NOVOSENSE‘s New Isolation Voltage Sampling Chips NSI1312x Series Support +1.2V Bidirectional Linear Input Voltage

时间： 2023-04-23 来源：NOVOSENSE News

技术问答

The NSI1312x series of isolated voltage sampling chips newly launched by NOVOSENSE support positive and negative voltage input and high impedance input, and support differential or single-terminal analog output, which can be widely used in automotive, industrial, high power supply AC and DC voltage detection.

Based on the innovative isolation technology and signal conditioning design of the microchip of NOVOSENSE, the series can provide electrical isolation capability of up to 5000 Vrms in demanding automotive and industrial applications. The CMTI of up to 150KV/μs enables high precision and low-temperature drift.

- Low-cost, two-way input

- Voltage sampling isolation operational amplifier NS11312x

- +1.2V bidirectional linear input voltage range

- High input impedance: 1MΩ

- High common mode rejection ratio: 150kV/μs

- High bandwidth, high precision

- Optional output mode: differential output or single-ended analog output

Non-isolated operational amplifier VS isolated operational amplifier

As shown in the figure above, this system adopts a typical three-phase input rectifier flow. Many customers use the sampling method shown in the figure above to collect high-voltage bus voltage -- high-resistance voltage divider + Non-isolated operational amplifier +MCU integrated ADC to achieve cost optimization.

If the non-isolated operational amplifier is adopted, improper handling or accidents may lead to high and low voltage interference, affecting the reliability of the entire system.

Advantages: Simple design, low cost

Disadvantage:

► The power circuit noise on the bus can be coupled to the control grounding, affecting the MCU operation or even damaging it.

► When the capacitors between DC+ and DC- are mismatched, the voltage between DC+ and DC- to N is unbalanced, and the common mode input of op-amp may be a negative voltage. The operational amplifier needs a negative voltage power supply, and the power supply design is complicated.

► In case of system overvoltage breakdown, such as a short circuit of the operational amplifier, the control side circuit will be damaged.

► In the case of multi-channel partial voltage sampling, it is similar to multi-channel insulation resistance in parallel. In this case, the equivalent insulation resistance becomes smaller, the leakage current of the system increases, and the system cannot meet the safety standard requirement.

Currently, the common isolated operational amplifier in the industry can eliminate the above key problems, but due to its high cost, it has become a pain point that is difficult for most customers to accept. Moreover, the commonly isolated voltage sampling in the industry does not support negative voltage input, which limits its use in AC sampling.

Lower costs and higher performance

The new low-cost isolated operational amplifier NSI1312x series launched by NOVOSENSE can greatly lower the cost through the evolution of technology. It also supports ±1.2V bidirectional linear input voltage, supports the acquisition of AC and DC voltage, and realizes phase loss detection during the acquisition of AC input. Moreover, NSI1312S supports single-end output voltage and can be directly connected to the ADC I/O port of MCU, without the need for an additional operational amplifier for transferring differential to a single end, which solves the bi-directional demand of both cost and performance for customers and provides a new standard for market competition.

Typical use cases

Summarize the advantages of the scheme

► Isolation between high and low voltages to improve system reliability

► High common mode rejection, with tolerance to the high noise environment

► High voltage isolation, with small input leakage current to meet safety requirements

► Sampling voltage is more accurate. The NSi1312D can meet the accuracy requirements of ±0.5% @25℃ and ±1.5% @-40~125℃ at full input by selecting the appropriate resistance for sampling.

► Support positive and negative voltage sampling, taking into account the incoming line phase loss detection

► Available in narrow-body small packaging and single-end output version, with simple design

Good EMI performance

With years of accumulation in the field of capacitive isolation technology and patent advantages of NOVOSENSE, NSI1312x series products have excellent EMI performance. The following figure shows the EMI experimental comparison between products of international major brands and NOVOSENSE products under the same conditions:

As you can see, the NSI1312x EMI features core advantages in both vertical and horizontal conduction.

