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Posts Tagged ‘app note’

App note: Flow sensing in tankless water heaters

Sunday, July 24th, 2016

Contactless reed switches from Littelfuse provides flow and water presence monitoring. Link here (PDF) Reed switches and sensors are highly effective solutions for flow sensing applications that can be used for detecting the presence of fluid flow in a system or even measure the rate of fluid flow. Tankless water...

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App note: Circuit protection technology application matrix application guide

Sunday, July 24th, 2016

Here's an application matrix of Littelfuse's circuit protections, Link here (PDF)

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App note: Parallel configuration of H-bridges featuring the MC33932 and MC34932 ICs

Sunday, July 17th, 2016

Old application note from ON Semiconductors on getting increased power capability by paralleling H-bridges and overcoming current limit imbalance between the two drivers by properly designing the board layout. Link here (PDF) Two or more H-bridges can be operated in parallel to increase the current handling capacity of the circuit....

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App note: Duty cycle and power optimization

Sunday, July 17th, 2016

Power saving specially on battery operated devices need to be kept, in this application note from ON Semiconductors discussed how to keep duty cycle in which a wireless RF device is operated at a minimum time. Link here (PDF) Consider a battery powered device (target), which should receive data from...

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App note: Rectifiers for Power Factor Correction

Sunday, July 10th, 2016

Another Vishay's app note about power factor correction this time about the component used and their effects. Link here (PDF) PFC devices are generally selected base on the speed of their reverse recovery time (trr). Currently for CCM (Continuous-Conduction-Mode) and CRM (Critical Conduction-Mode) PFC devices in market, rectifiers up to...

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App note: Power factor correction with ultrafast diodes

Sunday, July 10th, 2016

Vishay's app note in keeping the power supplies' power factor in check with their ultrafast diodes. Link here (PDF) More and more switched mode power supplies (SMPS) are being designed with an active power factor correction (PFC) input stage. This is mainly due to the introduction of regulations aimed at...

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App note: Limiting inrush current

Sunday, July 3rd, 2016

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...

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App note: Forced air convection and heat sinking for power supplies

Sunday, July 3rd, 2016

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...

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App note: Method to reduce the output ripple & noise of power supplies

Sunday, June 26th, 2016

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...

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App note: The optimum method to test the output ripple & noise of power supplies

Sunday, June 26th, 2016

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.

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App note: Best design and layout practices for SiTime oscillators

Sunday, June 19th, 2016

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)....

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App note: Frequency measurement guidelines for oscillators

Sunday, June 19th, 2016

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...

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App note: Alkaline battery low-voltage indicator

Sunday, June 12th, 2016

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...

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App note: A practical look at current ratings

Sunday, June 12th, 2016

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...

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App note: Performance capability of the SO8-FL package

Sunday, June 5th, 2016

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...

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App note: PCB design guidelines that maximize the performance of TVS diodes

Sunday, June 5th, 2016

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...

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App note: Press-Fit technology

Sunday, May 29th, 2016

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...

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App note: Going wireless with magnetic shielding

Sunday, May 29th, 2016

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...

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App note: Anti-tampering solution for E-Meter application

Sunday, May 22nd, 2016

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...

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App note: Using a magnetic 3D sensor in a gear stick application

Sunday, May 22nd, 2016

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...

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