Subtle Yet Unrecognized Low Power Design Techniques: Stack Effect Continuing from the previous discussion: We previously explained low power design techniques such as Clock Gating and Data Gating. Both can reduce the dynamic power consumption of circuits. The former can turn off the input clock signal of certain modules when they are idle, thereby reducing … Read more
In robotic applications, there is a significant demand for controlling small power servo motors. The combination of PreDriver + MOS presents challenges in size and cost, and most products that integrate MOS using BCD technology are H-bridges, leading to less flexibility in many applications.The Texas Instruments TI BLDC driver DRV8313 integrates MOS using BCD technology, … Read more
As the “cornerstone” of the electronic information industry, the working principles of semiconductor devices conceal the underlying secrets of chip operation. Shi Min’s “Physics of Semiconductor Devices” is considered a classic in the industry, covering a complete knowledge system from the basics of semiconductors to MOS devices. Today, we will break down the core content … Read more
NCE Power is a leading domestic power semiconductor company, primarily producing MOSFETs and IGBTs, covering a full voltage range from 12V to 1700V, with over 3000 product variants! Its technology is comparable to international giants, such as shielded gate MOSFETs and super junction MOSFETs, which are used in high-end applications like photovoltaic inverters, electric vehicle … Read more
π Follow “Mr. Power” for insights on switch-mode power supplies π 1 / Introduction /In the previous article [Discovering a Strange Phenomenon | Why the BOOST Chip LM5155 Lacks an EN Pin?] we shared many instances of BOOST chips lacking an EN pin.As some friends mentioned, this article continues to share that many BOOST chips, … Read more
Current Formula of MOS As shown in the figure, for an NMOS, we first make a one-dimensional assumption, equivalently treating it as an NPN semiconductor junction, considering only the variation of current along the channel in the x-direction. For this model, the current through can be calculated as: After applying voltage, the voltage difference at … Read more
Introduction:The efficient operation of power electronic systems relies on various power semiconductor devices. A thorough understanding of the physical structure of power semiconductor devices is beneficial for grasping their working principles, understanding their charge transfer paths and processes, and laying a solid foundation for further efficient applications.This article shares the physical fundamentals of power semiconductors..γAll … Read more
Definition of Threshold Voltage The threshold voltage, also known as the turn-on voltage, is one of the key parameters of MOS devices. It defines the minimum gate bias required to form a conductive channel between the source and drain, even when the substrate surface (the semiconductor surface) is strongly inverted, which requires the gate voltage … Read more
uPI Semiconductor | High-density power and power devices, providing smaller size and higher efficiency power solutionsIntroductionFrom motherboards to graphics cards, from battery management to GaN applications, uPI Semiconductor focuses on high-density power and high-efficiency power devices, providing critical power solutions for computing, graphics, high-performance computing, and mobile terminals.1. Company OverviewuPI Semiconductor was established in 2005 … Read more
NOR Flash Storage Principles: Detailed Explanation of the Storage Mechanism of 0s and 1s NOR Flash, as a key non-volatile memory in embedded systems, has a storage mechanism based on the physical characteristics of floating MOSFETs. This article systematically analyzes its storage unit structure, operational principles, and technical constraints. 1. Storage Unit: The Physical Basis … Read more