在电路中,NMOS经常用作下管,S极接地,用G极来控制管子的导通截止,很方便。 NMOS用作上管时,因为S极电平不确定,即G极电平也不好确定,很不方便。 PMOS经常用作上管,S极接固定的VCC,用G极来控制管子的导通截止。 用作下管时,因为S极电源不确定,无法 ...
随着对器件的控制需求提升,越来越多的电源开关电路出现在设计中。这些设计的目的各有不同:有的需要快速开通与关断,有的需要低导通电阻+大电流,有的需要闲时0功耗。虽然应用场合不同,但做开关可是MOS的强项。 下面来介绍几种产品设计中常用的MOS做 ...
在电路中,NMOS经常用作下管,S极接地,用G极来控制管子的导通截止,很方便。 NMOS用作上管时,因为S极电平不确定,即G极电平也不好确定,很不方便。 PMOS经常用作上管,S极接固定的VCC,用G极来控制管子的导通截止。 用作下管时,因为S极电源不确定,无法 ...
为特定CMOS工艺节点设计的SPICE模型可以增强集成电路晶体管的模拟。了解在哪里可以找到这些模型以及如何使用它们。 本文引用地址: 我最近写了一系列关于CMOS反相器功耗的文章。该系列中的模拟采用了LTspice库中预加载的nmos4和pmos4模型。虽然这种方法完全 ...
For years—decades, in fact—the NMOS transistor world has been on cruise control. NMOS is naturally faster and its performance has scaled better than PMOS. PMOS has had a cost advantage. But lately, it ...
PMOS transistors are less vulnerable to substrate noise since they’re placed in separate wells; designers implement guard rings to attenuate the substrate noise propagation. However, substrate noise ...
X-Fab Silicon Foundries has added 375V power transistors to the devices available from its 180nm deep trench isolation BCD-on-SoI platform chip fab. The second generation of its XT018 super-junction ...
LONDON — The high electron mobilities of some III-V compounds is making them prime candidates for future NMOS channel materials, with an indium-based gallium-arsenide (InGaAs) likely to be the ...