PW2205 develops a high efficiency synchronous step-down DC-DC converter capable of delivering5A output current. PW2205 operates over a wide input voltage range from 4.5V to 30V andintegrates main switch and synchronous switch with very low RDS(ON) to minimize the conductionloss.PW2205 adopts the instant PWM architecture to achieve fast transient responses for high step downapplications and high efficiency at light loads. In addition, it operates at pseudo-constant frequencyof 500kHz under continuous conduction mode to minimize the size of inductor and capacitor
标签： pw2205
上传时间： 2022-02-11
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The PW2163D is a high frequency, synchronous, rectified, step-down, switch-mode converter withinternal powerMOSFETs. It offers a very compact solution to provide a 3A continuous current over awide input supply range,with excellent load and line regulation.The PW2163D requires a minimal number of readily available, external components and is availablein a spacesaving SOT23-6 package
标签： pw2163d
上传时间： 2022-02-11
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The PW2163 is a high efficiency 500 kHz synchronous step-down DC-DC converter capable ofdelivering 3A current. The PW2163 operates over a wide input voltage range from 4.5V to 18V andintegrates main switch and synchronous switch with very low RDS(ON) to minimize the conductionloss. Low output voltage ripple and small external inductor and capacitor sizes are achieved with 500kHz switching frequency. It adopts the instant PWM architecture to achieve fast transient responsesfor high step down applications
标签： pw2163
上传时间： 2022-02-11
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The PW2162 is a fully integrated, high– efficiency 2A synchronous rectified step-down converter.The PW2162 operates at high efficiency over a wide output current load range. This device offerstwo operation modes, PWM control and PFM Mode switching control, which allows a high efficiencyover the wider range of the load. The PW2162 requires a minimum number of readily availablestandard external components and is available in an 6-pin SOT23 ROHS compliant package.
标签： pw2162
上传时间： 2022-02-11
上传用户：d1997wayne
本书是 Marc Thompson 博士 20 年模拟电路设计和教学经验的总结，讲述了模拟电路与系统设计中常用的直观分析方法。本书提出了“模拟电路直观方法学”，力图帮助学生和设计人员摆脱复杂的理论推导与计算，充分利用直观知识来应对模拟电路工程设计挑战。全书共分为 16 章，内容涵盖了二极管、晶体管、放大器、滤波器、反馈系统等模拟电路的基本知识与设计方法。本书大纲第 1 章与第 2 章为介绍性材料。第 1 章是本书的引言，同时介绍了模拟电路设计的发展动机，其中引用了一些精选的历史事件。第 2 章讲述后续章节中用到地重要的信号处理概念，以使读者们能够跟上作者的思路。第 3 章至第 8 章讲述双极性器件的物理学原理、双极性结型晶体管 (bipolar junction transistor, BJT) 、晶体管放大器，以及用于带宽估计与开关速度分析的近似技术。第 9 章讲述 CMOS 管和 CMOS 管放大器的基础知识。前面章节介绍的用于放大器设计的带宽估计技术也同样适用于 CMOS 管器件。第 10 章讲述 晶体管的开关效应。晶体管是如何实现导通和关闭呢？又如何估计它的开关速度呢？第 11 章回顾反馈系统 (feedback system) 的基本知识以及设计稳定反馈系统的伯德图 / 相位裕度方法 (Bod plot / phase margin) 。第 12 章和第 13 章讲述实际运算放大器的设计、使用和限制，包括电压反馈 (voltage-feedback) 以及电流反馈 (current-feedback) 放大器。第 14 章讲述模拟低通滤波器设计的基本知识，包括巴特沃思 (Butterworth) 、切比雪夫 (Chebyshev) 、椭圆 (elliptic) 以及贝塞尔 (Bessel) 滤波器的无源梯形实现和胡源实现。第 15 章讲述实际电路设计问题，比如 PCB 版图设计规则、无源器件的使用和限制等。第 16 章是一些有用的设计技术和设计技巧的大杂烩，这些内容又不适合放在其他章节，所以作为独立的章节进行讲述。一些说明性的分析问题以及 MATLAB 和 SPICE 设计示例点缀在全书的字里行间，以帮助读者理解本书的内容。
标签： 模拟电路
上传时间： 2022-02-14
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The PW2053 is a high-efficiency monolithic synchronous buck regulator using a constantfrequency, current mode architecture. The device is available in an adjustable version. Supply currentwith no load is 40uA and drops to <1uA in shutdown. The 2.5V to 5.5V input voltage range makesthe PW2053 ideally suited for single Li-Ion battery powered applications. 100% duty cycle provideslow dropout operation, extending battery life in portable systems. PWM/PFM mode operationprovides very low output ripple voltage for noise sensitive applications. Switching frequency isinternally set at 1.2MHz, allowing the use of small surface mount inductors and capacitors. Lowoutput voltages are easily supported with the 0.6V feedback reference voltage
