chip n. 1.碎片,削片,薄片;碎屑;薄木片;无价值的东西。 2.(陶器等的)缺损(处)。 3.(赌博用)筹码;〔pl.〕〔英俚〕钱。 4.〔pl.〕〔口语〕炸马铃薯片。 5.(作燃料的)干牛[马]粪。 6.集成电路唱片[块]。 7.〔口语〕小粒金刚石[水晶]。 a chip of [off] the old block (脾气等)完全像父亲的儿子;一家的典型人物。 (as) dry as a chip 枯燥无味的。 buy chips 投资。 cash [pass] in one's chips 把筹码兑现;〔俚语〕死。 chip in porridge [pottage, broth] 无关重要的东西,可有可无的东西。 do not care a chip for 毫不介意。 have a chip on one's shoulder 〔美俚〕盛气凌人;好打架;好争吵。 have one's chips on 孤注一掷。 in the chips 〔美俚〕有钱的。 let the chips fall where they may 不管后果如何。 when the chips are down [get on the line] 万不得已的时候,紧急时候。 vt. (-pp-) 1.切,削,凿,刻。 2.把…削成薄片;弄缺(刀口,瓷器等)。 3.〔口语〕戏弄;挖苦。 4.(鸡雏等)啄碎(蛋壳)。 vi. 1.出现缺口。 2.碎裂,瓦解,破碎 (off)。 chip at 对准…打,谩骂。 chip in 〔口语〕插嘴,加入(打架等);捐助;拿钱赌 (They all chipped in to buy it. 大家都要买了)。 chip off 切下来,削下来。 n. (摔跤时)用绊腿把对方摔倒的一种技巧。 vt. (-pp-) (用绊腿)摔倒(对方)。
It mainly contains chip circuit and the periphery circuit of it , power circuit , speech input circuit , speech output circuit , debugging circuit and rs232 circuit 包括:芯片及其外围电路、电源电路、语音输入电路、音频输出电路、系统调试电路、串口通讯电路等。
Based on the charge pump principle analysis and circuit design in the beginning chapters , the author simulated all the sub block circuits and whole chip circuit by applying eda tools hspice and viewlogic 在完成电路原理分析与电路设计的基础之上,还应用eda软件hspice对各个子电路模块和整体电路进行了功能仿真及量化模拟。
Based on that , the author simulated most of the sub - block circuits and whole chip circuit by applying eda tools hspice . the simulation results indicate that the ic has achieved the expectation , 理论分析、仿真结果和芯片测试数据表明,在典型情况下,该电路的电流控制精度相对误差和匹配相对误差可以控制在0 . 5 %以内,达到了预定设计目标。
The author pays more attention to the analysis and design on the following sub - circuits : oscillator , comparator , hysteresis comparator , chip enable , etc . on completing the principle analysis and circuit design , the sub - circuits and whole chip circuit are verified with the eda tools hspice 其次在电路设计中,作者基于升压型dc / dc变换器和离散脉冲频率调制方式的基本原理并根据电路功能的需要,进行了控制电路的总体结构设计和子电路模块设计。
Consequently , an integrate switch mode power supply with high efficiency and good reliability can be realized by the controller with very few external parts . the fundamental principle of monolithic voltage - mode switching regulator is firstly introduced in this thesis , which is followed by a comparison between voltage - mode and current - mode converters where the pros and cons of both converters are discussed in detail ; next , the global system architecture is proposed upon the design requirements and sub - block circuits are also introduced that focuses on several essential sub - blocks such as amp , wave , pwm control , psc , osc and vref . finally , all sub - circuits and the whole chip circuit are simulated by hspice whose results indicate that the circuit function and performance have perfectly satisfied the design requirements 在论文中,首先阐述了电压控制模式pwm开关电源的基本原理,对比了电流控制模式和电压控制模式,分析了各自的优缺点;随后根据设计要求进行了电路的总体设计,完成了各个子电路的原理分析,电路设计和仿真验证,重点阐述了误差放大电路、三角波发生电路、 pwm控制电路、节能控制电路、振荡电路和基准源电路的分析、设计和验证过程;最后,利用eda软件hspice对整体电路进行了功能仿真验证,仿真结果表明,本文完成了设计工作,达到设计要求。
Base on the boost principle analysis and circuit design in the beginning , the author simulated the sub - block circuits and whole chip circuit by applying eda tools hspice , the simulation result indicates that the ic has achieved the expectation of the function target and the electrical characteristics . although there were unavoidable disadvantages of this project , it is a worthwhile and valuable experience 在完成电路原理分析与电路设计的基础之上,作者应用eda软件hspice对各个子电路模块和整体电路进行了功能仿真及量化模拟,仿真结果均达到或优于预定指标,验证了作者在第二章中阐述的直流升压boost电路的设计理论,是设计理论与实践相结合的一次有价值的尝试。