400mA, High Output Slew Rate: NOVOSENSE‘s NSOPA240x Series Operational Amplifier Cracks the Challenge of Resolvers
With the continuous pursuit of high-precision, high-performance motor control technology, the ability of resolvers, as one of its core components, to accurately measure angular position and rotational speed becomes particularly important.
However, the special requirements of resolver drive circuits have always been a technical bottleneck in the development of the industry. To address this challenge, NOVOSENSE recently released the new NSOPA240x series of operational amplifier, which is designed to simplify circuit design and improve system robustness, bringing innovative solutions to resolver drive applications.
As electromagnetic sensors that can be used to accurately measure angular position and rotational speed, resolvers are widely used in industrial motor controls, servos, robots, and powertrain units in electric and hybrid vehicles. Particularly in electric vehicles, resolvers provide motor control algorithms with precise and stable position information, which is critical to ensuring ideal performance in a wide range of driving conditions. Through their unique operating principle, resolvers provide real-time and accurate feedback on the rotor angle and speed, enabling electric vehicles' motor control algorithms to accurately adjust the current output for smooth driving and instant response. In addition, resolvers' high temperature resistance, simple and reliable mechanism, compact size and low cost make them adaptable to the compact design requirements of electric vehicles and reduce overall costs.
In practice, the design of resolver drive circuits faces multiple challenges. First, the requirements for high current output and high slew rate must be met to ensure a stable excitation signal for resolvers. Second, simplifying circuit design and improving system robustness are also important issues faced by engineers. In addition, complex noise environments and stringent safety requirements bring more difficulties to the design.
With their excellent high gain bandwidth and slew rate, as well as continuous high output current drive function, NOVOSENSE's NSOPA240x high-current output operational amplifiers meet the stringent requirements of resolver primary coils for low-distortion and differential high-amplitude excitation. More importantly, NSOPA240x integrates internal thermal shutdown and overcurrent production, which not only optimizes the circuit design and reduces the system cost, but also significantly improves the overall system reliability and performance.
The automotive version of the NSOPA240x series meets the reliability requirements of AEC-Q100 Grade 1 and can work in harsh environments of -40~125℃. Different channel versions are available to meet different customer needs, with TO252-5 package for single-channel and HTSSOP14 package for dual-channel, as shown in the table below.
High current output capability - adapt to various resolver primary coil drives
Output current capability and output swing are among the most important indicators to measure the driving capability of power amplifiers. The relationship between load current and output swing directly determines the dissipated power in driving operational amplifiers. The excitation primary coil of a resolver usually has a very low DCR (DC resistance), typically less than 100Ω, so a strong current output capability up to 200mA is required to drive the coil. NSOPA240x is designed with a maximum continuous output current capability of 400mA, fully meeting the drive requirements of various resolvers.
High output slew rate - ensure undistorted primary coil excitation signal
Slew rate is one of the most important performance indicators reflecting the dynamic response of an operational amplifier, and the minimum requirement for undistorted sinusoidal signals is shown in the following formula:
Different types of resolvers have different requirements for the amplitude and frequency of the excitation signal. Taking a 7Vrms, 10kHz excitation signal as an example. According to the calculation results of the above formula, the minimum slew rate required to ensure no distortion is about 0.6 V/μs. With a slew rate of 5.5 V/μs, NSOPA240x meets most application requirements for resolver drives.
Integrated current limiting protection and overheating protection - improve resolver system reliability, and reduce complexity and cost
For the power level of several hundred mA at the primary drive end of a resolver, perfect protection measures must be taken, otherwise the system will be seriously threatened or even burned due to overheating and other reasons. NSOPA240x integrates a thermal shutdown protection function. When the chip junction temperature exceeds 173℃, the device will be disabled and the occurrence of a thermal shutdown event will be indicated by the OTF/SH_DN status. To prevent repeated triggering, the overtemperature shutdown function has a temperature hysteresis, where the junction temperature needs to fall back to 155℃ before the device is re-enabled and the state of the OTF/SH_DN pin changes to indicate that the thermal shutdown event has stopped.