标签： pw2053
上传时间： 2022-02-14
上传用户：jason_vip1
PW1555 is a programmable current limit switch with input voltage range selection and outputvoltage clamping. Extremely low RDS(ON) of the integrated protection N-channel FET helps toreduce power loss during the normal operation. Programmable soft-start time controls the slew rateof the output voltage during the start-up time. Independent enable control allows the complicatedsystem sequencing control. It integrates the over-temperature protection shutdown andautorecovery with hystersis
标签： pw1555
上传时间： 2022-02-14
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ADC模数转换器件Altium Designer AD原理图库元件库SV text has been written to file : 4.4 - ADC模数转换器件.csvLibrary Component Count : 29Name Description----------------------------------------------------------------------------------------------------ADC0800 National 8-Bit Analog to Digital ConverterADC0809 ADC0831 ADCADC0832 ADC8 Generic 8-Bit A/D ConverterCLC532 High-Speed 2:1 Analog MultiplexerCS5511 National 16-Bit Analog to Digital ConverterDAC8 Generic 8-Bit D/A ConverterEL1501 Differential line Driver/ReceiverEL2082 Current-Mode MultiplierEL4083 Current Mode Four Quadrant MultiplierEL4089 DC Restored Video AmplifierEL4094 Video Gain Control/FaderEL4095 Video Gain Contol/Fader/MultiplexerICL7106 LMC6953_NSC PCI Local Bus Power SupervisorMAX4147 300MHz, Low-Power, High-Output-Current, Differential Line DriverMAX4158 350MHz 2-Channel Video Multiplexer-AmplifierMAX4159 350MHz 2-Channel Video Multiplexer-AmplifierMAX4258 250MHz, 2-Channel Video Multiplexer-AmplifierMAX4259 250MHz 2-Channel Video Multiplexer-AmplifierMAX951 Ultra-Low-Power, Single-Supply Op Amp + Comparator + ReferenceMAX952 Ultra-Low-Power, Single-Supply Op Amp + Comparator + ReferenceMC1496 Balanced Modulator/DemodulatorPLL100k Generic Phase Locked LoopPLL10k Generic Phase Locked LoopPLL5k Generic Phase Locked LoopPLLx Generic Phase Locked Loop水位计
标签： adc 模数转换 altium designer
上传时间： 2022-03-13
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Ansoft公司的Maww2D/3D是一个功能强大、结果精确、易于使用的二维/三维电磁场有限元分析软件。它包括电场、静磁场、涡流场、瞬态场和温度场分析模块，可以用来分析电机、传感器、变压器、永磁设备、激励器等电磁装置的静态、稳态、瞬态、正常工况和故障工况的特性。它所包含的自上而下执行的用户界面、领先的自适应网格剖分技术及用户定义材料库等特点，使得它在易用性上遥遥领先。它具有高性能矩阵求解器和多CUP处理能力，提供了最快的求解速度。静磁场求解器（Magnetostatic）用于分析由恒定电流、永磁体及外部激磁引起的磁场，是用于激励器、传感器、电机及永磁体等。该模块可自动计算磁场力、转矩、电感和储能用于求解某些涉及到运动和任意波形的电压、电流源激励的设备，可获得精确的预测性能特性。该模块能同时求解磁场电路及运动等强耦合的方程，从而得到电机的相关运行性能●涡流场求解器（Eddy Current用于分析受涡流、集肤效应、邻近效应影响的系统。它求解的频率范围可以从θ到数百兆赫兹，能够自动计算损耗、铁损、力、转矩、电感与储能。允许用户设置多项可变设计量，如位置、形状、源及频率等。可自动计算数千种情况的物理问题分析，而整个过程不许用户干预。在绘制曲线模型时，系统默认的是将封闭后的曲线自动生成面，如果用户不想让其自动生成面，可以在绘制曲线模型前，点击菜单栏中的 Tools/Options/Modeler Options项更改绘图设置。材料库的管理更加方便和直观，新版软件的材料库主要由两类组成，一是系统自带材料库的2D和3D有限元计算常用材料库除此外还有 RMxprt电机设计模块用的电机材料库。二是用户材料库，可以将常用的且系统材料库中没有的材料单独输岀成用户材料库，库名称可自行命名，在使用前须将用户材料库装载进软件中
上传时间： 2022-03-17
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对某四轮独立驱动电动汽车轮毂电机进行研究,设计一种永磁无刷直流电机控制器.以STM32F103RBT6芯片为基础,对电机驱动电路、采样电路和保护电路分别进行硬件设计与分析;同时,采用模块化软件设计方案,对该控制器的软件系统进行升级.实验验证表明:所设计的电机控制器能使电机响应迅速、转速稳定、无超调,且电动车动力输出性能良好.A permanent magnet brushless direct current motor controller was designed by studying the hub motor of a four-wheel independent drive electric vehicle.Based on STM32 F103RBT6 chip,the hardware design and analysis of motor drive circuit,sampling circuit and protection circuit were carried out respectively.At the same time,modular software design scheme was adopted to upgrade the software system of the controller.Experimental results show that the designed motor controller can ensure the motor fast response,stable speed,no overshoot,and good power output performances.
上传时间： 2022-03-26
上传用户：qingfengchizhu
