電源/新能源
提供權威的電源和新能源設計及電源管理資訊,內容有醫療/工業電源、LED驅動、數字電源、電池技術、太陽能光伏等電源技術方案,包括電源測試/仿真/認證、便攜電源、電動車/新能源、AC-DC與DC-DC轉換、基準/監控/保護電路等專業領域。基于DSP的三相SPWM變頻電源的設計
基于DSP的三相SPWM變頻電源的設計 變頻電源作為電源系統的重要組成部分,其性能的優劣直接關系到整個系統的安全和可靠性指標。現代變頻電源以低功耗、高效率、電...
2009-04-24 標簽:SPWM 2089
采用混合SET/MOSFET 的比較器的設計
據2001 年的國際半導體技術未來發展預示,到2016 年MOSFETs 的物理溝道長度將達到低于10nm 的尺寸[1],而這種尺寸條件會影響到MOSFETs 的基本工作原理,因此必須尋找新的替代器...
2009-04-24 標簽:比較器 814
采用PWM AC/AC變換的電壓補償器設計方案
本文介紹配電系統中針對重要用戶的一種新型電壓補償器,即在用戶自耦變壓器中加裝PWM AC—AC變換器,通過換流技術來驅動AC—AC變換器。當擾動發生使得電壓降低時,本裝...
2009-04-24 標簽:補償器 1703
采用PIC單片機芯片的三相半控整流電路設計
三相半控整流橋電路結構是一種常見的整流電路,其容易控制,成本較低。本文中介紹了一種基于 PIC690單片機與專用集成觸發芯片TC787的三相半控整流電路,它結合專用集成...
2009-04-24 標簽:整流 1801
DVS與AVS的原理及設計應用
在電池供電的嵌入式系統中,或采用高效率的電源管理芯片,或采用大容量的電池以解決能耗問題。但這兩種辦法已無法滿足快速增長的芯片動態功耗和靜...
2009-04-24 標簽:DVS 3280
A Comparison between Battery B
Abstract: Dallas Semiconductor nonvolatile (NV) SRAMs are backed up with an internal battery. Some other NV memories on the market, such as NOVRAMs, back up the data with internal EEPROM. This application note discusses the difference...
2009-04-24 標簽: 923
Battery Monitoring in NV SRAM
Abstract: As a prerequisite to this article, it is recommended that Application Note 505 be reviewed to gain a better understanding of the general behavior of lithium coin-cell batteries.Dallas Semiconductor offers a variety of pro...
利用MAXQ3210產生壓電信號
摘要:MAXQ3210微控制器集成了一個壓電揚聲器驅動器,以固定頻率驅動高音揚聲器。本應用筆記演示了怎樣改動揚聲器驅動器反饋單元,利用軟件來產生各種頻率信號。 ...
電源管理與使用的高速微控制器-Using Power Man
Abstract: Power consumption in battery-backed systems employing microcontrollers is discussed in this application note. Most Dallas Semiconductor high-speed microcontrollers, including the DS87C520, DS89C450, DS80C400 and DS5250 utilize va...
凌力爾特公司推出4通道12位/10位/8位DAC LTC26
凌力爾特公司 (Linear Technology Corporation) 推出 4 通道 12 位、10 位和 8 位軌至軌數模轉換器 (DAC) LTC2634,該器件在 3mm x 3mm QFN 和 MSOP 封裝中集成了一個精確的基準。LTC2634 是凌力爾特公司...
2009-04-23 標簽:凌力爾特 685
DC/DC輻照損傷與VDMOS器件噪聲相關性研究
大量的研究表明,低頻噪聲除了與產品性能有關之外,還與產品質量和可靠性密切相關。國內外出現了一系列使用低頻噪聲特別是1/f噪聲表征器件可靠性的方法,這些器件不...
2009-04-23 標簽:DC/DC 812
上網本電源管理系統的設計挑戰
上網本的電源管理系統可分為以下幾部分:1. 電池充電和管理;2. CPU 處理器供電;3.系統5V/3.3V供電;4. I/O和顯卡供電;5. 顯示背光供電;6. DDR存儲器供電。 &nb...
2009-04-23 標簽:電源管理 689
Maxim為什么選擇設計單片NV SRAM模塊
摘要:為了理解Maxim的單芯片模塊設計原則,首先需要知道電池備份存儲器的開發歷史。 開發NV SRAM的目的是生產一種類似于IC的混合存儲器產品,利用低功耗SRAM配合鋰...
Battery-Switchover Circuit Acc
Abstract: Portable systems often require operation from batteries or from a wall adapter. The MAX8865 low-dropout (LDO) linear regulator is used to provide the switchover function while supplying a regulator 2.84V that can deliver 100mA. ...
2009-04-23 標簽: 1212
大型電容器替代備用電池-Large Capacitor Re
Abstract: Use a supercap to reduce cost of simple battery backup circuits. In low-power systems that require a battery backup switchover circuit during brownout conditions, a supercap may provide adequate power to maintain memory operation...
2009-04-23 標簽:電容器 1017
PC Chipset Power Fail and Rese
Abstract: The following application note discusses the advantages of using the DS1632 PC Power Fail and Reset Controller to consolidate various power management functions into one device vs. using discreet components. The DS1632 performs c...
