电源设计应用
A Quick Guide To Voltage Refer
Abstract: This application note discusses the three basic voltage reference topologies and their advantages and disadvantages. Covered topics include 3-terminal series mode references (bandgap and buried zener) and 2-terminal shunt refe...
2009-02-22 1486
Negative-Resistance Load Cance
Negative-Resistance Load Canceller Allows Voltage Reference to Drive Heavy Loads Abstract: This application note discusses how to build a high output drive voltage reference without sacrificing tempe...
2009-02-22 1600
Miniature, Precision Negative
Abstract: This application note discusses how to build a negative voltage reference without using external resistors or a negative supply by simply combining a simple charge-pump inverter and a positive output voltage reference. ...
2009-02-22 1009
Controlling a Variable Voltage
Abstract: Semiconductor topic: Many linear and switched-mode power supplies and voltage regulators use a resistor network as feedback into the regulator to adjust the voltage output. This is typically done either by varying the values o...
2009-02-22 1715
Selecting the Right Series Vol
Abstract: This article provides an in depth analysis, procedure, and selection tables for selecting the optimum series voltage reference for voltage output DACs. It covers all of the important parameters such as: input supply voltage, r...
2009-02-22 1143
Accurate DC-DC Converter Minim
Whether squeezing the last millijoule from your battery or operating a cooler CPU board, the goal is to burn less power. For many loads the power dissipation varies as the square of the applied voltage, so one approach is simply to minimiz...
2009-02-22 1512
Multi-Range ADC Use Voltage Re
A data acquisition board, in order to provide flexibility, must be able to accommodate various input voltage ranges. Handling low amplitude signals generally requires an increase in the number of bits of resolution, increasing cost....
2009-02-22 572
P-FET Linear Regulator Has Low
P-channel MOSFETs (P-FETs), though more expensive than pnp transistors, are free of the dissipation loss associated with base drive in a pnp circuit. P-FETs also have a lower saturation voltage at light loads (Figure 1). In fact, th...
2009-02-22 1581
Encounter数字实现系统的先进节点技术
Cadence公司最新推出的Encounter Digital Implementation System采用领先的多CPU基础架构与高级存储器结构，实现了端到端并行处理流程，实现了极高的从RTL-to-GDSII的可调整性...
2009-02-17 873
灰色预测控制在有源滤波器中的设计应用
为了保证有源电力滤波器的工作性能，实时准确的检测出负载中的谐波分量，获取正确的谐波补偿信号至关重要。目前谐波电流检测的主要方法有基于瞬时无功功率理论、基...
2009-02-17 614
航天器DC/DC变换器的可靠性设计
卫星用DC/DC变换器的高可靠和长寿命，是确保其完成飞行使命的基本条件之一。但人们对DC/DC变换器可靠性的认识通常集中在元器件固有质量或产品组装工艺缺陷方面，往往忽略了...
2009-02-17 1215
采用FPGA电火花加工脉冲电源(智能脉冲电源)设计
分立元件电路设计复杂，电路调试困难，基于单片机或者是32位的嵌入式CPU的脉冲电源性能有了很大的提高，也具有了很高的智能性，但对于不同的处理器...
2009-02-12 1713
高速高密度PCB设计中电容器的选择
高速高密度PCB 设计中电容器的选择电容器是电子电路中的基本元件之一，有重要而广泛的用途。按应用分类，大多数电容器常分为四种类型：交流耦合，包括...
2009-02-10 977
军用电解电容器的应用可靠性选择
军用电解电容器的应用可靠性选择电容器一般由两个接近并相互绝缘的导体构成，是军用电子整机不可缺少的基础元件。在军用电子产品中，电解电容器占有...
2009-02-10 1309
开关电源中选取滤波电容的三个主要参数
开关电源中选取滤波电容的三个主要参数许多电子设计者都知道滤波电容在电源中起的作用，但在开关电源输出端用的滤波电容上，与工频电路中选用的滤波电...
2009-02-10 5043
滤波电容在嵌入式应用中的选择
滤波电容在嵌入式应用中的选择随着电容制造向更小型化封装应用的继续推进，一种高电容量、低ESR 及低电压应用的理想方案是3-D 多阳极涂层（conformal coated）...
2009-02-10 760
铝电解电容器选用指南
铝电解电容器选用指南铝电解电容的容体比较大，串联电阻较大，感抗较大，对温度敏感。它适用于温度变化不大、工作频率不高（不高于25kHz）的场合，可用于...
2009-02-10 1150
耦合电容和分布电容的选用
耦合电容和分布电容的选用从电路来说，总是存在驱动的源和被驱动的负载。如果负载电容比较大，驱动电路要把电容充电、放电，才能完成信号的跳变，在上...
2009-02-10 2439
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