔离容耦,有SOIC-16宽体封装和DIP8表面封装两种选择,其中DIP8封装可pin to pin替代HCPL-7840,产品特点如下:1、低压差分输入范围:±200mv;2、低信号延迟:仅0.75μs;3、输入失调电压0.2mv;4、增益误差<0.5%;5、卓越的漂移规格:1 μV/°C失调漂移、60 ppm/°C温度漂移;6、全数值范围内非线性误差:0.1%;7、高共模抑制75kv/μs;8、工作温度:-40℃~ +125℃;9、通过AEC-Q100认证。
Nisshinbo(日清纺)电子器件选型指南(英文)
目录- Company Profile Electronic Devices Products Lineup Operational Amplifiers Sensor Measurement AFEs Power Management ICs LED Driver/Controller Audio & Video ICs Communication ICs & RF Devices Motor ICs Optoelectronic Devices Signal Conditioning Peripherals SAW Filter MEMS Microphone Elements Package Information
型号- NJM2902C,NJU7076B,NJU6367 SERIES,R3134,R3133,R2045,R1191,R5550,NJW4303,R1190,NJM2842,R3132,NJM2841,R2043,R3130,NJM2846,NJM2845,NJM2847,NJL5901AR-1,NJM5532C,NJM2901C,R5110XXX1A,R5110XXX1B,NJM393C,R5326,NJG1697EM1,R5324,R5560,NJU6227 SERIES,NJU1206MER,NJM2855,R2051,NJM2857,NJM2856,NJU7098A,NJM2902CA,R5110XXX2C,R5110XXX2D,NJM390A,NJU211,NJU9252P,R2061,R3154,NJM2820,R3152,NJM2822,NJU6397 SERIES,R2062,NJM2821,NJM2823,NJM2825,NJM2828,NJM2827,NJM2829,NSNJ9200A,NJM064C,NJM391A,R5106,R5107,NJU3610,R5108,R5109,NJU7221 SERIES,R5104,R5105,NJM2151A,R3160,R5101,NJM2831,NJM2830,NJM2835,NJM2837,NJM2836,NJU9102A,NJL5902R,NJG1131HA8,R1155,NJM78L,NJG1669MD7,R1154,NJM78M,NJW4107,NJW4106,NJU72501,NJW4105,NJW4104,NJM2570A,R1150,NJW4100,NJM2801,NJM2804,NJM2806,NJM2805,NJU7202 SERIES,R5528,NJM062C,R5524,R5527,R5520,NJW4116T1,NJG1684ME2,NJW4108,R5523,NJG1801AKG-CA,R1163,R1160,R1161,NJW4111,NJW4110,NJW4351,NJM2815,NJW4350,NJM2816,NJM12877,NJW4162A,NJU7381A,NJG1108HA8,NJG1801BKG-CA,NJM2904CA,R3114,R2025,NJM2819A,R3112,NJG1617K11,R3111,R5538,R2023,R3118,R3117,NJM2904C,R3116,R5533,NJG1144KA1,R1170,R3200X064A,NJMOP177,R1173,NJM2374A,R1171,NJW1298,NJW4321,R1172,NJW4320,NJM78M00S,NJM78,NJM2903C,NJU7382A,RN5T618,R2033,R5542,R5543,R1180,R5540,R5541,NJM2373A,NJG1657MD7,NJM12856,NJU7365,NJU7366,NJU7367,NJU7092A,NJM2879-H,NJU7364,NJM2748A,RP600,MUSES8832,RN5U700,RP601,RP602,RP604,RN5T614,RP605,NUU72315,NB7200,NJU7360,R1801,NJU77572,NJU7356,R1800,NJM41001T,NJU8759A,NJU7093A,NJU77578,NJW4118T1,NJU7116,NJL6402R-2,NJU7118,NJU7119,NJM2505A,NJW1200,NJU6323 SERIES,NJG1740MHH,MUSES8820,NJU72090,RN5VD,NJU7387,R1810,NJU7141,R3200X002X,NJU7384,NJU7385,NJU7386,NJU72097,RM590,NJU6394 