2009-04-23 標簽:Chipset 1933
在斷電時如何保存數據-How to Save Data Du
Abstract: The following application note discusses how the DS1233 can be used to save data during a power failure without corrupting the NV SRAM. For many memory systems requiring nonvolatile memory, Dallas Semiconductor ...
2009-04-23 標簽:數據 2251
微電路具有自動關機和低電池鎖定功能-Micropower C
Abstract: The following application note provides a circuit that automatically performs shutdown, power-up, and low-battery lockout functions without the need for software control. This micropower circuit provides shutdow...
2009-04-23 標簽:微電路 1067
Switching Between Battery and
Abstract: The following application note discusses a circuit that switches power sources efficiently without switching noise using the MAX6326. It discusses the advantages of using this technique over a simple diode-ord method. ...
最大限度地延長電池壽命,減少更換-Maximize Batt
Abstract: The MAX6326 microprocessor supervisor is used in an application to provide a battery switchover circuit when the wall adapter is disconnected. The reset output drives an external MOSFET that is used as a switch. This switchover c...
2009-04-23 標簽: 595
低成本供應交流-Low-Cost AC Supply
Abstract: The following application note discusses a low-cost solution to implement a 3V, 3.3V or 5V logic supply from AC power. It uses the MAX6330 shunt regulator which can supply up to 50mA as well as offering a reset output (power-on r...
2009-04-23 標簽:電源 838
Battery Monitoring in NV SRAM
Abstract: As a prerequisite to this article, it is recommended that Application Note 505 be reviewed to gain a better understanding of the general behavior of lithium coin-cell batteries.Dallas Semiconductor offers a variety of pro...
2009-04-23 標簽:Battery 1921
上電復位與相關監控功能
摘要:本文討論用于單電源或雙電源處理器的上電復位功能和門限電壓的選擇策略,另外,還探討了手動復位、電源失效和低電壓檢測等功能。文中闡述了避免使用分立POR和處理器...
2009-04-23 標簽:復位 864
高可靠系統的電源電壓監控和排序
摘要:該應用筆記說明高可靠系統中合理監控電源電壓和電源排序的必要性,給出了監控器的選擇標準,并說明上電復位(POR)電路、多電壓監控和余量功能的必要性。另外,還討論了...
過壓保護的備用電路: 技巧和竅門
摘要:過壓保護(OVP)器件用于保護后續電路免受甩負載或瞬間高壓的破壞,在某些特定的應用中,基本的過壓保護電路不足以勝任器件保護的要求,通常有以下兩種需求。第一,電路...
2009-04-23 標簽:備用電路 819
Boost Converter Yields Orderly
Some microprocessor (µP) systems require more time for shutdown than is provided by conventional circuits for power-fail detection. Between first warning and the actual loss of power, such systems have extensive "housekeeping" tasks ...
2009-04-23 標簽:Converter 1723
編輯推薦廠商產品技術軟件/工具OS/語言教程專題
| 電機控制 | DSP | 氮化鎵 | 功率放大器 | ChatGPT | 自動駕駛 | TI | 瑞薩電子 |
| BLDC | PLC | 碳化硅 | 二極管 | OpenAI | 元宇宙 | 安森美 | ADI |
| 無刷電機 | FOC | IGBT | 逆變器 | 文心一言 | 5G | 英飛凌 | 羅姆 |
| 直流電機 | PID | MOSFET | 傳感器 | 人工智能 | 物聯網 | NXP | 賽靈思 |
| 步進電機 | SPWM | 充電樁 | IPM | 機器視覺 | 無人機 | 三菱電機 | ST |
| 伺服電機 | SVPWM | 光伏發電 | UPS | AR | 智能電網 | 國民技術 | Microchip |
| 開關電源 | 步進電機 | 無線充電 | LabVIEW | EMC | PLC | OLED | 單片機 |
| 5G | m2m | DSP | MCU | ASIC | CPU | ROM | DRAM |
| NB-IoT | LoRa | Zigbee | NFC | 藍牙 | RFID | Wi-Fi | SIGFOX |
| Type-C | USB | 以太網 | 仿真器 | RISC | RAM | 寄存器 | GPU |
| 語音識別 | 萬用表 | CPLD | 耦合 | 電路仿真 | 電容濾波 | 保護電路 | 看門狗 |
| CAN | CSI | DSI | DVI | Ethernet | HDMI | I2C | RS-485 |
| SDI | nas | DMA | HomeKit | 閾值電壓 | UART | 機器學習 | TensorFlow |
| Arduino | BeagleBone | 樹莓派 | STM32 | MSP430 | EFM32 | ARM mbed | EDA |
| 示波器 | LPC | imx8 | PSoC | Altium Designer | Allegro | Mentor | Pads |
| OrCAD | Cadence | AutoCAD | 華秋DFM | Keil | MATLAB | MPLAB | Quartus |
| C++ | Java | Python | JavaScript | node.js | RISC-V | verilog | Tensorflow |
| Android | iOS | linux | RTOS | FreeRTOS | LiteOS | RT-THread | uCOS |
| DuerOS | Brillo | Windows11 | HarmonyOS |







