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本文由上山打老虎转载自NOVOSENSE News，原文标题为:Low cost and high performance! NOVOSENSE launched the new isolation voltage sampling NSI1312x series，本站所有转载文章系出于传递更多信息之目的，且明确注明来源，不希望被转载的媒体或个人可与我们联系，我们将立即进行删除处理。

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型号- NSI6602NA-DLAR,NSL21924-Q1,NCA1051,NSI6602VC-Q1SWR,NSI6622NB-Q1SWKR,NCA1051N-Q1SPR,NSM2017,NSI6602NC-Q1SWR,NSM2019,NSM211X,NSI6602A-Q1SWKR,NSM2013,NIRS485,NSIP83086,NSI6622VB-Q1SPOR,NSM2015,NSM2016,NSC9260X,NSHT30-CLAR,NSD1624-Q1SPR,NSM2011,NSM2012,NSI8231,NSI8230,NSD2621C-DQAGR,NSR33XXX,NSC9262,NSC9260,NSI6801LC-DDBR,NSI6602VD-Q1SWKR,NSC9264,NSP1830,NSG65N15K-DQAFR,NST112X,NCA1042C-Q1DNR,NCA1042,NCA1042A-Q1DNHR,NSI8220NX,NSI6622A-DSWKR,NSI6801TB-DDBR,NSD1624-DSPKR,NSP1833,NST7719,NSP1831,NSP1832,NSM1052,NSM1053,NSI8222,NSA2860X,NSI8221,NSI8220,NSE5701 SERIES,NSI6642C-DSPNR,NSM1051,NSI822XC,NSIP8921W1-DSWR,NSI6602MNF-Q1SWTR,NSD11416-Q1STBR,NSI6602VB-Q1SPNR,NCA3491,NSI6642A-DLAR,NSI6602NB-Q1SWKR,NSA2860_TSSOP,NSD1026V,NSI8221CX-DSWR,NSE34050,NCA1043B-Q1DNKR,NCA1044N-Q1SPR,NSIP8944W1-DSWR,NSL21912-Q1,NSM201X,NSI6622A-Q1SPNR,NCA1051N-Q1,NSM2031,NSI6602MNB-Q1SWTR,NSD7310A-DHSPR,NSM2032,NCA1145-Q1SPKR,NSM2033,NSI8210,NSM2034,NST112-DSTR,NSI6601MB-DSPR,NSD1015T,NSI8266CX-DSWR,NSI6602VD-DSWKR,NSI8222CX-DSPR,NSM105X SERIES,NSD1015MT-DSPR,NSC2860X_DQNR,NCA1021S-Q1SPR,NSI8262CX-DSWR,NSPGS2,NCA34XX,NCA3485,NCA1051C,NSI68011C-DSWAR,NSI8221NX,NSI6602NC-DLAMR,NST1002,NSPGS5,NSM211X SERIES,NSI6602VC-DLAMR,NST1001,NCA1042C-Q1,NSI6602A-DLAR,NSI6602ND-DSWKR,NSM105X,NSD16241-Q1SPR,NSI1303M0X,NSM3011,NSPAS3M SERIES,NSI8240CX-DSPR,NSD7312-Q1,NSM3013,NSM3012,NSA2860_SSOP16,NSA2862X,NSI6642B-DSWKR,NSM1071,NSM1072,NSI823XC,NSI6642A-DLAMR,NSD5604N,NSI319X,NSI6642D-DLAR,NSI8100NC,NSI6602B-Q1SWR,NSI6622ND-DSPNR,NSI6601B-DSPR,NSA2860X-QQNR,NSI8210NX,NSI6642D-DSWKR,NSI6602MF-DSWTR,NSD5604E,NIRSP31,NSI6602MNB-DSWTR,NST175,NST1075,NSI6602A-DSPNR,NCA9617A SERIES,NSI68010B-Q1SWAR,NSI1312D,NSI6642B-DSWR,NSI8222NX,NSI6601C-DSPR,NSI6622NB-DLAR,NSIP8841W1-DSWR,NSP1631,NSI8221CX-DSWVR,NSP1632,NSP1630,NSD56008-Q1HTSPR,NSI6622C-DLAR,NSM301X,NSM107X,NSI824XC,NSI6602VA-Q1SPNR,NSI6602ND-DLAR,NSI6801C-DSWFR,NSD3604-Q1,NCA3176,NSI6801MB-DSWVR,NSD3608-Q1QAJR,NSI1312S,NSI6622VB-Q1SWR,NSI6622B-Q1SPNR,NSD5604N-DHTSPR,NSD1624-DLAJR,NSI68011C-Q1SWAR,NSI6602VA-DLAMR,NSI6602NA-DLAMR,NSI6602NB-DSWR,NSD5604E-DHTSTR,NSR35XXX,NSI6622NB-Q1SWR,NSD5604N-Q1HTSPR,NSD1224X,NSI6602C-Q1SPNR,NSI8100W,NSI6622NA-DSPNR,NSIP8844W1-DSWR,NSI6622NB-DSWKR,NSE5702,NSE5701,NSI8100N,NSP183X,NCA1044-Q1DNR,NSI6622NC-DLAR,NCA1021S-Q1DNR,NSI6622VB-Q1SPNR,NCA1044N-Q1DNR,NSD16241-DSPKR,NSI3190,NSI6602VD-DSWR,NPC060N120A-QTOOT,NSI6622NA-Q1SWKR,NSE34050Q,NSD1224LA-DAFR,NSI8241SX,NSI6622NA-Q1SWR,NSI6622NC-Q1SPNR,NSI8231CX-DSWR,NSI1052-DSWR,NSPGL1 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系列,NSI6622A-Q1SPNR,NCA1051N-Q1,NSA2860X-DQNR,NSM2031,NSI6602MNB-Q1SWTR,NSD7310A-DHSPR,NSM2032,NCA1145-Q1SPKR,NSM2033,NSI8210,NSM2034,NSI6601MB-DSPR,NSD1015T,NSI8266CX-DSWR,NSI6602VD-DSWKR,NSI8222CX-DSPR,NSD1015MT-DSPR,NCA1021S-Q1SPR,NSI8262CX-DSWR,NSPGS2,NCA34XX,NCA1051A,NCA3485,NCA1051C,NSI68011C-DSWAR,NSI8221NX,NSI6602NC-DLAMR,NST1002,NSPGS5,NSI6602VC-DLAMR,NST1001,NCA1042C-Q1,NSI6602A-DLAR,NSI6602ND-DSWKR,NSM105X,NSD16241-Q1SPR,NSI1303M0X,NSM3011,NSI8240CX-DSPR,NSM3013,NSM3012,NSA2862X,NSA2860_SSOP16,NSI6642B-DSWKR,NSM1071,NSM1072,NSI823XC,NSD5604N,NSI6642A-DLAMR,NSI6642D-DLAR,NSI8100NC,NSI6602B-Q1SWR,NSD1026V-Q1SPR,NSI6622ND-DSPNR,NSI6601B-DSPR,NSA2860X-QQNR,NSI8210NX,NSI6642D-DSWKR,NSD5604E,NSI6602MF-DSWTR,NIRSP31,NSI6602MNB-DSWTR,NST175,NST1075,NSI6602A-DSPNR,NSI68010B-Q1SWAR,NSI1312D,NSI6642B-DSWR,NSI8222NX,NSI6601C-DSPR,NSI6622NB-DLAR,NSIP8841W1-DSWR,NSA2862X-DQNR,NSP1631,NSI8221CX-DSWVR,NSP1632,NSE34140,NSP1630,NSD56008-Q1HTSPR,NSI6622C-DLAR,NSM301X,NSM107X,NSI824XC,NSI6602VA-Q1SPNR,NSI6602ND-DLAR,NSI6801C-DSWFR,NCA3176,NSI6801MB-DSWVR,NSD3608-Q1QAJR,NSI1312S,NSI6622VB-Q1SWR,NSI6622B-Q1SPNR,NSD5604N-DHTSPR,NSD1624-DLAJR,NSD3604,NSI68011C-Q1SWAR,NSI6602VA-DLAMR,NSI6602NA-DLAMR,NSI6602NB-DSWR,NSD5604E-DHTSTR,NSR35XXX,NSE34140 系列,NSI6622NB-Q1SWR,NSD5604N-Q1HTSPR,NSD1224X,NSI6602C-Q1SPNR,NSI8100W,NSI6622NA-DSPNR,NSIP8844W1-DSWR,NSI6622NB-DSWKR,NSE5702,NSE5701,NSI8100N,NSP183X,NCA1044-Q1DNR,NSI6622NC-DLAR,NCA1021S-Q1DNR,NSI6622VB-Q1SPNR,NCA1044N-Q1DNR,NSD16241-DSPKR,NSI3190,NSI6602VD-DSWR,NPC060N120A-QTOOT,NSI6622NA-Q1SWKR,NSE34050Q,NSE4253 系列,NSD1224LA-DAFR,NSI8241SX,NSI6622NA-Q1SWR,NSI6622NC-Q1SPNR,NSI8231CX-DSWR,NSI1052-DSWR,NSI6622VA-Q1SPOR,NSI6801B-DSWFR,NSP183X 