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Posts Tagged ‘app note’

App note: Gate-source voltage behaviour in a bridge configuration

Sunday, June 16th, 2019

App note from ROHM semiconductor on MOSFETS and IGBTs. Link here (PDF) Power switching devices such as MOSFETs and IGBTs are used for various kinds of power supply applications, power supply line switching components, and other power applications. In addition, the circuit topologies used are diverse, parallel and series connections...

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App note: Board level application notes for DFN and QFN packages

Sunday, June 16th, 2019

Board mounting an DFN/QFN (Dual/Quad Flat-Pack No lead) application note from ON Semiconductor. Link here (PDF) The DFN/QFN platform offers a versatility which allows either a single or multiple semiconductor devices to be connected together within a leadless package. These guidelines include printed circuit board mounting pads, solder mask and...

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App note: Why honest weigh scales are application specific

Sunday, June 9th, 2019

App note from Maxim Integrated discussing strain gauge and accompanying circuit are used in today's weight measurement applications. Link here (PDF) Current laws and regulations require honesty, tolerance, and accuracy in weigh scales. The most commonly used weight-measurement element is the strain gauge. This application note explains how strain gauges...

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App note: How to shrink your USB Type-C battery charger

Sunday, June 9th, 2019

Maxim's app note on a highly compact Type-C charger solution. Link here (PDF) A highly integrated solution, as seen with the MAX77860 USB Type-C 3A switch-mode charger, dramatically reduces system complexity by integrating the charger, the power path, the Safeout LDO, ADC, and the USB-C CC and BC 1.2 detection...

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App note: Magnetometer placement in mobile devices

Sunday, June 2nd, 2019

App note from Kionix about magnetometer integration challenges from the mobile equipment point of view, and gives guidelines for the mounting position of the magnetic sensor. Link here (PDF) Electronic devices contain many parts which can affect a magnetic sensor. When deciding the mounting position, it is necessary to consider...

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App note: Using two tri-axis accelerometers for rotational measurements

Sunday, June 2nd, 2019

App note from Kionix on utilizing 2 linear accelerometers to determine angular rotational rates. Link here (PDF) In many applications, customers would like to measure rotational motions (angular velocity, angular acceleration) in addition to linear motions. Most often, gyroscopes are added to their end product to obtain the rotational information....

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App note: Light quality – White light parameters

Sunday, May 26th, 2019

App note from OSRAM on consistency of colors specifically white lights. Link here (PDF) White light is not the same as white light. When different light sources are used, color differences may become visible. To understand why this can happen, it is necessary to understand how people perceive color and...

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App note: Ambient lighting design utilizing RGB LEDs

Sunday, May 26th, 2019

App note from OSRAM on using RGB LEDs or their MULTILED® for automotive interior lighting. Link here (PDF) This application note describes the advantages and challenges of utilizing RGB LEDs for ambient lighting control. Besides pointing out practical challenges, preferred solutions for RGB LEDs are outlined and discussed to assist...

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App note: Color sensing improves look and feel of smart products

Sunday, May 19th, 2019

Renesas' white paper on applications of RGB sensors. Link here (PDF) Color printers also require an accurate sensor to ensure that during calibration and printing the correct amount of ink is being deposited onto the paper—an essential requirement when the target output is for color photographs.

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App note: Eye safety for proximity sensing using infrared light-emitting diodes

Sunday, May 19th, 2019

A guide to human eye safety for designers of consumer products, app note from Renesas. Link here (PDF) Active Proximity Sensing for Consumer products requires the use of a light-emitting component to illuminate the target object to be detected at some distance from the sensor. Typically, product designers do not...

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App note: Basics on decoupling

Sunday, May 12th, 2019

See AVX technical note on how capacitors filter out transients in high speed digital circuits. Link here (PDF) This paper discusses the characteristics of multilayer ceramic capacitors in decoupling applications and compares their performance with other types of decoupling capacitors. A special high-frequency test circuit is described and the results...

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App note: Hand soldering tutorial for fine pitch QFP devices

Sunday, May 12th, 2019

No SMD tools removal and soldering of QFP packages tutorial from Silicon labs. Link here (PDF) This document is intended to help designers create their initial prototype systems using Silicon Lab's TQFP and LQFP devices where surface mount assembly equipment is not readily available. This application note assumes that the...

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App note: 3V DACs used in ±10V applications

Sunday, May 5th, 2019

Boosting DAC's output to drive larger voltage tackled in this app note from MAXIM Integrated. Link here (PDF) Many modern systems have the majority of their electronics powered by 3.3V or lower, but must drive external loads with ±10V, a range that is still very common in industrial applications. There...

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App note: Tire pressure monitor system

Sunday, May 5th, 2019

NXP Semiconductor's implementation of Tire pressure monitor (TPM) system. Link here (PDF) The Tire Pressure Monitoring System Reference Design consists of five modules: four tire modules and a receiver module. The tire modules consist of the MPXY80xx, the RF2, a battery, several discrete components, and a printed antenna. The receiver...

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App note: Crystal oscillator troubleshooting guide

Sunday, April 28th, 2019

App note from NXP Semiconductors dealing with oscillators in microcontrollers. Link here (PDF) Most microcontrollers can use a crystal oscillator as their clock source. Other options include external canned oscillators, resonators, RC oscillators, and internal clocks. The main advantages of a crystal oscillator are frequency accuracy, stability, and low power...

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App note: Active cell balancing in battery packs

Sunday, April 28th, 2019

Cell balancing implementation from NXP Semiconductors. Link here (PDF) Batteries made of multiple cells connected in series are often used as a power source for common electronic devices. In multicell battery chains, small differences between the cells (due to production tolerances or operating conditions) tend to be magnified with each...

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App note: Reduced power dissipation of relay loads

Sunday, April 21st, 2019

Another app note from ON Semiconductors on using PWM technique to reduce power consumed when latching mechanical relays. Link here (PDF) Integrated circuit driver circuits often use relay loads in their application. Output drivers are a source of power dissipation on the IC. Latching relays can be used to keep...

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App note: The load switch – Selection and use of ecoSWITCH(TM) products

Sunday, April 21st, 2019

ecoSWITCH(TM) from ON Semiconductors offers space saving solution on power distribution system. Link here (PDF) Load switches play an important part in the management of supply domains and the protection of the loads they supply. Loads switches are often used for power sequencing, standby load leakage reduction, and inrush current...

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App note: The behavior of electro-magnetic radiation of power inductors in power management

Sunday, April 14th, 2019

Würth Elektronik app note on EM radiation emission from power inductors. Link here (PDF) DC-DC converters are widely used in power management applications and the inductor is one of the key components. The usual focus is on electrical performance characteristics such as RDC, RAC and core losses. But, the electro-magnetic...

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App note: How to use power inductors

Sunday, April 14th, 2019

A great guide from TDK about power inductors used in DC-DC converters. Link here As electronic devices become more advanced, the power supply voltage of LSIs used in them is lowered, so their power consumption can be reduced and their speed increased. However, a decrease in the power supply voltage...

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Recent Comments

  • Joe Desbonnet: Ya, I can recommend the low melting point solder. I used brand 'ChipQuik' and it's amazingly easy to use.
  • Jerome: I need a new BusPirate for the Fablab ;) Many thanks!
  • Max: Seems like an unexpectedly violent way to remove the chip indeed. A hot air station should of course do the job just fine, but in...
  • jose: Part removal described here is pure butchery, the cheapest hot air station will do a fast and clean job removing the QFP, heat air to...
  • Cody: Yes please