SERIES,NJU7380,NJG1730MD7,NJU9555,NJM17431,NJM2769B,NJU77550,NJU9556,NJU7091A,R3200X001X,NJU77552,NJU77551,NJU77554,NJU9103,RC5T619X,NJU9102,NJU9101,R5117,NJM2880,R5116,NJM2882,NJM2881,NJM2884,R3121XXXXG,R5112,NJM2883,NJM2150A,NJM2641,NJM2886,NJW1230,NJM2885,R5590,NJM2888,NJM2646,NJM2887,R3121XXXXA,NJM2407,R3121XXXXE,NJM8191,NJM8190,NJU6063,NJU7394,RV5C348B,RX5RZ,RX5RW,NJG1812ME4,NJM2893,NJM2173A,NJM2892,NJM2894,RX5RL,NJG1148MD7,NJW1241,NJW1240,NJG1812AMET-A,NJU7392,NJU6062,NJU6061,NJU77580,NJU77582,RN5RF,NJU6402B,NJM2860,NJM2862,NJM2861,NJL5909RL-4,NJM2864,NJM2863,RN5RK,NJM2866,NJG1682MD7,NJM2865,NJM2868,NJU7181,NJM2626,NJM2867,NJM2627,RN5RT,NJM2390A,NJL6195R,NJW2307,NJM2749A,NJM2871,NJM2870,NJG1159PHH,NJW2311,NJM2872,NJM2875,NJM2874,NUSES72320,NJM2877,NUSES72323,NJM2876,NJU6080,NJM2878,NJG1816K75,NJG1143UA2,NJU7640,NJM14570,NJU6311,NJU6365 SERIES,NJU6324 SERIES,NSVS1245,NSVS1246,NJM2288,NJM2287,RP200,NJL5513R,RS5C372A,RP201,RS5C372B,RP202,NJW1143A,NJU7630,NJU7631,NJU7632,NJM2872A,NJU71074,NJM2292,NSVS1231,NJM2294,NSVS1237,NJM2299,NJM2059,NJM2058,NJU6229 SERIES,NSVS1240,NJM2872B,NJG1145UA2,NJU3716A,NJU8754,NJG1814MD7,NJU8759,NJU71041,NJU71042,NJG1146KG1,NJU6450A,NJU6376 SERIES,NJMOP1772,NJU8758,NJW1142A,NJU71044,NJW4305A,NJM5532,NJM8801,NSVS1271,NJM2871A,NJL6193R-3,NJM2871B,NJU3715A,R3120XXXXE,NJU6323,NJU6322,R3120XXXXA,NJU6321,NJU7650,NJU6324,NJW1933,NJM2275,NJM2274,NJM2278,NJM1431A,NJL6407R,NJM3414A,NJL6502R-1,NJM14558,NJU7200,NJU7201,NJU7202,NJM2768B,NJU6350,NJU7680,NJW1504,RP402,NJG1151MD7,NC2600,RP400,RP401,NJU7098AF1-C,NJU3719A,NJU7200 SERIES,NJU7670,NJU7677,NTU8759A,NJM41005T,RX5C338A,NJM358C,NJL5510R,NJU7222,NJU7223,NJG1648HB6,NJW1146A,NJL6401R-3,NJU6377,NJU6376,NJU7221,NJL5313R,NJU6363,NJU6360,NJU7691,NJU6367,NJU6366,NJU6365,NJU6364,NJU6369,NJU6368,NJU8789,NJM358CA,NJU77903-Z2,NJU7690,R1232,NJM2586A,RN5C752,RN5C750,NJM064CA,NSVS1093,R5111XXX1A,R5111XXX1B,NJW4142,NJW4141,NJW4140,NJW4382,NJW4750T1,NJM45001,NJW4381,NJL5311R,NJU7222 SERIES,R1243,R5601,R5602,R1242,NJU72322,NJU6321 SERIES,R1245,R5111XXX2D,NJW4615A,NJU72750A,NJM2561B,NJG1800NB2,R1240,NJM2561A,R5111XXX2C,NJW4155,NJW4154,NJL5312R,NJW4153,NJM13403,NJM13404,NJU7388B,NJG1739K51,NJU6222 