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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IP2726_AC_FBR 是一款集成多种协议、用于 USB-A 和 TYPE-C 双端口输出的快充协议 IC。支持多 种快充协议,包括 USB TypeC DFP,PD2.0/PD3.0/PPS , HVDCP QC4+/QC4/QC3.0/QC2.0(Quick Charge),FCP (Hisilicon® Fast Charge Protocol),SCP(Super Fast Charge),AFC(Samsung® Adaptive Fast Charge), MTK PE+ 2.0/1.1( MediaTek Pump Express Plus 2.0/1.1),Apple 2.4A,BC1.2 以及 2.0A。为适 配器、车充等单向输出应用提供完整的 TYPE-C 解决 方案。 IP2726_AC_FBR 具备高集成度与丰富功能,在 应用时仅需极少的外围器件,有效减小整体方案的 尺寸,降低 BOM 成本。
标签: usb
上传时间: 2022-02-24
上传用户:xsr1983
解读 5G 八大关键技术 【摘要】5G 不是一次革命,5G 是 4G 的延续,我相信 5G 在核心网部分不会有太 大的变动,5G 的关键技术集中在无线部分。 在进入主题之前,我觉得首先应该弄清楚一个问题:为什么需要 5G?不是因 为通信工程师们突然想改变世界,而炮制了一个 5G。是因为先有了需求,才有了 5G。什么需求? 未来的网络将会面对:1000 倍的数据容量增长,10 到 100 倍的无线设备连接, 10 到 100 倍的用户速率需求,10 倍长的电池续航时间需求等等。坦白的讲,4G 网络无法满足这些需求,所以 5G 就必须登场。 但是,5G 不是一次革命。5G 是 4G 的延续,我相信 5G 在核心网部分不会有 太大的变动,5G 的关键技术集中在无线部分。虽然 5G 最终将采用何种技术,目前 还没有定论。不过,综合各大高端论坛讨论的焦点,我今天收集了 8 大关键技术。 当然,应该远不止这些。 1.非正交多址接入技术 (Non-Orthogonal Multiple Access,NOMA) 我们知道 3G 采用直接序列码分多址(Direct Sequence CDMA ,DS-CDMA) 技术,手机接收端使用 Rake 接收器,由于其非正交特性,就得使用快速功率控制 (Fast transmission power control ,TPC)来解决手机和小区之间的远-近问题。 而 4G 网络则采用正交频分多址(
标签: 5G
上传时间: 2022-02-25
上传用户:20125101110
IP2723T 是一款集成多种协议、用于 USB 输出 端口的快充协议 IC。支持多种快充协议,包括 USB TypeC DFP , PD2.0/PD3.0/PPS , HVDCP QC4/QC4+/QC3.0/QC2.0 ( Quick Charge ), FCP (Hisilicon® Fast Charge Protocol),SCP(Super Fast Charge),AFC(Samsung® Adaptive Fast Charge), MTK PE+ 2.0/1.1(MediaTek Pump Express Plus 2.0/1.1),Apple 2.4A,BC1.2 以及三星 2.0A。为适 配器、车充等单向输出应用提供完整的 TYPE-C 解决 方案。
标签: IP2723
上传时间: 2022-03-04
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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
以AT89S52单片机为控制核心,采用电容降压技术,Buck电路拓扑,PWM驱动模块和功率器件散热设计,通过高速的数据采集、主功率输入输出模块和控制模块,设计一种新型智能车载充电器.在充电过程中,通过负脉冲瞬间放电实现对铅酸蓄电池的再生修复,提高电池的有效容量,延长使用寿命.该充电器体积小、速度快、效率高、可靠性好.With AT89S52 single chip computer as the control core,a new type of intelligent car-carried charger was designed by using capacitance step-down technology,Buck circuit topology,PWM driving module and power device heat dissipation design,through high-speed data acquisition,main power input and output module and control module.In the charging process,the regeneration and repair of lead-acid batteries are realized by instantaneous discharge of negative pulse,which improves the effective capacity of batteries and prolongs their service life.The charger has the advantages of small size,Fast speed,high efficiency and good reliability.