As shown in the figure below, NSOPA240x can provide customers with system-level functional safety and simultaneously indicate short circuit to power and short circuit to ground.
In addition, each operational amplifier in the chip has current limiting protection for the PMOS (high side) and NMOS (low side) output transistors, because overcurrent may be found on the high side or the low side. And two dedicated pins (as shown in the red box in the figure) are provided to distinguish between high side overcurrent and low side overcurrent, corresponding to the applications of short circuit to ground and short circuit to supply voltage respectively. When the output current returns to normal, the indicator pins will be released synchronously, allowing the system to easily cope with short circuit test scenarios similar to those specified in the ISO 16750 standard.
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本文由玄子转载自NOVOSENSE Official Website，原文标题为:400mA, High Output Slew Rate: NOVOSENSE's NSOPA240x Series Cracks the Challenge of Resolvers，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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萨科微半导体领导者
描述- 资料详细介绍了深圳市萨科微半导体有限公司的产品和服务。公司专注于半导体领域，提供包括二极管、三极管、功率器件、电源管理芯片等在内的多种产品。产品广泛应用于智能手机、电脑、机器人、交通工具、智慧家居等行业。萨科微拥有国际领先的碳化硅MOSFET生产工艺，并拥有ISO9001质量管理体系和多项国际认证。公司致力于成为半导体领域的领导者。
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纳芯微汽车电子解决方案 助力汽车电动化和智能化发展
描述- 纳芯微电子是一家专注于高性能高可靠性模拟及混合信号芯片的公司，为汽车、工业、信息通讯及消费电子领域提供半导体产品及解决方案。公司产品涵盖传感器、信号链、电源管理等方向，包括智能网联、驾驶、座舱、车身控制与照明、底盘与安全等多个汽车电子应用领域。纳芯微致力于成为汽车供应链合作伙伴，拥有丰富的车规量产经验和优秀的质量表现。
型号- NSL2163X-Q1,NSL23916-Q1,NSI1311,NSI6601,NSI7258,NSR2240X,NPC060N065A,NSL23716X-Q1,NCA8244,NSM2017,NPI040N120A (1200V. 40V),NSM2019,NSM2013,NSI22C11,NSM2015,NSC9260X,NSM2011,NSR33XXX,NSC9262,NSI1300,NSC9264,NSREF31XX,NSI1306,NPS0X0N065A,NSP1830,NSL2161X-Q1,NCA1169,NCA1044,NSR7808,NSOPA240X,NSE11409,NSP1831,NSP1832,NSM2020,NSD8306,NSOPA8XXX,NSD8308,NSI67XX,NS0PA8XXX,NSD1026V,NSR31XXXT,NSE425X,NSE34050,NSL31682-Q1,NSL21912-Q1,NSI6622V,NSPDC1,NSR31XXX,NCA1021S,NSD8310,NSD8312,NSD1624,NPI030N065A,NSR104XX,NCA1043(B),NSD731X,NSI6651,NSD11416,NSI22C12,NCA1051A,NSUC1602,NCA1462,NSD8381,NSD56008,NSM3011,NST17 