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Archive for the ‘app notes’ Category

App note: Recommendations to avoid short pulse width issues in HVIC gate driver applications

Sunday, September 16th, 2018

Application note from ON Semiconductors discussing possible abnormalities on High voltage gate driver when operating on short pulses. Link here (PDF) The High−Voltage Integrated Circuit (HVIC) gate driver family is designed to drive an N−channel MOSFET or IGBT up to 600 V. One of the most common methods to supply...

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App note: High voltage inverting buck reduces complexity and board space

Sunday, September 16th, 2018

App note from ON semiconductors about repurposing a buck converter to produce negative voltages. Link here (PDF) Applications in the electronics industry ranging from sensor−based designs to power amplifiers are periodically faced with the requirement to generate a negative voltage rail. Although many transformer−based designs, charge pumps and other methods...

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App note: The reduction of input voltage spike on power switches

Sunday, September 9th, 2018

Another app note from Richtek introducing solutions for reducing the input voltage spike on power switches. Link here The power switch is a low voltage, single N-Channel MOSFET high-side power switch, optimized for self-powered and bus- powered Universal Serial Bus (USB) applications. In worse operating condition, an input voltage spike...

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App note: Analyzing VIN overstress in power ICs

Sunday, September 9th, 2018

Investigative app note from Richtek about the component failure point caused by EOS. Link here (PDF) Failures in power ICs are often the result of Electrical Over Stress (EOS) on the IC input supply pin. This report explains the structure of power IC input ESD protection and how ESD cells...

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App note: DC/DC converter testing with fast load transient

Sunday, September 2nd, 2018

Another app note from Richtek, this time about transient load testing on power converters and how you can make a simple and low cost fast transient tool. Link here (PDF) Load transient testing is a quick way to check power converter behavior on several aspects: It will show the converter...

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App note: RT2875 3A automotive buck converter

Sunday, September 2nd, 2018

An application note from Richtek on buck converter used in automotive application. Link here (PDF) Automotive environment can be quite harsh and designing electronics that need to work reliable in this environment takes special care, and often requires automotive qualified parts. When designing voltage regulators that need to step down...

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App note: Designing applications with Lithium-Ion batteries

Sunday, August 26th, 2018

More Li-ion battery applications from Richtek. Link here (PDF) Lithium-Ion batteries have several advantages when compared with other battery types: They are light weight, and energy density of lithium-ion is typically twice that of the standard nickel-cadmium. Li-Ion batteries have no memory effect, and the self-discharge is 6 ~ 8...

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App note: Switching battery chargers

Sunday, August 26th, 2018

App note from Richtek about several aspects of switching chargers for single cell Li-Ion batteries. Link here (PDF) Longer battery life and shorter charging times are some of the challenges in battery management in modern hand-held applications like Smart-Phones, Tablet PCs, POS and other portable equipment. Devices with powerful processors...

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App note: AC ripple current calculations solid tantalum capacitors

Sunday, August 19th, 2018

Application note from Vishay on power and voltage limitations of solid tantalum capacitors for both low and high frequency applications. Link here (PDF) Solid tantalum capacitors are preferred for filtering applications in small power supplies and DC/DC converters in a broad range of military, industrial and commercial systems including computers,...

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App note: Electrolytic capacitor lifetime estimation

Sunday, August 19th, 2018

Lifetime estimation methods for elcap app note from Jianghai. Link here (PDF) Aluminum Electrolytic Capacitors ("alu-elcaps", "elcaps") are essential for the function of many electronic devices. Ever increasing for enhanced efficiency, the expanding utilization of renewable energy and the continuous growth of electronic content in automotive applications have driven the...

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App note: Replacing mechanical potentiometers with digital potentiometers

Sunday, August 12th, 2018

Another application note from Analog Devices this time about the superiority of digital over mechanical potentionmenters. Link here (PDF) Potentiometers have been widely used since the early days of electronic circuits, providing a simple way to calibrate a system, adjusting offset voltage or gain in an amplifier, tuning filters, controlling...

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App note: Precision signal conditioning for high resolution industrial applications

Sunday, August 12th, 2018

App note from Analog Devices on robust precision signal conditioning. Link here (PDF) Industrial measurement and control systems often need to interface to sensors while operating in noisy environments. Because sensors typically generate very small electrical signals, extracting their output from the noise can be challenging. Applying signal conditioning techniques,...

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App note: Modern thermocouples and a high-resolution DeltaSigma ADC enable high-precision temperature measurement

Sunday, August 5th, 2018

Old app note from Maxim Integrated about high-precision temperature measurement. Link here (PDF) Many industrial and medical applications require temperature measurements with accuracies of ±1°C or better, performed with reasonable cost over a wide range of temperatures (-270°C to +1750°C), and often with low power consumption. Properly selected, standardized, modern...

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App note: Sterilization methods and their impact on medical devices containing electronics

Sunday, August 5th, 2018

App note from Maxim Integrated on electronic devices sterilization. Link here (PDF) Although there is considerable literature about sterilization methods and equipment, there is very little written about the impact of sterilization on electronics. This article compares popular sterilization methods and discusses their suitability for objects containing electronics.

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App note: High-side smart-FETs with analog current sense

Sunday, July 29th, 2018

Smart-FETs application from ON Semiconductors. Link here (PDF) This application note describes the structure and design philosophy of ON Semiconductor High Side Smart−FETs, and serves as a guide to understand the operation of the device in specific applications. The scope of this document is limited to Smart−FETs with analog current...

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App note: Current Sense Amplifiers, FAQs

Sunday, July 29th, 2018

FAQs answered by ON Semiconductor's application support team on the topic of current sense amplifiers. Link here (PDF)

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App note: Introduction to the silicon photomultiplier (SiPM)

Sunday, July 22nd, 2018

App note from ON Semiconductors about SiPM sensors, explaining the working principle and primary performance parameters. Link here (PDF) The Silicon Photomultiplier (SiPM) is a sensor that addresses the challenge of sensing, timing and quantifying low-light signals down to the single-photon level. Traditionally the province of the Photomultiplier Tube (PMT),...

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App note: USB audio bridge example with STM32F0 MCUs

Sunday, July 22nd, 2018

App note from STMicroelectronics using their STM32F0 microcontrollers to playback audio stream from USB. Link here (PDF) This application note describes a method and an example of synchronizing audio playback or audio recording with an upstream or downstream USB audio host, ensuring flawless audio listening or recording using only internal...

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App note: USB Type-C protection and filtering

Sunday, July 15th, 2018

STMicroelectronics' solution for simplifying USB Type-C protection and filtering using transient voltage suppressors, common mode filtering and proper board layout. Link here (PDF) The USB interface has been present on the market for nearly 2 decades and thanks to that, nowadays it is quite obvious for everybody to connect electronic...

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App note: How to select the right thyristor (SCR) for your application

Sunday, July 15th, 2018

SCR fundamentals discussed in this app note from STMicroelectronics. Link here (PDF) This document provides some guidelines about how to select the right thyristor, also referred to as "SCR", according to the different applications. Some very specific cases could require a higher level of expertise to ensure reliable and efficient...

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