模式可选的新型能量回收电路

A New Mode Optional Charge Recovery Circuit

基于绝热计算原理的能量回收电路是克服数字电路功耗CV2壁垒的有效途径。提出了一种MOCAL(Mode Optional CAL)电路,在CAL的基础上增加了对电路工作模式的控制,从而弥补了大部分传统绝热电路的缺陷,可以直接用来替换CMOS电路中的相应部分,降低了功耗,并节省了芯片面积。采用MOCAL结构,经过HSPICE验证,并且与CAL反相器链的功耗进行了比较。结果显示,在20 MHz频率下,MOCAL反相器链的功耗损失仅为CAL的23%,证明了设计的有效性。

Charge recovery circuit based on adiabatic computation principle is an effective way to overcome the limitation of CV^2 power barrier in digital circuit. A mode optional clocked adiabatic logic （MOCAL） is proposed, which overcomes disadvantages of most traditional adiabatic logic circuits by adding mode selection for circuit operation. It can be used directly to replace corresponding portion of CMOS logics. This could also reduce power consumption and save chip area. An inverter chain based on MOCAL logic was verified using HSPICE, and its power dissipation was compared with that of CAL based inverter chain. HSPICE simulation indicates that MOCAL structure consumes only 23% of the power consumed by CAL based inverter chain, which validates the effectiveness of the design.