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
標簽: pw2205
上傳時間: 2022-02-11
上傳用戶:
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
標簽: pw2163d
上傳時間: 2022-02-11
上傳用戶:
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
標簽: pw2163
上傳時間: 2022-02-11
上傳用戶:
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.
標簽: pw2162
上傳時間: 2022-02-11
上傳用戶:d1997wayne
本書是 Marc Thompson 博士 20 年模擬電路設計和教學經驗的總結,講述了模擬電路與系統設計中常用的直觀分析方法。本書提出了“模擬電路直觀方法學”,力圖幫助學生和設計人員擺脫復雜的理論推導與計算,充分利用直觀知識來應對模擬電路工程設計挑戰。全書共分為 16 章,內容涵蓋了二極管、晶體管、放大器、濾波器、反饋系統等模擬電路的基本知識與設計方法。本書大綱第 1 章與第 2 章為介紹性材料。第 1 章是本書的引言,同時介紹了模擬電路設計的發展動機,其中引用了一些精選的歷史事件。第 2 章講述后續章節中用到地重要的信號處理概念,以使讀者們能夠跟上作者的思路。第 3 章至第 8 章講述雙極性器件的物理學原理、雙極性結型晶體管 (bipolar junction transistor, BJT) 、晶體管放大器,以及用于帶寬估計與開關速度分析的近似技術。第 9 章講述 CMOS 管和 CMOS 管放大器的基礎知識。前面章節介紹的用于放大器設計的帶寬估計技術也同樣適用于 CMOS 管器件。第 10 章講述 晶體管的開關效應。晶體管是如何實現導通和關閉呢?又如何估計它的開關速度呢?第 11 章回顧反饋系統 (feedback system) 的基本知識以及設計穩定反饋系統的伯德圖 / 相位裕度方法 (Bod plot / phase margin) 。第 12 章和第 13 章講述實際運算放大器的設計、使用和限制,包括電壓反饋 (voltage-feedback) 以及電流反饋 (current-feedback) 放大器。第 14 章講述模擬低通濾波器設計的基本知識,包括巴特沃思 (Butterworth) 、切比雪夫 (Chebyshev) 、橢圓 (elliptic) 以及貝塞爾 (Bessel) 濾波器的無源梯形實現和胡源實現。第 15 章講述實際電路設計問題,比如 PCB 版圖設計規則、無源器件的使用和限制等。第 16 章是一些有用的設計技術和設計技巧的大雜燴,這些內容又不適合放在其他章節,所以作為獨立的章節進行講述。一些說明性的分析問題以及 MATLAB 和 SPICE 設計示例點綴在全書的字里行間,以幫助讀者理解本書的內容。
標簽: 模擬電路
上傳時間: 2022-02-14
上傳用戶:
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
標簽: pw2053
上傳時間: 2022-02-14
上傳用戶: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
標簽: pw1555
上傳時間: 2022-02-14
上傳用戶:
ADC模數轉換器件Altium Designer AD原理圖庫元件庫SV text has been written to file : 4.4 - ADC模數轉換器件.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水位計
標簽: adc 模數轉換 altium designer
上傳時間: 2022-03-13
上傳用戶:
Ansoft公司的Maww2D/3D是一個功能強大、結果精確、易于使用的二維/三維電磁場有限元分析軟件。它包括電場、靜磁場、渦流場、瞬態場和溫度場分析模塊,可以用來分析電機、傳感器、變壓器、永磁設備、激勵器等電磁裝置的靜態、穩態、瞬態、正常工況和故障工況的特性。它所包含的自上而下執行的用戶界面、領先的自適應網格剖分技術及用戶定義材料庫等特點,使得它在易用性上遙遙領先。它具有高性能矩陣求解器和多CUP處理能力,提供了最快的求解速度。靜磁場求解器(Magnetostatic)用于分析由恒定電流、永磁體及外部激磁引起的磁場,是用于激勵器、傳感器、電機及永磁體等。該模塊可自動計算磁場力、轉矩、電感和儲能用于求解某些涉及到運動和任意波形的電壓、電流源激勵的設備,可獲得精確的預測性能特性。該模塊能同時求解磁場電路及運動等強耦合的方程,從而得到電機的相關運行性能●渦流場求解器(Eddy Current用于分析受渦流、集膚效應、鄰近效應影響的系統。它求解的頻率范圍可以從θ到數百兆赫茲,能夠自動計算損耗、鐵損、力、轉矩、電感與儲能。允許用戶設置多項可變設計量,如位置、形狀、源及頻率等。可自動計算數千種情況的物理問題分析,而整個過程不許用戶干預。在繪制曲線模型時,系統默認的是將封閉后的曲線自動生成面,如果用戶不想讓其自動生成面,可以在繪制曲線模型前,點擊菜單欄中的 Tools/Options/Modeler Options項更改繪圖設置。材料庫的管理更加方便和直觀,新版軟件的材料庫主要由兩類組成,一是系統自帶材料庫的2D和3D有限元計算常用材料庫除此外還有 RMxprt電機設計模塊用的電機材料庫。二是用戶材料庫,可以將常用的且系統材料庫中沒有的材料單獨輸岀成用戶材料庫,庫名稱可自行命名,在使用前須將用戶材料庫裝載進軟件中
上傳時間: 2022-03-17
上傳用戶:
對某四輪獨立驅動電動汽車輪轂電機進行研究,設計一種永磁無刷直流電機控制器.以STM32F103RBT6芯片為基礎,對電機驅動電路、采樣電路和保護電路分別進行硬件設計與分析;同時,采用模塊化軟件設計方案,對該控制器的軟件系統進行升級.實驗驗證表明:所設計的電機控制器能使電機響應迅速、轉速穩定、無超調,且電動車動力輸出性能良好.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.
上傳時間: 2022-03-26
上傳用戶:qingfengchizhu