Our design: Current Model DC-DC Buck Converter mainly aims at this market requirement.

本文所设计的电路：电流模式DC - DC降压芯片，正是针对这一市场需求设计的高效低成本芯片。

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Based on this new model, steady state DC analysis and small signal AC analysis can be used to analyse all kinds of converters.

基于新的模型，对各种直流开关转换器均能进行直流稳态分析和交流小信号分析。

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The QSS converter model in account of unsymmetric commutating voltages is developed for DC system.

对直流系统开发了计及换相电压不对称的QSS换流器模型。

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Between data logs, rebuttals and general drama, it's easy to get confused: can a Tesla Model S make the trek from Washington DC to Connecticut?

ENGADGET

Hopefully the infrastructure will have grown by then as well -- Tesla's already working on DC "superchargers" compatible with the Model S and capable of recharging its batteries at a rate of 300 miles of range per hour of charge.

ENGADGET: Tesla Model S first drive: the sports sedan goes electric (update: video)

America's marines are creating a smaller model FOB at their base in Quantico, near Washington, DC, to test systems for deployment in Afghanistan by mid-2010.

ECONOMIST: Monitor