Aimtec’s app note on inrush current on power converters and their solution. Link here Inrush currents can be problematic in circuits that utilize overload protection devices such as fuses and circuit breakers. The selection of overcurrent protection devices is made more complicated when high inrush currents are present. False overload conditions can trigger unwanted protection […]
Tag Archives: app note
App note: Forced air convection and heat sinking for power supplies
Application note from Aimtec discusses about two ways for taking away heat on power supplies. Link here When evaluating the operating temperature ranges of power supplies one must consult component’s datasheets. Datasheets state a “usable” operating temperature range typically given at full output load. In order to reach the upper limit of the temperature ranges […]
App note: Method to reduce the output ripple & noise of power supplies
Another app note from Aimtec on power supplies and how to minimize their output noises. Link here The switching power supplies have the fundamental advantage of high efficiency i.e. low power dissipation when compared to linear voltage regulation. However, there exists an important consideration concerning the presence of ripple and noise at their outputs. If […]
App note: The optimum method to test the output ripple & noise of power supplies
Application note from Aimtec about testing power supplies, Link here The switching power supplies have the fundamental advantage of high efficiency i.e. low power dissipation when compared to linear voltage regulation.
App note: Best design and layout practices for SiTime oscillators
SiTime’s app note about how to properly route an oscillator’s PCB traces. Link here Proper decoupling, bypassing, and power supply noise reduction is important in many applications to ensure optimal performance for oscillators. A common strategy is to place capacitors near high speed devices on a printed circuit board (PCB). These capacitors serve important functions: […]
App note: Frequency measurement guidelines for oscillators
Application note from SiTime about frequency measurements and how some methods may not gauged accurately. Link here Every digital electronic device requires a reference clock and oscillators are widely used to serve that purpose. Verifying frequency characteristics of high performance devices requires accurate frequency measurement. This document contains an overview of various frequency measurement methods […]
App note: Alkaline battery low-voltage indicator
Battery low-voltage indicator made from two new comparators TSM9118 and TMS9119 from Silicon Labs. Link here (PDF) In many battery-powered systems, a user would like to know when it is time to replace the batteries before they are completely discharged, causing the device being powered to fail completely. Alkaline batteries have an open cell voltage […]
App note: A practical look at current ratings
An app note from Alpha & Omega Semiconductors about proper way of evaluating MOSFET’s power handling capability based on how much loss it will generate based on the application conditions. Link here (PDF) System designers are often faced with the task of selecting the most suitable power device from a wide array of products from […]
App note: Performance capability of the SO8-FL package
MOSFET SO8-FL package app note from ON Semiconductors provide same thermal performance as metal top package with heat sink attached. Link here (PDF) The SO8−FL package can deliver high power density and provides excellent thermal dissipation to create a high efficiency, cool design environment when properly cooled. Metal−top devices attempt to remove heat easier through […]
App note: PCB design guidelines that maximize the performance of TVS diodes
Correct TVS diodes location on the PCB provides optimal protection from surge, an application note from ON Semiconductors. Link here (PDF) Transient Voltage Suppressors (TVS) avalanche diodes and diode arrays can be used to protect sensitive electronic components from the surge pulses that arise from ESD and EMI. The small size, fast response time, low […]
App note: Press-Fit technology
PCB Power connection solution from Würth Elektronik, Link here As a solder free fastening technology, press-fit technology frequently offers an attractive alternative to simple soldering technology. An effective electrical press-fit connection is created by pressing a pin into the plated through hole of a circuit board and – as part of cold welding process – […]
App note: Going wireless with magnetic shielding
Efficient magnetic shielding application note from Würth Elektronik, Link here (PDF) Magnetic Field Interferences are increasing in electronic devices due to a number of factors including reduced separation distances of PCB’s, Integrated Circuits and many other sensitive components. In addition to this the extended use of magnetically coupled communication technologies (Qi-WPC, NFC, RFID, PMA, A4WP, […]
App note: Anti-tampering solution for E-Meter application
App note from Infineon Technologies on 3D sensor used as anti-tampering devices on E-Meters, Link here (PDF) This application note describes a possible realization of an anti-tampering solution in an Electricity Meter. With the new product family of the 3D Magnetic Sensor (TLV493D), Infineon offers an innovative solution for three-dimensional magnetic position sensing. By allowing […]
App note: Using a magnetic 3D sensor in a gear stick application
6 hall effect sensors effectively replaced by one 3D sensor, an application from Infineon Technologies. Link here (PDF) A magnetic 3D sensor is well suitable for a detection of the position of the gear stick. The „State-of-the-art“ solution with up to 6 single hall switches can be replaced by one 3D sensor. The TLE493D-W1B6 has […]
App note: CCD Fundamentals
ON Semiconductor’s Charge-Coupled Devices primer application note. Link here (PDF) Like many technologies, the Charge-Coupled Device (CCD) started out as one kind of creature and wound up as something completely different. Invented in the late 1960’s by researchers at Bell Labs, it was initially conceived as a new type of computer memory circuit, and it […]
App note: Understanding data eye diagram methodology for analyzing high speed digital signals
Application note from ON Semiconductors about the Data eye diagram methodology to represent and analyze a high speed digital signal. Link here (PDF) The eye diagram allows key parameters of the electrical quality of the signal to be quickly visualized and determined. The data eye diagram is constructed from a digital waveform by folding the […]
App note: HVArc Guard® surface-mount capacitors for low-power voltage multiplier applications
Application note on Vishay’s arc resistant SMD capacitors, Link here (PDF) Voltage multipliers can generate very high voltages due to an inverter circuit that feeds a step-up transformer, which is connected to the multiplier circuit. An example of a typical voltage multiplier, which is simply a circuit comprised of capacitors and diodes that charge and […]
App note: AC film capacitors in connection with the mains
An application note from Vishay about choosing the right filter capacitors that are placed directly on mains. Link here (PDF) To help reducing emission and increasing the immunity of radio interference, electromagnetic interference suppression film capacitors (EMI capacitors) are playing a major role in all kind of applications. These capacitors are put directly parallel over […]
App note: The 2-Channel serial audio interface: A tutorial
A pretty older application note about the serial audio interface by Cirrus Logic. Link here (PDF) It may come as a surprise to those trying to make their initial investigation into audio systems design that there is a de-facto standard for transferring audio data within a system. Despite the differing naming conventions used within the […]
App note: The LM4935 headset and push-button detection guide
Another headset plug-in detection from Texas Instruments. Link here (PDF) The headset detect circuitry can differentiate between mono, stereo, mono with microphone, and stereo with microphone headsets. It can operate while the LM4935 is placed into low current standby mode, which promotes extended battery life. In standby mode, it consumes no extra current, if the […]