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PCB相关  计算FR4上的差分阻抗(PDF)

Calculation of the Differential Impedance of Tracks on FR4 substrates There is a discrepancy between calculated and measured values of impedance for differential transmission lineson FR4. This is especially noticeable in the case of surface microstrip configurations. The anomaly is shown tobe due to ...

https://www.eeworm.com/dl/501/22297.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  为您的FPGA选择合适的电源

Abstract: There are many things to consider when designing a power supply for a field-programmablegate array (FPGA). These include (but are not limited to) the high number of voltage rails, and thediffering requirements for both sequencing/tracking and the voltage ripple limits. This application n ...

https://www.eeworm.com/dl/505/23418.html

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电源技术  电感开关稳压器提高输入电压

Abstract: Uses the MAX641 switching controller and an external discrete charge pump to step up the input voltage. This circuitcan service low loads and is efficient when the output is two, three, four times the input voltage. Adding the MAX627 MOSdriver can further increase the output current capa ...

https://www.eeworm.com/dl/505/24146.html

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电源技术  电源调整与虚拟地

Abstract: Rail splitting is creating an artificial virtual ground as a reference voltage. It is used to set the signalto match the op amp&#39;s "sweet spot." An op amp has the most linear- and distortion-free qualities at that sweetspot. Typically, the sweet spot occurs near the center between the ...

https://www.eeworm.com/dl/505/24151.html

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电源技术  如何保护集成FET的电源开关

Abstract: Some types of loads require more current during startup than when running. Other loads can be limited to a lower-powercurrent during startup but require a higher operating current. This article describes an application circuit that automatically adjusts apower circuit&rsquo;s overcurrent ...

https://www.eeworm.com/dl/505/24193.html

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电源技术  XAPP946-适用于Virtex-4 RocketIO MGT的开关电源

&nbsp; This document presents design techniques and reference circuits that power Virtex&trade;-4 FXRocketIO&trade; multi-gigabit transceivers (MGTs) operating at data rates below 3.125 Gb/s.When using multiple transceivers, it is sometimes preferred to power them from a switchingpower supply. H ...

https://www.eeworm.com/dl/505/24260.html

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电源技术  电池管理系统的多点温度测量方案

&nbsp; Abstract: It is critically important that lithium-ion battery stacks have a good battery-management system for monitoring many cellvoltages and cell temperatures. Without that monitoring, thermal runaway can lead to a battery explosion. This design idea presentsa low-power circuit that me ...

https://www.eeworm.com/dl/505/24265.html

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电源技术  100-15V TO 12V DCDC 原理图 PCB BOM表

高的工作电压高达100V N双N沟道MOSFET同步驱动 The D810DCDC is a synchronous step-down switching regulator controller that can directly step-down voltages from up to 100V, making it ideal for telecom and automotive applications. The D810DCDC uses a constant on-time valley current control architecture t ...

https://www.eeworm.com/dl/505/24277.html

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电源技术  使用5V电源的高分辨率视频解决方案

&nbsp; Video cable driver amplifi er output stages traditionallyrequire a supply voltage of at least 6V in order to providethe required output swing. This requirement is usuallymet with 5V supplies by adding a boost regulator or asmall local negative rail, say via the popular LT&reg;1983-3.Such ...

https://www.eeworm.com/dl/505/24316.html

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