标签: 车载充电器
上传时间: 2022-03-27
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特点:o ARM® Cortex®-M4 CPU 平台o 高达150MHz 的高性能Cortex®-M4 处理器o 集成FPU 和MPUo 内存o 512KB 片上SRAMo 2KB 至512KB 可编程保持存储区o 闪存o 1MB 集成闪存o 原地执行NOR 闪存接口,在闪存中执行时接近0 等待状态o 供电和复位管理系统o 片上稳压器,支持1.7V-3.6V 输入o 上电复位(POR)o 时钟管理o 10-30MHz 晶体振荡器o 内部16MHz RCo 32kHz 晶体振荡器o 内部32kHz RCo 具有可编程输出频率的低功耗PLLo 通用DMA:具有硬件流控制的8 通道DMA 控制器o 安全o 使用TRNG(真随机数发生器)的简单加密引擎o 定时器/计数器o 1x 系统节拍定时器o 4x 32 位定时器o 1x 看门狗定时器o 功耗(待确认)o 满载:待定uA/MHz @ 25°Co 运行:待定uA /MHz @ 25°Co 停止:待定@ 25°Co 保留:待定@ 25°C,32kB 保留存储器o 待机:待定@ 25°C,内部32kHz RCo 12 位逐次逼近寄存器(SAR)ADCo 每秒最多2M 样本o 可通过8:1 多路复用器选择输入o 1 个带有集成PHY 的USB 2.0 高速双角色端口o 两个SD / SDIO 主机接口o SD/SDIO 2.0 模式:时钟高达50MHzo LCD 控制器o 分辨率高达480x320o 6800 和8080 异步模式(8 位)o JTAG 调试功能o 3 个PWM(6 个输出),3 个捕捉和3 个QEP 模块o 4x UART,带有HW 流控制,最高可达4Mbpso 3x I2C,支持Fast Mode+(1000kbps)o 2x I2S 接口o 3x SPI 主器件高达25MHz,1x SPI 从器件高达10MHzo 32 个GPIOo 68 引脚QFN 封装o 温度范围:-40 至85°C4.1 带FPU 内核的ARM®CORTEX®-M4带有FPU 处理器的ARM®Cortex®-M4 是一款32 位RISC 处理器,具有出色的代码和功率效率。它支持一组DSP 指令,以允许高效执行信号处理算法,非常适合于可穿戴和其他嵌入式市场。集成的单精度FPU(浮点单元)便于重用第三方库,从而缩短开发时间。内部内存保护单元(MPU)用于管理对内的访问,以防止一个任务意外破坏另一个活动任务使用的内存。集成紧密耦合的嵌套向量中断控制器,提供多达16 个优先级。4.2 系统内存Bock 包含512kB 零等待状态SRAM,非常适合于当今算法日益增长的需求。同时,内存被细分为更小的区,从而可以单独地关闭以降低功耗。4.3 闪存和XIP 单元提供1MB 的集成NOR 闪存,以支持CPU 直接执行。为了提高性能,XIP 单元具有集成的缓存系统。缓冲内存与系统内存共享。与从系统内存运行性能相比,XIP 单元使得许多应用程序的运行接近100%。4.4 ROM集成ROM 固件包含通过NOR 闪存正常引导所需的引导加载程序,支持用于批量生产的闪存编程,还包括用于调试目的的UART 和USB 启动功能。
标签: tg401
上传时间: 2022-06-06
上传用户:qdxqdxqdxqdx
Mathematical modeling has become an important part of the research and devclopment work in engineering and scicnce. Retaining a competitive edge requiresa Fast path between ideas and prototypes, and in this regard mathematical modeling and simulation provide a valuable shortcut for understanding both qualitative and quantitative aspects of scientific and engineering design. To assist you in gaining this edge, COMSOL Multiphysics offers state-of-the art performance, being built from the ground up with a Java3D interface and C/C++ solvers.The Acoustics Module is an optional package that extends the COMSOL Multiphysicsmodcling cnvironment with customized user interfaces and functionality optimizcd for the analysis of acoustics. Like all modules in the COMSOL family, it provides a brary of prewritten ready-to-run models that make it quicker and casier to analyze disciplinc-specific problcms.
上传时间: 2022-06-19
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In this presentation, we will look at what the Serial Peripheral Interface, otherwise known as the SPI, is. and how it is used to communicate data to and from the PICmicro microcontroller.SPl is frequently used when few 1/O lines are available, but communication between two or more devices must be Fast and easy to implement.In this presentation, we will discuss the following topics: We will first cover an Overview of SPI This section of the tutorial will introduce you to SPI and its concepts.Next, we will examine the use of SPI on the PICmicro MCU.The details of how SPI is implemented on a PICmicro device will be examined.Then, a Code Walkthrough will be given.The walkthough will explore code for both an SPI Master and SPI Slave. The example will have the Master generate data for sending to the slave.Finally, there will be a few resources given at the end of the presentation. These resources will allow you to explore in more detail the SPI interface
标签: spi协议
上传时间: 2022-06-20
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Datasheet SHT3x-DISHumidity and Temperature Sensor Fully calibrated, linearized, and temperaturecompensated digital output Wide supply voltage range, from 2.4 V to 5.5 V I2C Interface with communication speeds up to 1MHz and two user selectable addresses Typical accuracy of 2 %RH and 0.3 °C Very Fast start-up and measurement time Tiny 8-Pin DFN package
上传时间: 2022-06-29
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