SERIES,R5617,R5612,R5613,NJM393CA,R5610,NJW4119,R5611,NJW4128,NJU72751A,NJW4810A,NJM2584A,NJW4122,NJW5211,NJW5210,NJW4120,NSTS9116A,NJD3006,NJW4152-AB,NJD3004,NJU71091T1,NJG1801K75,NJD3007,NJW4138,NJM2583A,R1260,NJW4133,NJW4375,NJW4132,NJU6360 SERIES,NJL6195R-W,NJW4372,NSTS9117A,NJU7386A,NJL5310R,NJU7606,NJM2566A,NJU7600,RN5C713,NJU7601,NJU7602,RN5C711,NJU6515,RN5C716,NJM062CA,NJW4188,NJW4187,NJU7367A,NJW4186,NJU4051B,NJW4185,NJW4184,NJW4183,NJW4182,NJW4181,NJU7367B,R1207,NJW4190,R1208,R1205,R1206,NJU7325A4:K17,R1200,NJU71031,NJG1127HB6,NJG1156PCD,NJMOP2277,R1203,R1204,NJU71032,R1202,NJU77806,NJG1666MD7,NJW4196,NJW4191,R1218,NJU6532,NJU4053B,NJM2060,R1210,R1211,R1214,R1215,R1212,R1213,NJM2068,NJU3711A,NJM339C,NJW4161,NJW4160,NJG1686MHH,NJU7610,R1225,NJU72344,NJU72343,R1223,NJU72342,R1224,NJU72341,R3150XXXXE,R3150XXXXF,NJW4177,NJU4052B,NJW4175,NJG1117HA8,NJW4171,R3150XXXXA,NJW4170,NJU3712A,R3150XXXXB,NJM41031,NJM41033,NJM8020,NJU7086,NJM2903CA,NJM41035,R5114XXX2,R5114XXX1,NJU7089,NJU7391A,NJU6363 SERIES,R5436,R5437,R5438,NJM8021,R5439,R5432,R5433,R5434,R5435,NJG1187KG1,NJW1159,NJM2723,NJM2725,NJU7084,NJU7085,NJM2729,NJG1801AKGCA,NJ
【选型】隔离放大器Si8920BC-IP可替代TI AMC1200用于电动汽车充电桩电流测量
本人设计了一款AC/DC电源模块,输入三相380VAC,输出200~500VDC,0~60A,采用DSP作为主控制,稳压稳流可调输出,能够多模块并联输出。模块电流测量采用隔离放大器,选择Silicon Labs的Si8920BC-IP替代TI的AMC1200。
Silicon Labs(芯科科技)隔离技术及产品介绍
描述- 本资料主要讲述的内容是关于Silicon Labs(芯科科技)隔离技术及产品的介绍。
型号- SI86XXT,SI8285,SI8286,SI86XX,SI87XX,SI823X,SI88XX,SI8920,SI838X,SI827X,SI826X,SI875X,SI890X
Si8920 Data Sheet
型号- SI8920,SI8920BD-IS,SI8920AC-IS,SI8920BC-IS,SI8920BC-AP,SI8920AD-IS,SI8920BC-IP,SI8920B,SI8920A,SI8920AC-IP
电子商城
品牌:SILICON LABS
品类:Wireless Gecko SoC
价格:¥8.1764
现货: 103,878
品牌:SILICON LABS
品类:Mighty Gecko Multi-Protocol Wireless SoC
价格:¥27.0929
现货: 90,767
现货市场
品牌:SILICON LABS
品类:Switch Hall Effect Magnetic Position Sensor
价格:¥2.2924
现货:126,000
服务
可定制波导隔离器频率覆盖5.5GHz~110GHz,插损损低至0.25dB、隔离度、正向方向功率、封装尺寸参数。
最小起订量: 1pcs 提交需求>
可定制射频隔离器/环行器(10M-40GHz),双工器/三工器(30MHz/850MHz-20GHz),滤波器(DC-20GHz),功分器,同轴负载,同轴衰减器等射频器件;可定制频率覆盖DC~110GHz,功率最高20KW。
最小起订量: 1 提交需求>
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