Nexperia’s app note on their load switches, combining multiple load switch functions in to one chip. Link here (PDF) Nexperia load switch ICs are highly integrated Power Management Integrated Circuits (PMICs) designed to efficiently control power rails within electronic systems. Load switches serve as indispensable components for managing power distribution and enabling the smooth operation […]
Tag Archives: nexperia
App note: Multiphase machines in automotive applications
Nexperia’s app note for multiphase machines. Link here (PDF) This application note describes the advantages of multiphase machines and prompts the reader to their recent, widely expanded usage. A short description of the power MOSFET switch design in is given, relying heavily on the more descriptive design. A short description of the control method for […]
App note: Bidirectional multi-voltage level translator applications using Nexperia’s LSF010x auto-sense devices
App note from Nexperia that presents their LSF010x voltage level translator which uses parallel channels of pass transistors. Link here (PDF) System level designers are confronted with increasing complexity of modern electronic systems in which lower power and logic voltage levels are used. This may lead to incompatibility between input and output levels if different […]
App note: Paralleling power MOSFETs in high power applications
App note from Nexperia on how MOSFETs’ imperfection can cause imbalance current when paralleled, and how these problems are solved. Link here (PDF) In today’s automotive and power industries, higher power requirements are leading to more designs that require lower RDSon. Sometimes this is not achievable with a single packaged MOSFET and the design will […]
App note: Understanding the MOSFET peak drain current rating
App note from Nexperia on an explanation of the derivation of the maximum drain current as a function of pulse duration rating. Link here (PDF) Historically the IDM capability is shown in the limiting values section of the data sheet for tp ≤ 10 µs. ID at DC (continuous) is also shown. IDM is traditionally […]
App note: Low temperature soldering
A study and actual test using LTS (Low Temperature Soldering) on SMT devices from Nexperia. Link here (PDF) New generation Low Temperature Solder (LTS) pastes for Surface Mount Technology (SMT) is proposed for low temperature applications such as computing. LTS pastes are commonly build on near-eutectic SnBi alloying system and therefore show reduced melting temperatures […]
App note: Resistor Equipped Transistors (RETs)
Introduction and application of resistor equipped transistors from Nexperia. Link here (PDF) Bipolar transistors are controlled via the base current applied. Because of high temperature dependency of the voltage drop across the base-emitter path, it is required to add at least a series resistors at the base for stable and safe operation of a transistor […]
App note: Protecting charger interfaces and typical battery charging topologies
Nexperia’s app note presenting ideas to protect USB port on devices. Link here (PDF) This application note describes a complete solution for battery charging in mobile devices. This includes how to charge a Li-Ion battery with typical battery charger topologies, particularly with external bypass transistors and ways to effectively protect against overvoltage and overcurrent from […]
App note: Discrete LED driver
Simple discrete LED driver application from Nexperia. Link here (PDF) This application note describes a 300 mA discrete LED driver, based on a buck-converter principle, with a cycle-by-cycle current control. It includes a proposal for a BOM and layout of a low cost, low component count solution. Key applications for the driver are lighting applications, […]
App note: Power MOSFETs in linear mode
App note from Nexperia about MOSFET characteristics in linear mode within their SOA. Link here (PDF) Power MOSFETs are extensively used as switches due to the very low RDSon and thus low conduction losses. However, in many applications MOSFETs are used in their saturated state, with certain cases requiring both these modes to be robust […]
App note: Load switches for mobile and computing applications
App note from Nexperia presenting simple load switches in mobile and computing applications. Link here (PDF) There are several reasons why a circuit or subsystem is required to be disconnected from the power supply using a load switch. A very simple and very common reason is that it helps saving power. An unpowered subsystem can […]
App note: Driving solenoids in automotive applications
App note from Nexperia about various solenoid driver used in automotive. Link here (PDF) There are a wide variety of solenoid drive circuit topologies. Most of them use MOSFETs in various configurations and driving modes. In this application note four of them will be discussed: solenoid driver with free-wheeling diode, solenoid driver with MOSFET avalanching, […]
App note: Designing RC snubbers
RLC snubber circuits, app note from Nexperia. Link here (PDF) This document describes the design of a simple “RC snubber circuit”. The snubber is used to suppress high-frequency oscillations associated with reverse recovery effects in power semiconductor applications
App note: Addressing floating inputs in digital systems (Bus Hold)
White paper from Nexperia about their bus hold tech. Link here (PDF) In the normal operations of a digital system, the input to any digital device within is clearly defined – it is either one or zero. There are however interface cases where outputs may be disabled that can result in floating inputs.
App note: Failure signature of electrical overstress on power MOSFETs
Nexperia app note about MOSFET’s destruction investigative hints that can be used for design improvements. Link here (PDF) When Power MOSFETs fail, there is often extensive damage. Examination of the size and location of the burn mark, the failure signature, provides information about the type of fault condition which caused the failure. This document provides […]
App note: Designing in MOSFETs for safe and reliable gate-drive operation
This app note from Nexperia discuss’ gate drive designs for safe operation of MOSFET. link here (PDF) The MOSFET gate-source threshold voltage (VGS-th) and maximum gate-source voltage (VGS-max) are key parameters that are critical to the reliable operation of MOSFETs. The threshold voltage represents the voltage at which the MOSFET starts to turn on, whilst […]