VBsemi

  The thermal management system (TMS) in modern electric and high-performance vehicles is no longer a simple auxiliary function. It is a critical system directly impacting battery longevity, powertrain efficiency, cabin comfort, and overall vehicle range. The core of an advanced TMS lies in its electronic controllers for pumps and fans, which demand a power chain offering high efficiency for energy savings, high power density for compact packaging, extreme reliability under harsh automotive conditions, and intelligent, precise control. The selection of core power switching devices forms the physical foundation for achieving silent operation, responsive thermal regulation, and minimized quiescent energy drain. The challenge is multi-faceted: How to minimize conduction and switching losses in continuously modulated pumps and fans? How to ensure long-term reliability in under-hood environments with temperature extremes, humidity, and constant vibration? How to integrate protection, di...

  As high-end forest firefighting Electric Vertical Take-Off and Landing (eVTOL) aircraft evolve towards longer endurance, heavier payload capacity (for water/retardant), and fail-operational reliability, their internal electric propulsion and power distribution systems are the core determinants of mission success and safety. A meticulously designed power chain is the physical foundation for these aircraft to achieve robust vertical lift, efficient cruise, and unwavering durability under extreme thermal, vibrational, and emergency operational conditions. Building such a chain presents critical aerospace challenges: How to maximize power-to-weight and power-to-volume ratios without compromising thermal performance? How to ensure absolute reliability of power semiconductors under rapid pressure changes, intense vibration, and potential thermal shock from external fire environments? How to architect fault-tolerant, high-voltage safety and thermal management within severe space constra...

  Against the backdrop of increasing vehicle electrification and security integration, the steering column lock (SCL) system, as a critical safety and anti-theft actuator, sees its performance directly determined by the capabilities of its motor drive and power management circuitry. The lock/unlock motor driver, power distribution switches, and protection circuits act as the system's "muscles and nerves," responsible for providing robust, precise, and failsafe torque while ensuring intelligent control and ultra-low quiescent power consumption. The selection of power MOSFETs profoundly impacts system reliability, package size, thermal behavior, and functional safety compliance. This article, targeting the demanding automotive application scenario of SCL controllers—characterized by stringent requirements for 12V/24V battery load dump survival, high inrush current handling, compactness, and AEC-Q101 qualification—conducts an in-depth analysis of MOSFET selection considerati...

  With the advancement of robotics and autonomous systems, high-end fully autonomous humanoid robots with self-swapping battery capabilities represent the pinnacle of integrated mobility and manipulation. Their actuation, power management, and charging systems, serving as the core of energy conversion and motion control, directly determine the robot's operational endurance, dynamic response, thermal performance, and long-term reliability. The power MOSFET, as a key switching component in these systems, profoundly impacts overall power efficiency, power density, thermal management, and service life through its selection. Addressing the rigorous demands of 7×24 continuous operation, high peak currents, and stringent safety in humanoid robots, this article proposes a complete, actionable power MOSFET selection and design implementation plan with a scenario-oriented and systematic approach. I. Overall Selection Principles: System Compatibility and Balanced Design for 7×24 Operation MOS...