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Understanding MOSFET datasheets

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).

Selecting a MOSFET

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.

Introduction

Introduction into the design considerations and power supply design considerations

Power Topologies

Power electronics enables the activities of our everyday lives. At the heart of this world of power are converters that step voltages up or down to higher, more efficient levels or to lower, safer voltages. Power converters are broken up into two main categories, non-isolated converters and isolated converters.

High Frequency Challenges

Learn about how to overcome high frequency challenges using TI's series capacitor buck converter.

Tech Days

Overview and Demos

Were you unable to attend Tech Day but want to view the featured content? Did you attend and want to revisit a particular session? This series contains many of the sessions from the embedded processing, power supply design, signal chain, and wireless connectivity tracks. In addition, this series features recordings of select TI demos from the exhibitors hall.

Tech Days

Signal Chain

Were you unable to attend Tech Day but want to view the featured content? Did you attend and want to revisit a particular session? This series contains many of the sessions from the signal chain track. In addition, this series features recordings of select TI demos from the exhibitors hall.

Tech Days

Power

Were you unable to attend Tech Day but want to view the featured content? Did you attend and want to revisit a particular session? This series contains many of the sessions from the power supply design track. In addition, this series features recordings of select TI demos from the exhibitors hall.

TPS23861 PoE MSP430 Reference Code Training: Part 1

In this video, you will learn more about:

  • the TPS23861 PSE (Power Sourcing Equipment) controller
  • the three operating modes for the TPS23861
  • when you need to use the MSP430 reference code
  • how to get started

TPS23861 PoE MSP430 Reference Code Training: Part 2

In this video, you will learn more about:

  • the features implemented and high-level architecture of the reference code
  • the definition and archteciture of port power management
  • how to test and modify the reference code

Detecting magnetic tampering using hall-effect sensors

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.  

Hardening a meter against magnetic tamper attacks

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.

Motor Drives in Appliances: Why Transforming from High Voltage to Low Voltage?

Learn the opportunities of motor drives in appliances and understand why there is clear transformation happening from high voltage to low voltage motor drives

Brushed DC and Stepper Motor Drives: Architectures, Challenges and Solutions

Learn the different power stage architectures and topologies for low voltage brushed DC and stepper motor drives and understand typical system design challenges and differentiated solutions from Texas Instruments.

Brushless DC Motor Drives: Architectures, Challenges and Solutions

Learn the different power stage architectures and topologies for low voltage brushless DC motor drives and understand typical design challenges and differentiated solutions with integrated motor drivers.

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