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The PW4055 is a complete constant-current /constant-voltage linear charger for single cell lithiumion batteries.Its ThinSOT package and low external component count make the PW4055 ideallysuited for portable applications.Furthermore, the PW4055 is specifically designed to work within USBpower specifications.The PW4055 No external sense resistor is needed, and no blocking diode is required due to theinternal MOSFET architecture.Thermal feedback regulates the charge current to limit the dietemperature during high power operation or high ambient temperature. The charge voltage is fixedat 4.2V, and the charge current can be programmed externally with a single resistor. The PW4055automatically terminates the charge cycle when the charge current drops to 1/10th the programmedvalue after the final float voltage is reached. When the input supply (wall adapter or USB supply) isremoved, the PW4055 automatically enters a low current state, dropping the battery drain currentto less than 2μA. The PW4055 can be put into shutdown mode, reducing the supply current to 25μA.The BAT pin has a 7KV ESD(HBM) capability. Other features include charge current monitor, undervoltage lockout, automatic recharge and a status pin to indicate charge termination and the presenceof an input voltage
標(biāo)簽：
pw4055
上傳時間：
2022-02-11
上傳用戶：jason_vip1
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The PW2228A is a high efficiency single inductor Buck-Boost converter which can supply theload current up to 1.5A. It provides auto-transition between Buck and Boost Mode. The PW2228Aoperates at 2.4MHz switching frequency in CCM. DC/DC converter operates at Pulse-Skipping Modeat light load. The output voltage is programmable using an external resistor divider, or is fixed to3.3V internally. The load is disconnected from the VIN during shutdown.The PW2228A is available in TDFN3X3-10 package.
標(biāo)簽：
pw2228a
上傳時間：
2022-02-11
上傳用戶：
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目前電動汽車主要以鋰電池作為動力來源,為了提高鋰電池的使用時間和安全性,為鋰電池提供安全良好的運行環(huán)境,電池管理系統(tǒng)應(yīng)運而生。BMS主控單元基于S32K144汽車級單片機,通過主從式網(wǎng)絡(luò)控制結(jié)構(gòu)能夠?qū)︿囯姵氐母鱾€參數(shù)進行采集與分析。采用擴展卡爾曼濾波對電池的荷電狀態(tài)(SOC)進行估算,克服普通估算方法無法避免電池內(nèi)阻誤差的缺點,通過Matlab/Simulink軟件仿真驗證可使估算誤差達到2%以內(nèi)。At present,electric vehicles mainly use lithium batteries as the power source.In order to improve the running time and safety of lithium batteries,a safe and good operating environment for power batteries is provided,and a battery management system(BMS) has emerged.The BMS main control unit is based on the S32K144 automotive-grade control chip.Through the master-slave network control structure,it can collect and analyze the various parameters of the lithium battery.The Extended Kalman Filter(EKF) is used to estimate the state of charge(SOC) of the battery,which overcomes the shortcomings of the internal estimation method that cannot overcome the internal resistance error of the battery.It can be verified by Matlab/Simulink software simulation.The estimation error is within 2%.
標(biāo)簽：
s32k144
bms
上傳時間：
2022-03-26
上傳用戶：XuVshu
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LED 線陣顯示裝置, 分為 LED 線性旋轉(zhuǎn)顯示主機和圖文錄入器兩部分。主機用直流電機帶動由紅綠 LED 組成的線陣旋轉(zhuǎn), 同時線陣按照時序依次切換顯示狀態(tài), 在固定區(qū)域利用視覺暫留效果形成 16×16 點陣, 用以顯示圖文;圖文錄入器用 HMI 觸控屏作為人機交互界面, 實現(xiàn)圖文錄入和回放功能。主機與圖文錄入器通過無線通信方式進行信息交互,可由圖文錄入器控制主機切換不同工作任務(wù), 以及改變線陣顯示內(nèi)容。The LED linear array display device is divided into two parts:the one is the main unit used to display content,and the other one is used to input the contents.The main unit is driven by a DC motor to rotate the linear array composed by red and green light emitting diodes.At the same time,the 16×16 dot matrix that switching the display state according to the time sequence on the main unit displays pictures and texts in the fixed area,by using the visual temporary effect.The HMI touch screen is used as human machine interface to realize the function that input and playback pictures and texts.The two parts of the device communicate with each other through wireless communication.The image and text input controller can control the main unit to switch different tasks and change the content of linear array displayed.
