Some examples of power MOSFETS application from this app note from IXYS Corporation. Link here (PDF) Applications like electronic loads, linear regulators or Class A amplifiers operate in the linear region of the Power MOSFET, which requires high power dissipation capability and extended Forward Bias Safe Operating Area (FBSOA) characteristics. Such mode of operation differs […]
Tag Archives: MOSFET
App note: Operation evaluation of ultra low ON resistance MOSFET supporting quick charge for 1 cell Lithium ion battery protection
ON semiconductor’s application note on faster charging of Lithium Ion batteries with consideration on heat suppression. Link here (PDF) Currently, because LiB (Lithium Ion Battery) is superior in current density and electromotive force, it becomes mainstream of batteries for mobiles such as smart phone. However, because LiB is weak at over-charge and over-discharge, a control […]
App note: Application precautions: Power MOSFET application notes
Toshiba’s application note on the things to consider when picking a power MOSFET. Link here (PDF) This document explains selecting MOSFETs and what we have to consider for designing MOSFET circuit, such as temperature characteristics, effects of wire inductance, parasitic oscillations, avalanche ruggedness, and snubber circuit.
Failure analysis of a dead MOSFET and a power diode
This video discusses the failure analysis of a MOSFET and power diode by Electronupdate.
App note: Power MOSFET in high-side operating modes, possible failure modes, and failure signatures
App note from Vishay on high-side MOSFET failures investigation leads to one of the following modes of operation: (a) High-impedance gate drive (b) Electro-static discharge (ESD) exposure (c) Electrical over-stressed (EOS) operation More on it here (PDF) Power MOSFET failures in high-side applications can often be attributed to a high-impedance gate drive creating a virtual […]
App note: Power MOSFET Basics: Understanding the Turn-On Process
More to know about MOSFET gate threshold voltages, an application note from Vishay. Link here (PDF) The question of how to turn on a MOSFET might sound trivial, since ease of switching is a major advantage of field-effect transistors. Unlike bipolar junction transistors, these are majority carrier devices. One does not have to worry about […]
App note: Selection of three locations of current sense resistor in buck converter
Sensing current utilizing MOSFET’s Rds(on) and Inductor’s DCR in different location discussed in this app note from Alpha and Omega semiconductor. Link here (PDF) In current mode converters, current sense resistor can be placed in three locations: input loop, output loop and freewheeling loop. The pros and cons are discussed in details. The principles and […]
App note: Paralleling power MOSFETs in switching applications
Application note from Alpha and Omega semiconductor on proper design of circuit and PCB layout to balance parallel MOSFETs. Link here (PDF) This paper discusses issues involved in paralleling MOSFETs in high-power, high-frequency switching applications. It investigates root cause problems such as unbalanced voltage and current by taking a closer examination of PCB layouts and […]
App note: Performance restrictions associated with 3.5 watts SO-8 power MOSFETs
Old app note from Fairchild Semiconductors on SO-8 power MOSFETs’ power handling. Link here In applications requiring high current and small footprint electronic switches, a Power MOSFET packaged in an SO-8 is usually the best choice. This is because the combination offers low on-resistance and reasonable power handling. A second benefit is the numerous suppliers […]
App note: Medium power small-signal MOSFETs in DC-to-DC conversion
App note(PDF) from NXP on DC-DC medium power small-signal MOSFETs. This application note explores different methods of DC-to-DC conversion. It includes some examples of DC-to-DC down-converters using small-signal MOSFETs.
Simple constant current driver for a high power LED
Elmars Ositis has been working on a simple constant current driver: In my previous post, I slapped together a quick LED lighting solution for my workbench… but it is truly a hack. What I really want to do is make a simple constant current driver, so the power LEDs can be used in other projects. One […]
DIY 60W adjustable electrical load
A DIY 60W adjustable electrical load project from Electro-Labs: In this project, we are building a useful board which should take place on your bench. It is an adjustable electrical load which can sink up to 5A @ 60W continuously. This board will come to aid when you need to draw an exact amount of current […]
App note: How P-Channel MOSFETs Can Simplify Your Circuit
An app note from International Rectifier on using P-Channel MOSFETs P-Channel HEXFET Power MOSFETs offer the designer a new option that can simplify circuitry while optimizing performance and parts count. In principle, nothing can be done with a P-Channel MOSFET that cannot be done with an N-Channel plus some extra gate drive circuitry. The main […]
App note: Power MOSFET Basics
App note from International Rectifier on Power MOSFET Basics This application note discusses the breakdown voltage, on-resistance, transconductance, threshold voltage, diode forward voltage, power dissipation, dynamic characteristics, gate charge and dV/dt capability of the power MOSFET.
App note: Avoiding MOSFET driver overstress
An application note from Microchip: Avoiding MOSFET driver overstress (PDF!) This application note describes how to avoid MOSFET driver overstress. MOSFET drivers are used in many applications to drive the high input capacitance of a power MOSFET device. MOSFET drivers are very reliable when used within their operating specifications. Care must be taken, however, to […]
A beginner’s guide to the MOSFET
An introduction to the MOSFET: If you need to switch high current and or high voltage loads with a micro controller you’ll need to use some type of transistor. I’m going to be covering how to use a MOSFET since it’s a better option for high power loads. This guide will be just a brief […]