【经验】SI8931兼容ACPL-C87BT做电压采样电路设计的注意事项
目前市场的电源产品在做电流采样或者电压采样时,往往会选择高精度的采样芯片来做设计,比如AVAGO公司的ACPL-C87BT采样精度可以做到±0.5%,提供高的采样精度可以带来更好的系统调节和精确度;另外采用芯片做设计的方法,相比霍尔的采样方式,利于产品体积的小型化。SILICON LABS推出的隔离采样芯片SI8931完全可以兼容ACPL-C87BT的设计,精度可以做到0.3%,在做采样电路设计时可以为设计者提供一种多的选择。
图1是SI8931的采样电路设计图,图2为ACPL-C87BT的采样电路设计图;两者设计上都是先采电阻的电压然后通过芯片内部隔离传输,差分输出,然后经过差分运放将电压信号放大,再由模数转换ADC送到MCU进行信号处理。
具体在做两个芯片的设计电路兼容时需要注意如下:设计上需要注意SI8931的第三脚是NC,不需要任何的电气连接;ACPL-C87BT的第三脚为SHDN,具有关断功能,即该引脚输入高电平时,输出Vout﹢为0V,而Vout﹣为2.6V;但是实际设计时可以不需要用到SHDN引脚功能,直接将SHDN和同侧的GND连到一起,这样在整个电路的设计上就可以实现ACPL-C87BT和SI8931兼容。可以为设计者提供不同芯片选择,利于解决交期及单一芯片成本高问题。
图1 SI8931典型运用图
图2 ACPL-C87BT典型运用图
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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
SL081S021 8 位高精确度超低功耗 3.3 V-5.25V 工作电压 50-200KSPS 模数转换器(ADC)
描述- SL081S021是一款8位高精度超低功耗模数转换器(ADC),适用于多种电子设备。它具备50KSPS至200KSPS的采样率,支持3.3V至5.25V的单电源供电,并具有省电模式和低功耗特性。该芯片设计用于替代ADC081S021,提供更高的能效。
型号- SL081S021,SL121S101,SL081S101,SL101S101,SL121S051,SL081S051,SL121S021,SL101S101E,SL121S101E,SL101S021,SL081S101E,SL101S051
【选型】东科半导体(DK)AC-DC交直流隔离式副边反馈开关/隔离式原边反馈开关/非隔离开关/同步整流开关芯片和充电器芯片选型指南
目录- 企业简介 AC-DC和同步整流产品线 机顶盒/家电/适配器/充电器/照明应用产品示意图 AC-DC/同步整流产品特性参数表 交直流隔离式副边反馈开关电源转换芯片 交直流隔离式原边反馈开关电源转换芯片 交直流非隔离开关电源转换芯片 交直流同步整流开关电源控制芯片 充电器芯片
型号- DK5V60R20C,DK5V45R15ST1,DK5V60R20D,45R25,DK5V45R25C,60R20,DK5V85R15S,DK5V45R25D,60R25,DK212,DK2X010,DKX036,DK5V120R10ST1,120R15,DK218,DK5V45RXXP,DKS024,DK5V45RXXM,120R10,DK5V45RXXS,DK5V100R10ST1,DK5V100R25M,45R20,DK5V85R20D,DK5V85R20C,100R05,DK5V100R25S,DK5V85R10ST1,45R15,DK5V60R15D,45R10,DK5V150R20S,100R20,DK5V45R10ST1,DK5V60R15S,DK5V100R15C,DK5V100R15D,DK5V60R30S,DK5V45R25P,DK112B,DK5V85R15D,DK5V45R25S,DKS036,DK112A,DK5V150R25ST1,DK5V85R15C,100R10,DK5V60R15C,100R15,120R05,45R05,DK5V150R15S,DK5V100RXXC,45R03,DK5V100RXXD,DK5V150R15ST1,DK5V100R25ST1,DK5V120RXXST1,DK2300,DK5V150RXXST1,DK5V85R10C,DKX012,DK5V60R25S,DK5V45R10M,DK1203B,DK5V45R10S,DK1203A,DK5V85R10D,DK5V100R25D,DK5V100R05ST1,DK5V60R25C,DK5V60R25D,DK5V45RXXC,DK5V45RXXD,DK265,DK5V85R20S,DK5V100R25C,DK5V100RXXS,DKX024,DKS012,150R15,DK5V60RXXS,DK5V45R05ST1,150R10,DK5V100RXXM,DK5V60RXXD,DK5V150R25S,DK5V100R10C,DK5V100R10D,DK5V60RXXC,DK136,DK5V45R05M,DK412,DK5V85RXXD,DKS065,DK5V85RXXC,85R05,DK935,DK938,85R03,150R25,DK5V45R20P,DK5V45R20S,DK236M,DK5V45RXXST1,DK5V85RXXST1,DK212M,DK5V120RXXM,DK224M,DK5V85R10S,DK5V150RXXS,DK5V120R20ST1,DK5V45R20ST1,DK5V100R20ST1,DK1203,DK5V45R10C,DK125,DK124,DK5V45R10D,DK245,DK5V60R10S,DK1208,DK5V100R10S,DK924,DK5V150R25M,DK5V100R10M,DK5V60R10C,DK5V60R10D,DK5V100R20C,DK5V100R20D,DK5V120R25ST1,DK5V85R25S,DK5V45R15D,DK5V45R15C,DK2100,DK112,60R03,DK2500,60R05,DKX065,DK5V100RXXST1,DK236,DK910,DK912,DK913,85R25,DK5V100R15M,DK918,DK218M,100R25,85R20,DK5V100R15S,DK5V150RXXM,DK5V85RXXS,DK5V150R10S,60R10,DK224,DK5V45R20D,60R15,DK5V45R20C,DK501,DK106,DK502,DK5V85R25D,DK5V60R20S,DK5V45R15M,120R25,DK903,DK5V100R20S,120R20,DK905,DK5V85R25C,DK5V100R15ST1,DK5V45R15S,85R15,DK5V85R15ST1,DK906,85R10,DK908,DK5V100R20M
