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PCB相关  高速电路传输线效应分析与处理

随着系统设计复杂性和集成度的大规模提高，电子系统设计师们正在从事100MHZ以上的电路设计，总线的工作频率也已经达到或者超过50MHZ，有一大部分甚至超过100MHZ。目前约80% 的设计的时钟频率超过50MHz，将近50% 以上的设计主频超过120MHz，有20%甚至超过500M。当系统工作在50MHz时，将产生传输线效应和信号的完整性问题；而 ...

https://www.eeworm.com/dl/501/22268.html

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PCB相关  SM320 PCB LAYOUT GUIDELINES

Silicon Motion, Inc. has made best efforts to ensure that the information contained in this document is accurate andreliable. However, the information is subject to change without notice. No responsibility is assumed by SiliconMotion, Inc. for the use of this information, nor for infringements of pa ...

https://www.eeworm.com/dl/501/22294.html

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PCB相关  开关电源EMI设计(英文版)

Integrated EMI/Thermal Design forSwitching Power SuppliesWei ZhangThesis submitted to the Faculty of theVirginia Polytechnic Institute and State Universityin partial fulfillment of the requirements for the degree of Integrated EMI/Thermal Design forSwitching Power SuppliesWei Zhang(ABSTRACT)This wor ...

https://www.eeworm.com/dl/501/22307.html

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PCB相关  pci e PCB设计规范

This document provides practical, common guidelines for incorporating PCI Express interconnect layouts onto Printed Circuit Boards (PCB) ranging from 4-layer desktop baseboard designs to 10- layer or more server baseboard designs. Guidelines and constraints in this document are intended for use on b ...

https://www.eeworm.com/dl/501/22314.html

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电源技术  Solutions for LED Driver Overvoltage Protection

Boost LED drivers are often used to drive LEDs in series. If an LED fails while open,overvoltage protection (OVP) is necessary to avoid the damage to a boost integrated circuit (IC) or output capacitor. This application report presents the solutions to increase the TPS61043 LED driver OVP threshold.

https://www.eeworm.com/dl/505/22641.html

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电源技术  模块电源功能性参数指标及测试方法

　　模块电源的电气性能是通过一系列测试来呈现的，下列为一般的功能性测试项目，详细说明如下：电源调整率(Line Regulation) 负载调整率(Load Regulation) 综合调整率(Conmine Regulation) 输出涟波及杂讯(Ripple & Noise) 输入功率及效率(Input Power, Efficiency) 动态负载或暂态负载(Dynamic or Transient Response) ...

https://www.eeworm.com/dl/505/22842.html

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电源技术  LED的电源管理

A light-emitting diode (LED) is a semiconductor device that emits narrow-spectrum incoherent light when forward-biased.The color of the emitted light depends on the chemical composition of the semiconductor material used, and can benear-ultraviolet, visible or infrared. LEDs are more prevalent tod ...

https://www.eeworm.com/dl/505/23069.html

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电源技术  电源工程师-电路设计中的英雄

Abstract: We don&#39;t expect manufacturers to produce clothes that in one size that fits everyone. In thesame way, one ESD component can&#39;t solve all issues&mdash;each application has different ESD requirements.Knowing that "one size fits all" cannot apply to power design, the power designer, ...

https://www.eeworm.com/dl/505/23206.html

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电源技术  智能电网安全保护

Abstract: Stuxnet, a sophisticated virus that damaged Iran&#39;s nuclear capability, should be an eye openerfor the world. We can choose to learn something very narrow (how to combat the Stuxnet virus) or wecan choose to focus on the larger goal of thwarting the next type of creative cyber attack. ...

https://www.eeworm.com/dl/505/23219.html

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电源技术  电平转换控制功率MOSFET

Abstract: Some power architectures require the power supply sequencer (or system manager) to controldownstream power MOSFETs to allow power to flow into branch circuits. This application note explains howsystem power sequencing and level shifting can be accomplished using a low-voltage system mana ...

https://www.eeworm.com/dl/505/23332.html

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