系列,NSI6602B-Q1SPNR,NSI6601WC-DSWVR,NSI6651ASC-Q1SWR,NSC6272,NSI8263CX-DSWR,NSD8310-Q1HTSXR,NSC6273,NSREF31XX,NSI6622ND-DSWR,NSI6622NC-DSPNR,NSI1042C-DSWVR,NSI6602NB-DLAR,NSI6602NB-DSPNR,NSA5312,NSI6622VC-Q1SWKR,NSPGL1,NSI6602A-Q1SWR,NSI6622NC-Q1SPOR,NSI6642C-DLAMR,NSI6601MC-DSWVR,NSD56008-Q1,NSI8220WX,NSI8266WX,NSD5604NE,NSI6622VA-Q1SPNR,NSI6602VB-DSWKR,NCA1042BN-Q1SPR,NCA1057-Q1SPR,NCA1043B-Q1,NCA9511,NSI6602A-DSWR,NSC6280,NSI6602NA-Q1SWKR,NSI6602NC-DSWR,NSI6801TC-DDBR,NSI8242SX,NSI68515AC-DSWR,NST112,NSI6602B-DSWKR,NSI6602VD-DLAMR,NSI8220CX-DSWVR,NSI6622NB-DSWR,NST235,NST117,NSI6602VC-DSWKR,NSI6602VC-Q1SWKR,NSI6602MB-DSWDR,NST118,NSD16242-Q1SPR,NCA3085,NSI1050C-SWR,NCA1044-Q1SPR,NSI6651,NSI6601MB-DSWVR,NSI6642B-DLAMR,NSI6602C-DSWKR,NSI8240NX,NCA1057N-Q1DNR,NSP163X,NSI6602NC-DSPNR,NCA1042BN-Q1,NSI8221WX,NSI66X2,NSI6631ASC-Q1SWR,NSP163X 系列,NSI1050C,NSI6602MNC-DSWTR,NCA1042B-Q1DNR,NSI6642,NSI6601C-DSWVR,NIRS2X,NSI8266SX,NSI6602NB-Q1SPOR,NSI6602NC-Q1SPOR,NSG65N15K,NSI6622ND-DLAMR,NSD12409-Q1SPR,NCA1042CN-DSPR,NSI6602VA-DSWKR,NSI6642D-DLAMR,NCA1051N,NSI6642A-DSWKR,NIRS20N1-DSPR,NIRS21N1-DSPR,NSI6622NA-DLAR,NSC2860X-DQNR,NSI1042-DSWVR,NCA1042C-Q1SPR,NSI6602C-DSWR,NCA1057-Q1DNR,NSI8221CX-DSPR,NPD010N120A-DTOGT,NSI6602VB-Q1SWR,NSI8210CX-DSPR,NSI8241NX,NSI6602NC-Q1SPNR,NCA1042BN-Q1DNR,NST461,NSD2621X,NCA1042A-Q1,NSI8222WX,NST103,NSI1303D0X,NSI1303E2X,NSI6622A-Q1SWKR,NSI6602VC-DLAR,NSD16242-DSPR,NCA9555,NSI1052,NSC6360,NSC6362,NSI6622NB-DLAMR,NSI6651ALC-DSWR,NSC6364,NCA1042B,NSI6602NA-DSPNR,NSI6622A-DLAR,NSI6622C-Q1SPNR,NCA1042C,NSI8220CX-DSWR,NSI6622C-DSPNR,NSA3166,NCA1042A-Q1SPR,NSIP8941W0-DSWR,NSI6642B-DLAR,NCA1042B-Q1,NSPGD1M,NSE4254 系列,NSD1624-DSPR,NSI6602VA-Q1SWR,NSD1026V-Q1HMSR,NSI8242CX-DSWR,NSI6602MNC-Q1SWTR,NST20,NIRS31,NSREF30XX,NCA9545,NSI6622NA-DLAMR,NSI1042,NSI6611,NCA9546,NSI6622B-DSPNR,NCA9306,NCA9548,NSD12416-Q1SPR,NSI6602MC-Q1SWTR,NSI8242NX,NSD8381-Q1QAIR,NSD8308-Q1HTSXR,NCA9617A,NST1001HA,NSI6602VA-DSWR,NSI1303D2X,NSI6601B-DSWVR,NSD7310-DHSPR,NSI6601,NSD731X-Q1,NCA1057N-Q1SPR,NSR7808GXX,NSD7312-Q1HSPR,NSI6602VB-DLAMR,NSI6602MNF-DSWTR,NSD1026V-DHMSR,NSA3300,NSI6602C-Q1SWKR,NSC2860X,NSI6622NB-Q1SPNR,NCA1051N-DSPR,NSI6611ASC-DSWR,NSI22C11,NSI8230CX-DSWR,NSI6801B-DSPR,NSI6622A-DSPNR,NSD5604NE-DHTSTR,NSI6601MB-Q1SWVR,NST86,NCA1042B/ A-Q1,NIRS31-DSSR,NSI6642C-DSWKR,NSE4250 系列,NSA2200,NSI8262WX,NSI6602NB-DLAMR,NSE11409,NSI8260SX,NSPGD1,NCA1042B-Q1SPR,NSI6602VD-Q1SPNR,NSI6622NC-DLAMR,NSD8306,NSD3608-Q1,NSD731X,NSD8308,NIRSP31V,NSI6602VB-DLAR,NSD73