SL101S021 10 位高精确度超低功耗 3.3V-5.25V 工作电压 50-200KSPS 模数转换器(ADC)
描述- SL101S021是一款10位高精度超低功耗模数转换器(ADC),适用于多种电子设备。它具备50KSPS至200KSPS的采样率,支持3.3V至5.25V的单电源供电,采用6引脚SOT-23封装,并具有省电模式和低功耗特性。
型号- SL081S021,SL121S101,SL081S101,SL101S101,SL121S051,SL081S051,SL121S021,SL101S101E,SL121S101E,SL101S021,SL081S101E,SL101S051
英彼森半导体(INBISEN SEMICONDUCTOR)模拟混合信号芯片产品选型指南
目录- 公司介绍 线路驱动功率放大器 高性能通信AFE及SoC芯片 LDO线性稳压器 DCDC开关稳压器 PMIC多通道电源管理 24Bits Sigma Delta ADC 16Bits SAR ADC BMS AFE 低失调、低噪声、高精密运算放大器 模拟乘法器 模拟滤波器
型号- IBSP3032,IBSP3011,IBSP3030,IBSP3052,IBSP3053,IBSP3031,IBSP305X,IBSD2016,IBS6212,IBSP3012,IBSP3013,IBSP301X,IBST8820,IBSA12X7,IBSP3243S,IBSP3021,IBSP3263,IBSP3242,HIMALAYA700,HIMALAYA300,HIMALAYA800,IBSA1277 系列,VMLD502,IBSD2722-2,IBSP3642,IBSD2723-2,IBSP3243,IBSD2722-4,IBSD2724-2,IBS6222,IBSD2723-4,IBSD2724-4,IBSP303X,IBSA1217-1/2,IBSA1237 系列,IBSA1217 系列,IBSA1217,IBSA1237-1/2,IBSA1237,HIMALAYA700S,IBSA1810,IBST6016,IBSA1277,IBSA1112,IBSA1277-1/2,IBSA1111
【应用】国产三端稳压器TL431用于反激式开关电源中,体积小,输出电流大至0.1-100mA
在反激式开关电源中,电源芯片需要采集输出端的电压,以达到调节占空比,稳定输出电压的目的,在非隔离的电源电路中,往往使用将采样电压通过辰达行的三端稳压器TL431限压,再通过光电耦合器PEC817S将电压反馈到PD芯片Si3404-A-GMR。
SLS7477 10 位高精确度高速率低功耗 3.3 V-5.25 V 工作电压 1MSPS 模数转换器(ADC)
描述- SLS7477是一款高性能、低功耗的10位模数转换器(ADC),适用于多种应用场景。它具备高精度、高速率和低功耗的特点,支持3.3V至5.25V的单电源供电,并提供了两种不同的采样率选项。该产品旨在替代ADCS7477,同时减少能耗。
型号- SLS7477E,SLS7477
【选型】精度0.3%隔离电压采样芯片SI8931D-IS4 pin to pin兼容AMC1311DWV
针对电机驱动器,变频器,UPS,伺服等工业电源,在做电流或者电压采样时,综合考虑,芯片采样的方案体积及精度上会更好,针对目前用到的AMC1311DWV,Silicon Labs推出了SI8931D-IS4完全pin to pin兼容的AMC1311DWV,SI8931D-IS4精度0.3%优于AMC1311DWV的1%,设计上完全可以实现Pin to Pin兼容,性价比上有优势。
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;
SL2365 12 位超低功耗单通道 3.3 V – 5.25 V 工作电压 1000 KSPS 模数转换器(ADC)
描述- SL2365是一款12位超低功耗单通道模数转换器(ADC),适用于多种应用场景。它提供两种版本:SL2365支持4V-5.25V单电源供电,最高采样率为800KSPS;SL2365E支持3.3V-4.8V单电源供电,最高采样率达1000KSPS。该产品具备低功耗、高精度、小尺寸等特点,广泛应用于通信系统、数据采集系统等领域。
型号- SL2365,SL2365E,SL2365 系列
【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。
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品牌:SILICON LABS
品类:Wireless Gecko SoC
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现货: 102,628
品牌:SILICON LABS
品类:Mighty Gecko Multi-Protocol Wireless SoC
价格:¥27.0929
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品牌:SILICON LABS
品类:Switch Hall Effect Magnetic Position Sensor
价格:¥2.2924
现货:126,000
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加工精度:精密平面磨床正负0.002;铣床正负0.02,ZNC放电正负0.01。CNC加工材料:铝、钢、聚合物等材料。专注于半导体行业、医疗器械、汽车行业、新能源行业、信息技术行业零部件加工。
最小起订量: 1个 提交需求>
可自由定制铜排形状尺寸;检测精度:0.5%~1.0;电流测量范围 ±300-500A。低噪音 (0.27mVpp);低磁力残余误差:2mV;响应性能<4μSec;支持RoHS指令 、AEC-Q200。
最小起订量: 100个 提交需求>
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