Current - mode dc / dc converter adds a current feedback loop on the base of voltage - mode control , achieving both current and voltage feedback loop control 电流模式dc / dc变换技术是在电压模式控制的基础上,增加了电流反馈环,实现了电压和电流的双环反馈控制。
In the last section , as the design methods of high - order current - mode integrated filters , the equivalent circuits and the multi - loop feedbacks are systematically expounded 最后本文详细介绍了高阶电流模式滤波器的系统方法,阐述了等效电路替代法和多环反馈法,给出了设计的具体步骤。
Current conveyor , as a circuit component which has lots of characters and works as operational amplifier , has been widely used in analog integrated circuit 随着模拟集成电路的高速发展,电流传送器作为具有多种特性且与运算放大器相似的一种基本电路器件,广泛的运用于电流模式的模拟集成电路。
The design of the whole chip topology and the application circuit is carried out at the request of the specific use and the circuit introduces the typical structure of current mode pwm controller to seven sub - blocks 根据具体使用要求进行了电路的总体结构及应用电路设计,采用典型的电流模式pwm控制器的结构,将整体电路划分为七个模块。
At last , two methods to design current mode active filters are presented . the spice simulation of the filters designed with the two methods confirms the two methods are correct and effective 全面归纳了基于电流传送器的有源滤波器设计方法，并详细介绍了两种电流模式滤波器的设计方法? ?伴随网络法和跳耦法，给出了滤波器的设计实例和spice仿真。
This paper summarizes the design ways of active filter based on the current conveyors in detail , and three ways which can deduce current - mode continuous time filters from voltage - mode active filters 全面归纳了基于电流传送器的有源滤波器设计方法，研究了由电压模式有源rc滤波器导出使用电流传送器( cc )的电流模式连续时间滤波器的三种不同的方式。
The dual mode transmitter can be configured in voltage mode supporting 12mbp / s data rate or current mode supporting 480mbp / s data rate . it reduces greatly the chip area resulting from this architecture 双模发送器的设计，采用电压模式和电流模式实现了全速( 12mbp s )和高速( 480mbp s )模式的兼容，取代了传统的全速和高速发送器分开设计的模式，大大节省了芯片的面积。
This system could realize three special cwt , and the system , which worked as current mode circuits due to the use of the log - domain circuits technology , has characters such as low voltage , low power dissipation and flexible adjustability within a wide frequency range 该系统可以同时实现3类特殊的连续小波变换，且由于对数域设计技术的引入，电路工作在电流模式状态下，具有低电压、低功耗以及灵活的宽频段可调性等特点。
It is based on umc 0 . 6 m bcd process . a built - in power mosfet with low on - resistance and a lossless current sensing circuit on chip provide fast and precise current mode control . furthermore , the whole losses decrease and high efficiency up to 90 % can be obtained 它采用umc0 . 6 mbcd工艺制程,利用内置的低导通电阻功率mosfet和内置的无损耗电流感应电路实现了快速精确的电流模式控制,同时也降低了功耗,提高了转换效率,典型的效率可达90 % 。
Become a kind of new electronics circuit - current - mode circuit . it is replacing the traditional design method of the voltage - mode in the high frequency high - speed signal processing realm 。 this thesis mainly discussed the modified second - generation current conveyors based on the current - mode kinds of new cuicuit components , they are stronger modified standard current - mode parts in fuctions on this foundation . mainly including the modified differential difference current conveyor ( mddccii ) 、 the fully balanced second generation current conveyor ( fbccii ) 、 ( full balances ) four - terminal floating nullor ( fbftfn ) and the current differencing buffered amplifier ( cdba ) , they are all function very strong standard current - mode parts , they all can provide some circuit functions of better than general operation amplifier , because they have the voltage importation and the current importation , therefore use it since can carry out the voltage - mode signal processing circuit expediently , can also carry out the current - mode signal processing circuit expediently , and have to increase the benefit bandwidth to accumulate more widely than the voltage - mode , but have their advantages more according to the current - mode filter of the modified current conveyor , because it constitutes in brief , the filter wave function is stronger and they are better than in general use operation amplifier of many advantages , be easy to composing for example 、 high speed 、 frequency bandwidth 、 the power supply voltage requests low 、 consume small , the impedance is different from etc . advantages , otherwise they have biggish dynamic range , and flexible circuit synthesize , so they are the best active parts 从第二代电流传输器ccii入手,重点研究了以下几种改进型的第二代电流传输器:改进的差动差分电流传输器mddccii 、全平衡第二代电流传输器fbccii 、多输出四端浮地零器ftfn 、全平衡四端浮地零器fbftfn 、电流差分缓冲放大器cdba的电路结构及其模型。然后在此基础上系统地研究了基于这几种改进型的第二代电流传输器的滤波器的设计方法,主要方法和结果如下:利用mddccii设计了差分式连续时间电流模式低通、带通滤波器;电流模式跳耦结构考尔低通滤波器;利用fbccii设计了带通二阶节滤波器及电流模式双二阶通用滤波器;设计了基于多输出端ftfn的电流模式二阶通用滤波器电路;通过数字化开关选择的基于fbftfn的电流模式通用滤波器;设计了基于最少个数电流缓冲放大器(两个cdba )的多功能通用电流模式滤波器及其在非理想因素情况下分析。设计滤波器的主要方法是采用级联设计、运算模拟(信号流图法)和反馈设计(跳耦法) 。