5-Q1,NSIP2266-Q1,NSPADX,NSM3013,NSM3012,NSI6801,NST60-Q1,NSUC1610,NCA9539,NST175-Q1,NSR7850,NST175,NSM203X,NSIP605X,NSI6911,NSOPA9XXX,NSI824X,NST86-Q1,NSP1631,NSD12409,NSP1632,NSPASX,NSP1630,NSCSA24X,NSM1013,NPI040N120A,NSL23924-Q1,NCA9555,NSI822X,NSA9264,NCA1042B,NSCSA21X,NSD12416,NSPGM2,NSM2117,NSPGM1,NSI6602V,NSD3608,NSM2113,NSM2115,NSR35X,NSD3604,NSL31520-Q1,NSR35XXX,NST20,NSREF30XX,NPC0X0N120A,NSI1200,NS0PA9XXX,NSI6611,NSPAS1,NSPAS3,NST235-Q1,NCA1145,NSE5702,NSI6601M,NSE5701,NSA9260X,NSR114XX,NSR1048,NSM1030
纳芯微NSOPA240x系列功率放大器应用笔记
本应用笔记介绍了纳芯微为旋转变压器驱动所设计的功率放大器NSOPA240x系列（即NSOPA2401/2）的特性和典型设计要点。NSOPA2401/2 将单/双通道的功率放大器、过温关断，限流保护功能集成在单芯片上，降低了设计复杂性和系统成本，提高了可靠性和性能。
Novosense汽车解决方案助力XEV电动化、智能化
描述- NOVOSENSE微电子公司是一家专注于提供高可靠性模拟和混合信号芯片的公司，产品广泛应用于汽车、工业、信息通信和消费电子市场。公司提供全面的半导体产品和解决方案，包括传感器、信号链和电源管理。资料详细介绍了NOVOSENSE在汽车电子领域的解决方案，包括牵引逆变器、车载充电器（OBC）、DC-DC充电器、电池管理系统（BMS）等，并展示了其在热管理系统、LED驱动器、车身控制模块（BCM）和车载信息娱乐系统等方面的产品和应用。
型号- NSL23916-Q1,NSI1311,NSI6601,NSI7258,NPC060N065A,NCA8244,NSM2017,NSM2019,NSM2013,NSI22C11,NSM2015,NSM2011,NSR33XXX,NSC9262,NSI1300,NSC9264,NSREF31XX,NSI1306,NSR2240X,NPS0X0N065A,NSP1830,NCA1169,NCA1044,NCA1043,NSR7808,NSOPA240X,NSE11409,NSP1831,NSC9260X,NSP1832,NSM2020,NSL2161X-Q1,NSD8306,NSOPA8XXX,NSD731X,NSD8308,NSI67XX,NSD1026V,NSE34050,NSL31682-Q1,NSCSA24X,NSL21912-Q1,NSI6622V,NSPDC1,NSR31XXX,NCA1021S,NSD8310,NSD1624,NSD8312,NPI030N065A,NSR104XX,NSI6651,NSD11416,NSI22C12,NCA1051A,NSUC1602,NCA1462,NSD8381,NSD56008,NSM3011,NSPADX,NSM3013,NSM3012,NSI6801,NST60-Q1,NSUC1610,NSI824X,NCA9539,NST175-Q1,NSR7850,NST175,NSM203X,NSIP605X,NSIP3266-Q1,NSOPA9XXX,NSI6911,NST86-Q1,NSP1631,NSD12409,NSP1632,NSPASX,NSP1630,NSE425X,NSM1013,NPI040N120A,NSL23924-Q1,NCA9555,NSI822X,NSA9264,NCA1042B,NSD12416,NSA9260X,NSPGM2,NSM2117,NSPGM1,NSI6602V,NSD3608,NSM2113,NSM2115,NSD3604,NSL31520-Q1,NSL2163X-Q1,NSR35XXX,NST20,NSREF30XX,NPC0X0N120A,NSI1200,NSI6611,NSPAS1,NSPAS3,NCA1145,NST235-Q1,NSCSA21X,NCA1043B,NSE5702,NSI6601M,NSE5701,NSR114XX,NSR1048,NSL23716X-Q1,NSM1030