选型指南 - 纳芯微电子 - 2024年4月 PDF 中文下载

NSI1312 High Reliability Reinforced/Basic Isolated Amplifier Datasheet

型号- NSI1312X-DSPR,NSI1312D,NSI1312S,NSI1312,NSI1312X-DSWVR,NSI13125 -DSWVR,NS11312D-DSPR,NSI1312D-DSWVR,NS113125-DSPR

数据手册 - 纳芯微电子 - Revision 1.3 - 2023/7/20 PDF 英文下载

纳芯微电子数字隔离器和“隔离+”系列，为安全可靠的工控系统而来

作为布局“全信号链”产品线的领先模拟及混合信号公司，纳芯微电子的数字隔离器和“隔离+”系列产品（隔离采样、隔离接口、隔离电源）已经过市场的充分检验和客户验证，完善的解决方案已广泛应用于工业变送器、变频器、PLC、伺服等工控应用。

产品发布时间 : 2024-06-14

【应用】三相输入电压NSI1312S-DSPR用于变频器的电压检测，CMTI高达150kV/μs

在变频器里面电压检测电路是必不可少的， IGBT逆变电路的工作电压需要实时检测，让其保持在安全范围内；同时变频器输入部分也需要电压的实时检测来保证电压的正常输入，一旦电压出现异常马上出现过压保护。本文推荐使用纳芯微的NSI1312S-DSPR。

应用方案发布时间 : 2022-11-19

NSI1312D-DSWVR PcbLib & SchLib & IntLib

型号- NSI1312D-DSWVR

CAD模型库 - 纳芯微电子 - 2024/8/1 RAR 英文下载

NOVOSENSE Industrial Control Solution

型号- NCA1051,NSI1200,NCA1050,NSIP1042,NSI1042,NSI68515LC,NSI6651,NSC2860X,NSAD114X,NCA8244,NSC2860,NCA8245,NSI8241,NSI82XX,NSR2845,NSI1050,NSM2012,NSD5604,NSI1311,NSOPA9XXX,NSI1312,NSIP89XX,NSREF31XX,NSI83086E,NCA1042,NSM201×,NSA124X,NSE11409,NSD1025E,NLE8348,NSA2860X,NSIP83086,NSR31×,NSI1300,NSOPA8XXX,NSI83085E,NSI1306,NSI8308X,NSAD124X,NSI1305,NSD12416,NSI1303,NSI6801X,NSM201X,NSR10320,NSI8260,NSI68515,NSI8266,NSI8221,NSD1624,NSR31X,NSI8608,NSREF30XX,NSR10A11,NSIP88XX,NSD1624X,NSD11416,NCA3485,NSA2860,NST1001,NSA114X,NSA2862X

应用及方案 - 纳芯微电子 - April.2023 PDF 英文下载