標(biāo)簽：
stc12c5a60s2
單片機
led
上傳時間：
2022-03-28
上傳用戶：jiabin
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If register should be written or read.This value is passed to the calback functions which support either reading or writing register values. Writing means that the application registers should be updated and reading means that the modbus protocol stack needs to know the current register values.See also: eMBRegHoldingCB(), eMBRegCoilsCB(), eMBRegDiscreteCB() and eMBReglnputCB().Enumeration values: MB_REG_READ Read register values and pass to protocol stack.MB_REG_WRITE Update register values.Note: Note all ports implement this function.A port which wants to get an callback must define the macro MB_PORT_HAS_CLOSE to 1.Returns: If the resources where released it return eMBErrorCode:: MB_ENOERR. If the protocol stack is not in the disabled state it returns eMBErrorCode:: MB_EILLSTATE.Examples: LINUX/demo.c, MCF5235TCP/demo.c, STR71XTCP/demo.c, WIN32/demo. cpp, and WIN32TCP/demo. cpp.his function disables processing of Modbus frames.Returns: If the protocol stack has been disabled
標(biāo)簽：
FreeModbus
上傳時間：
2022-05-31
上傳用戶：
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ICN6201/02 is a bridge chip which receives MIPI? DSI inputs and sends LVDS outputs.
MIPI? DSI supports up to 4 lanes and each lane operates at 1Gbps maximum; the totally maximum input
bandwidth is 4Gbps; and the MIPI defined ULPS(ultra-low-power state) is also supported. ICN6201 decodes
MIPI? DSI 18bepp RGB666 and 24bpp RGB888 packets.The LVDS output 18 or 24 bits pixel with 25MHz to 154MHz, by VESA or JEIDA format.ICN6201/02 support video resolution up to FHD (1920x1080) and WUXGA (1920x1200).ICN6201 adopts QFN48 package and ICN6202 adopts QFN40 package
標(biāo)簽：
icn6202
上傳時間：
2022-06-10
上傳用戶：kingwide
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DescriptionThe IMX385LQR-C is a diagonal 8.35 mm (Type 1/2) CMOS active pixel type solid-state image sensor with a squarepixel array and 2.13 M effective pixels. This chip operates with analog 3.3 V, digital 1.2 V, and interface 1.8 V triplepower supply, and has low power consumption. High sensitivity, low dark current and no smear are achieved throughthe adoption of R, G and B primary color mosaic filters. This chip features an electronic shutter with variablecharge-integration time.(Applications: Surveillance cameras)
標(biāo)簽：
CMOS傳感器
IMX385LQR-C
上傳時間：
2022-06-18
上傳用戶：
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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.
標(biāo)簽：
comsol
聲學(xué)模塊
上傳時間：
2022-06-19
上傳用戶：
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Introduction The Sil9135/Sil9135A HDMI Receiver with Enhanced Audio and Deep Color Outputs is a second-generation dual-input High Definition Multimedia Interface(HDMI)receiver. It is software-compatible with the Sil9133receiver, but adds audio support for DTS-HD and Dolby TrueHD. Digital televisions that can display 10-or 12-bit color depth can now provide the highest quality protected digital audio and video over a single cable. The Sil9135and Sil9135A devices, which are functionally identical, can receive Deep Color video up to 12-bit,1080p @60Hz. Backward compatibility with the DVI 1.0specification allows HDMI systems to connect to existing DVI 1.0 hosts, such as HD set-top boxes and PCs. Silicon Image HDMI receivers use the latest generation Transition Minimized Differential Signaling(TMDS) core technology that runs at 25-225 MHz.The chip comes pre-programmed with High-bandwidth?
標(biāo)簽：
sii9135
芯片
上傳時間：
2022-06-25
上傳用戶：
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BMS定義·BMS:Battery management system SYSTEM），其作用是對鋰離子電池電壓、電流、溫度、容量、電池SOC荷電狀態(tài)計量、電池與車體的絕緣狀態(tài)等多種電池參數(shù)以CAN通訊的方式與車控電腦實時進行信息交換，確保電池的能量發(fā)揮到極致，使駕駛者能夠隨時掌握電池的工作狀態(tài)，以保證電池的安全。BMS不僅是數(shù)字化智能電池系統(tǒng)的中樞神經(jīng)，也是新能源汽車必不可少的關(guān)鍵部件·SOC:State of Charge，電池（組）荷電狀態(tài)；·SOH:State of Health，電池健康度BMS功能·1）電池工作狀態(tài)監(jiān)控：主要指在電池的工作過程中，對電池的電壓，溫度，工作電流，電池電，絕緣阻抗，繼電器狀態(tài)等一系列電池相關(guān)參數(shù)進行實時監(jiān)測或計算，并根據(jù)這些參數(shù)判斷目前電池的狀態(tài)，以進行相應(yīng)的操作，防正電池的過充或過放。·2）電池充放電管理：在電池的充電或放電的過程中，根據(jù)環(huán)境狀態(tài)，電池狀態(tài)等相關(guān)參數(shù)對電池的充電或放電進行管理，設(shè)置電池的最佳充電或放電曲線（如充電電流，充電上限電壓值，放電下限電壓值等），實現(xiàn)電池過充，進蔽，垃流，是流，短路等保護3）單體電池間均衡：即為單體電池均衡充電，使電池組中各個電池都達到均衡一致的狀態(tài)。均衡器是電池管理系統(tǒng)的核心部件。
標(biāo)簽：
bms
主動均衡
被動均衡
上傳時間：
2022-07-02
上傳用戶：slq1234567890
