When it comes to MOSFET datasheets, you have to know what you’re looking for. While certain parameters are obvious and explicit (BVDSS, RDS(ON), gate charge), others can be ambiguous at best (ID, SOA curves), while others can be downright useless at times (see: switching times).
In complicated power designs, metal-oxide semiconductor field-effect transistor (MOSFET) selection has a tendency to be somewhat of an afterthought. While it’s just a three-pin device, appearances can be deceiving and trying to select the correct MOSFET or “FET” can be a task more complicated than you might think. In this 7-part blog series, we analyze a variety of typical FET applications, from power supply to motor control, and address the various concerns and trade-offs that dictate the FET selection process.
Control theory is often thought to be difficult to understand and theoretical approaches usually have lots of Mathematics and talk about Loop Gain, complex frequency, H(s), G(s) and so on.
Learn about solutions that pair the flexibility of digital power control with C2000 MCUs and in-line current sensing with the high-power efficiency of GaN.
Riding Out Automotive Transients : Architecting Front End Power Conversion Stage for Automotive Off-Battery Loads
With rapidly expanding electronic content in latest generation of cars, there is an ever increasing need for power conversion from the car battery rail. The 12-V battery rail is subject to a variety of transients. This presents a unique challenge in terms of the power architecture for off-battery systems. This presentation introduces the different types of transients that occur in automotive battery rails, the causes of those transients, and the standards and specifications defining the test conditions for those transients.
For anti-tampering, it is common to try to detect the presence of a strong magnet. In this section, we will cover the use of hall sensors for low-power detection of strong magnetic fields in three dimensions. Details on our magnetic tamper detection reference design, TIDA-00839, will be provided as well as some of the design considerations that were kept in mind when creating this reference design.
In this section, we will cover how to harden a meter against these magnetic tamper attacks by using shunts for current sensors. For poly-phase implementations, I will go over how to use isolated delta sigma modulators to add the necessary isolation to use shunt current sensors and create magnetically immune poly-phase energy measurement systems. The TIDA-00601 and TIDA-01094 reference designs, which show how to implement a poly-phase isolated shunt measurement system, will be discussed as well as the associated AMC1304 high-side power supplies used in these designs.
Power Switching Device Cannot Drive Themselves - Mastering the Art of High Voltage Gate Driver Design in UPS, Telecom, and Servers
We live in a world where designers are constantly pursuing higher efficiencies and higher power densities. Our customers want more power out with less power loss, while achieving smaller solution sizes! They strive to reduce switching losses while maintaining signal integrity. The need for higher efficiency and power density is a trend seen across isolated and non-isolated power systems in Uninterruptible Power Supplies (UPS), Telecom Rectifiers, and Server PSUs.
Learn about MicroSiP power module construction and how they have greatly increased the power density of power supplies over the years. See the evolution of discrete power converters to their MicroSiP power module counterparts. Specific comparisons and tradeoffs for the TPS82130, TPS82085, and TPS82671 are discussed.
Why should you understand power management?
Applications Engineer Jason Tao discusses PFC basics, topology comparisons and design considerations to achieve a cost-optimized and efficient PFC design.