NSOPA801x 5.5V轨到轨输入/输出1.5MHz通用运算放大器数据手册（EN）1.1
描述- NSOPA801x系列包括单通道、双通道和四通道运算放大器，适用于1.8V至5.5V的低电压应用。该系列具有轨到轨输入和输出能力，适用于低电压操作和高电容负载驱动。特点包括低输入偏移电压、高电源抑制比、低噪声和低静态电流。
型号- NSOPA801X,NSOPA8012-DSPR,NSOPA8014-DSPKR,NSOPA8011,NSOPA8011-DSTAR,NSOPA8014-DTSKR,NSOPA8012,NSOPA8011-DSCAR,NSOPA8012-DMSR,NSOPA801X FAMILY,NSOPA8014
功率运算放大器NSOPA240X应用于旋转变压器驱动电路应用笔记
描述- 本应用笔记介绍了纳芯微的功率运算放大器NSOPA2401/2在旋转变压器驱动电路中的应用。该放大器集成了单/双通道功率放大、过温关断和限流保护功能，旨在降低设计复杂性和系统成本，提高可靠性和性能。笔记详细讨论了旋转变压器的特性、电气参数、功率计算、散热处理以及NSOPA240X的关键参数和特性。
型号- NSOPA240X,NSOPA2401,NSOPA2402
400mA、高输出压摆率，纳芯微NSOPA240x系列破解旋转变压器之“难”
旋转变压器驱动电路的特殊要求一直是行业发展的技术瓶颈。为解决这一挑战，纳芯微近日发布了全新的NSOPA240x系列运算放大器，旨在简化电路设计并提高系统鲁棒性，为旋转变压器驱动应用带来创新性的解决方案。
NSOPA905x 40 V轨到轨输入/输出、6MHz、低失调电压、低噪声运算放大器数据手册（EN）1.1
描述- NSOPA905x系列是一款高压（40V）通用运算放大器，具有高直流精度和AC性能，包括轨到轨输入/输出、低偏移电压、低噪声和6MHz带宽。该系列器件适用于多种工业应用，具有宽电源电压范围、低偏移电压、高输出电流、高摆率、高电容负载驱动能力和关断功能。
型号- NSOPA9051-DSTAR,NSOPA905X FAMILY,NSOPA9051-DSPR,NSOPA9052-DSPR,NSOPA9052,NSOPA9051,NSOPA9054,NSOPA9054-DTSKR,NSOPA9054-DSPKR,NSOPA905X,NSOPA9052-DMSR
Novosense工业控制解决方案
描述- NOVOSENSE微电子公司专注于提供高性能的模拟和混合信号芯片，广泛应用于汽车、工业、信息通信和消费电子市场。公司产品涵盖传感器、信号链和电源管理，包括工业控制系统、能源控制单元、智能电表、集中器、FTU、DTU、PDU、PLC、步进电机、工业变频器、伺服系统和BTS电池组件容量等。产品线丰富，包括霍尔电流传感器、运算放大器、ADC、压力传感器、温度传感器、CAN收发器、RS485收发器、I/O扩展器、I2C、缓冲器、数字隔离器、隔离电流/电压检测、隔离电源、隔离驱动器、非隔离驱动器、高/低边开关、AC-DC转换器、DC-DC转换器、LDO、电压参考和监控与复位IC等。
型号- NSI6801,NSI1311,NSI1312,NSI824X,NSAD114X,NCA8244,NCA8245,NSM2017,NSM211X,NST175,NSM2019,NSM2013,NSI22C11,NSI68515,NSM2015,NSM2011,NSD5604,NSM2012,NSA2862X,NSR33XXX,NST86,NSOPA9XXX,NSI1300,NSI6801M,NSREF31XX,NSI1306,NST112X,NSI1303,NCA1044,NSI1305,NSR7808,NSE11409,NSI8266,NSI8100,NSR28C4X,NIRS21,NSI8260,NSOPA8XXX,NCA9555,NSI1200C,NSD1026V,NCA1042B,NSAD124X,NSD12416,NSI8608,NCA3176,NSCSA24X,NSI83086,NSM201X,NSI83085,NSM2113,NSM2311,NST235,NSR31XXX,NSA2860X,NST60,NSD1624,NST20,NIRS31,NSR104XX,NSR35XXX,NSD1224,NSREF30XX,NSCSA199,NSI1200,NSI1042,NSI1400,NSCSA21X,NSD11416,NSC2860X,NSI22C12,NCA1051A,NCA3485,NST1002,NST1001,NSI82XX,NSI8200,NSI1050
