开关电源相关专辑 119册 749MTop switch ic 58页 1.2M.pdf
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上传时间: 2014-05-05
上传用户:时代将军
switch Power Source 这是开关电路的ddb文件。。。。。。。。。。。。。。
上传时间: 2016-06-10
上传用户:Soulkeji
QCA8228 switch chip HDK
上传时间: 2017-10-25
上传用户:atherospaopao
The SP2526A device is a dual +3.0V to +5.5V USB Supervisory Power Control switch ideal for self-powered and bus-powered Universal Serial Bus (USB) applications. Each switch has low on-resistance (110mΩ typical) and can supply 500mA minimum. The fault currents are limited to 1.0A typical and the flag output pin for each switch is available to indicate fault conditions to the USB controller. The thermal shutdown feature will prevent damage to the device when subjected to excessive current loads. The undervoltage lockout feature will ensure that the device will remain off unless there is a valid input voltage present.
标签: High-Side switch Power Dual USB
上传时间: 2019-03-06
上传用户:bhitr
For many years prior to the 1970s, engineers designed and built switch mode power supplies (SMPSs) using methods based largely on intuitive and exper- imentally derived techniques. In general, these power supplies were able to achieve their primary goal of high-efficiency power conversion; unfortu- nately, due to the lack of adequate theoretical analysis techniques, many of these power supplies only marginally met their desired performance require- ments. In many cases, they were considered to be unreliable.
标签: Supplies switch Power Mode
上传时间: 2020-06-07
上传用户:shancjb
switch-Mode Power Supply
标签: switch-Mode Supply Power
上传时间: 2020-06-07
上传用户:shancjb
高压TSC(Thyristor switch Capacitor)装置是指额定工作电压为6kV-35kV晶闸管投切电容器补偿装置,是一种典型静止无功补偿器,其对增强系统稳定性、提高系统运行经济性,保证电压质量及改善电能质量都能发挥良好的作用。目前国内对高压TSC装置研制与生产还处于起步阶段,加速高压TSC装置的国产化,对在我国电力系统中早日推广与应用高压TSC装置具有重大意义。 首先在无功功率的测量上,如何在有谐波干扰等复杂环境下准确检测无功功率,本文采用了基于快速傅立叶变换的方法,可以很好的完成无功功率的采集。在主电路结构上,晶闸管开关阀是高压TSC装置的关键构成部件,高压TSC装置要求晶闸管开关应具有良好的电气性能,要求晶闸管开关应是有效和可靠的。本文通过晶闸管特性和串联技术的研究,给出了晶闸管串联开关的静态均压和动态均压方法,设计出合理使用的电路结构。通过仿真分析,验证了均压电路的效果。 电容器无涌流投入技术也是TSC主要研究点,由于在高压系统中器件两端承受的电压较高,低压TSC系统中常用的过零固态继电器或集成过零触发芯片满足不了耐压的需要,本文设计了专门的过零检测及触发电路,在器件两端电压过零时触发,避免了由于电容器残压过高而造成的巨大冲击电流,从而在硬件电路上实现电容器组的无过渡过程投切,电路简单可靠。同时,在控制策略上将几种投切判据进行了比较,采用了电压无功复合投切判据,以无功功率作为主判据,电压作为辅助判据,有效地克服了仅以功率因数作为投切判据的控制方式中的轻载时容易产生投切振荡而重载时容易出现补偿不充分的缺点。
上传时间: 2013-05-23
上传用户:6546544
CR6221 combines a dedicated current mode PWM controller with a high voltage power MOSFET. It is opti
上传时间: 2013-04-24
上传用户:brucewan
CR6228 combines a dedicated current mode PWM controller with a high voltage power MOSFET. It is opti
上传时间: 2013-05-16
上传用户:natopsi
P15V330 in video picel-rate switch applications
标签: P15V330
上传时间: 2013-04-24
上传用户:关外河山