New Transistor Model for Transition from Moderate to Strong Inversion and it's Applications for Design of CMOS Integrated Circuits with Fast Load and Supply Transients

从中度反转到强反转过渡的新晶体管模型及其在具有快速负载和电源瞬变的 CMOS 集成电路设计中的应用

• 批准号: RGPIN-2017-03719
• 负责人: Filanovsky, Igor
• 金额: $ 1.75万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=679883
• 关键词: New; Transistor; Model; Transition; Moderate; New; Transistor; Model; Transition; Moderate

The practical side of the proposed research consists of recommendations for design of power management system blocks providing fast response for instant loads and fast power supply transients. The results will be applicable in the areas of advanced mobile computer terminals, medical and environmental sensors, and automotive instrumentation equipment.***A MOS transistor supplies the current depending on the condition which is called “inversion”. The weak and moderate inversions provide low currents, the strong inversion means operation at high currents. Moderate inversion is increasingly important region for low power analog circuit design. The definition of weak inversion says that a MOS transistor operates in weak inversion if the gate-source voltage is less than the threshold voltage. This means that for the gate-source voltage larger than the threshold voltage transistor starts to operate in moderate inversion. With further increase of the gate-source voltage the transistor enters strong inversion. Yet a simple model of the transistor drain current operating in moderate inversion was absent. Starting from the so-called “reconciliation” model the author of the proposal was able to provide this model which allows a better control for transition from moderate to strong inversion. ***The application of this model for design and investigation of wide range of circuits: amplifiers, voltage regulators and voltage references is the first project goal.***The modern tendency is to use integrated circuits in two distinct modes of operation. In the first mode the circuit is not loaded and should itself consume as less power as possible. In the second mode the circuit should provide power to the load. When the circuit does not supply power the transistors should operate in weak or moderate inversion. When the load is applied the transistors should start to work nearly instantly in strong inversion. This is especially valid for the circuits in power management electronic systems.***The proposed model is suitable for design of fast-responding circuits with practically instant load-on and load-off transients. Developing a complex of such circuits is the second project goal.***The fast response is usually required for both load and power transients. The design for fast power transients is not sufficiently investigated; the methods used for this purpose may even destroy the circuit operation when the supply voltage is applied. During the power transients, the undesirable operation points may occur. The mechanisms of their occurrences are not clear.***The third project goal is to profoundly investigate the occurrence of such points in these complex transients and develop methods for their elimination.***In summary, the proposal will develop and investigate, on the basis of new transistor model, the circuits with fast load and power transients, methods of their design, and give recommendations for their reliable operation.

拟议的研究的实际方面包括针对电源管理系统块设计的建议，为即时负载和快速电源过渡提供了快速响应。结果将适用于先进的移动计算机终端，医疗和环境传感器以及汽车仪表设备的区域。弱反转和中度反转可提供低电流，强烈的反转意味着在高电流下运行。对于低功率模拟电路设计而言，中度反演越来越重要。弱反转的定义表明，如果栅极源电压小于阈值电压，则MOS晶体管在弱反转中工作。这意味着，对于大于阈值电压晶体管的栅极源电压开始以中等反转的形式运行。随着栅极电压的进一步增加，晶体管进入强反转。然而，从所谓的“和解”模型开始，该提案的作者能够提供该模型，从而可以更好地控制从中度到强反转的过渡。 ***该模型在广泛电路的设计和投资中的应用：放大器，电压调节器和电压参考是第一个项目目标。****现代趋势是在两种不同的操作模式下使用集成电路。在第一个模式下，电路未加载，并且本身应尽可能少的功率消耗。在第二种模式下，电路应为负载提供电源。当电路不提供电力时，晶体管应以弱或中反转的形式运行。当施加负载时，晶体管应开始几乎立即起作用。这对于电源管理电子系统中的电路尤其有效。***所提出的模型适用于使用几乎即时加载和负载瞬态的快速响应电路的设计。开发这种电路的复合物是第二个项目目标。快速功率瞬变的设计还不够充分研究；当应用电源电压时，用于此目的的方法甚至可能会破坏电路操作。在功率瞬变期间，可能会发生不良的操作点。 **** ****第三个项目的目标是深入研究这些复杂瞬态中此类点的发生，并开发了消除它们的方法。