探究纳芯微运算放大器如何应对旋转变压器驱动痛点？
文章从旋转变压器系统及其驱动电路的要求入手，介绍了NSOPA240x系列放大器的特性，并通过典型性能指标展示了该系列放大器在旋转变压器驱动应用中的优势。
可再生能源与电源应用解决方案
描述- NOVOSENSE微电子公司提供全面的半导体产品和解决方案，专注于传感器、信号链和电源管理，广泛应用于汽车、工业、信息通信和消费电子市场。公司提供多种可再生能源和电源应用解决方案，包括太阳能逆变器、微逆变器、储能逆变器、PCS、便携式电源站、电动汽车充电器、电力模块、UPS、AC-DC电源、DC-DC电源和适配器电源等。产品涵盖数字隔离器、CAN、隔离驱动器、非隔离驱动器、隔离电源、电机驱动器、LDO、隔离传感、霍尔电流传感器、运算放大器、温度传感器、电压参考、监控与复位IC、功率器件等。
型号- NSI6801,NSI1311,NSI6601,NSI1312,NSIP884X,NSI824X,NCA8244,NSM2017,NIRSP31,NSM2019,NSM211X,NSIP83086,NSM2013,NSM2015,NSI68515,NSM2011,NSR33XXX,NSOPA9XXX,NSI1300,NSI6801M,NSI83008XE,NPD0X0N120A,NSI823X,NSIP21,NSREF31XX,NPS0X0N065A,NSR2240X,NCA1043,NSR7808,NSI8100,NSHT3X,NSD7312,NSD2621,NSR28C4X,NIRS21,NSIP8942,NSOPA8XXX,NCA9555,NSI1200C,NSI822X,NSIP31,NSIP894X,NSD1026V,NCA1042B,NCA3176,NSCSA24X,NSI83086,NSI83085,NSI6602V,NSM2311,NSM2113,NST235,NSR31XXX,NSIP1042,NSD1624,NPI030N065A,NST20,NSR35XXX,NSR104XX,NIRS31,NSD1224,NSREF30XX,NPC0X0N120A,NSI1042,NSI6611,NSI1400,NSCSA21X,NCA1043B,NCA1051A,NSI6601M,NCA3485,NCA1042B2,NST1002,NST1001,NSI82XX,NSI8200,NSI1050,NSI3190
Novosense光伏、储能和电动汽车充电器解决方案
型号- NSI6602,NSI6801,NSI1311,NSI6601,NSI1312,NSCS2XX,NCA854X,NSREF30,NSI1200D25,NREF30XX,NPD040,NSR24XX,NPC040N120,N120NPD020,NSI8308X,NIRSP31,NSM2019,NSIP83086,NSIP83085,NPD0X0N120,NSI68515,NSR2845,NSI1300D25,NSOPA9XXX,NSI1300,NSI13XX,NSD1025V,NSREF31XX,NSR2240X,NPD030,NCA1042,N120NPD030,NSR7808,NSIP89XX,NLE8348,NSD7312,NSOPA8XXX,NSI1200D05,NSI6622,NCA824X,NSD731X,NCA1042B,NPD020,NSI68011,NSI83086,NSM201X,NSI83085,NSR10320,N120NPD040N120,NST235,NSR31XXX,NSIP1042,NSI6801C,NSI1300D05,NSD1624,NSIP81042,NPC080N120,NSA8244,NSREF30XX,NSR3X,NSA8245,NSI1200,NSI6611,NSI1042,NSI82XXC,NSI6651,NSR31XX,NSOPA90XX,NCA1051A,NSI6601M,NCA3485,NSR10430,NSR28QXX,NSIP88XX,NSI82XX,NSI8241,NSI1050
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