Some examples of power MOSFETS application from this app note from IXYS Corporation. Link here (PDF) Applications like electronic loads, linear regulators or Class A amplifiers operate in the linear region of the Power MOSFET, which requires high power dissipation capability and extended Forward Bias Safe Operating Area (FBSOA) characteristics. Such mode of operation differs […]
Category Archives: app notes
App note: Depletion-Mode power MOSFETs and applications
IXYS Corporation’s N-Channel power MOSFET selection and application. Link here (PDF) Applications like constant current sources, solid-state relays, telecom switches and high voltage DC lines in power systems require N-channel Depletion-mode power MOSFET that operates as a normally “on” switch when the gate-to-source voltage is zero (VGS=0V). This paper will describe IXYS latest N-Channel Depletion […]
App note: Infrared (IR) Spectroscopy with the SFH 473X – Background & technology
Infrared spectroscopy by OSRAM and their SFH 473X broadband light emitters. Link here (PDF) Imagine you can check if the mangos on the market are sweet – without even touching them… Imagine you can verify if your prescribed medical tablets contain the life-saving compound – or if they are counterfeits… Imagine you can check the […]
App note: Ambient light sensors – General application note
Different ambient sensors differs on their ability to sense specific wavelength and introduce different ambient levels compared to human eye, here’s a general application note from OSRAM. Link here (PDF) This application note introduces discusses ambient light sensing. The different types of ambient light sensors are described and related to specific applications.
App note: USB Type C, CC Pin design considerations, high voltage design considerations for Type-C connector pins in systems supporting non-USB standard charging protocol and/or fault cases
Another app note from Fairchild Semiconductors on USB Type C to USB legacy design considerations. Link here (PDF) When designing hardware systems with type C connectors, a designer also has to consider all legacy, standard, and nonstandard specifications that exist in the USB connector eco system. With the introduction of the Type C connector and […]
App note: USB Type-C design considerations, USB Type-C adapters
Type-C USB cable adapter design consideration app note from Fairchild Semiconductors. Link here (PDF) USB is a ubiquitous connector that is used by many customers and in many different applications. With the official release of the USB Type-C connector, many companies are racing to implement this new connector and the supporting infrastructure. The early adopters […]
App note: HT45F3630 power tool speed control switch application example
All in one motor control MCU HT45F3630 from Holtek. Link here (PDF) Aimed at the motor speed control product application area, HOLTEK has developed the HT45F3630, which is commonly used in electric drills, electric screwdrivers, lawn mowers and other similar product applications. This MCU provides a group of PWM high voltage and large current output […]
App note: How to measure thermal resistance of LED emitters and LED arrays
Another white paper from Lumileds about LED thermal resistance. Link here (PDF) Thermal performance is the most critical factor of a well-designed LED lighting system. A lighting system with proper thermal design has higher efficacy, meaning more light can be extracted using less energy, and better long term reliability.
App note: Flash for “Selfies”
Effective front facing camera flash discussed in this white paper from Lumileds. Link here (PDF) Smartphones are ubiquitous in everybody’s daily lives, a trend that shows no sign of slowing. A key component of the smartphone is the camera, which has gained market share over Digital Still Cameras due to its convenience. As the demand […]
App note: DAC ICs: How many bits is enough?
A very old application notes from Analog Devices that tells about Nyquist Theorem, sampling rate and quantization used on DACs. Link here (PDF) At the heart of every digital audio playback system lies the single-most critical component for high-fidelity audio: the digital-to-analog converter (DAC). These converters handle the delicate task of translating the 16-bit binary […]
App note: Influence of control loop by an output filter
Application note from Würth Elektronik about the effect of filters that are added to the output of switching regulators. Link here The output voltage of switching regulators has a voltage ripple that can disturb with electrical power supplied circuits and lead to electromagnetic disturbances. Thus output filters are often used for noise suppression, which may […]
App note: Ceramic multilayer capacitors in HF SMPS applications
Development and improvement of ceramic multilayer capacitors in high frequency power supply filtering, a technical note from AVX. Link here (PDF) There has been an explosion of interest in the use of ceramic capacitors for high frequency power conversion applications. This interest is compounded with new designs striving for higher frequencies, smaller sizes and greater […]
App note: Output filter caps for mission critical applications
A great guide from AVX on output capacitor types and their specific uses based on ESR, ESL and temperature properties. Link here (PDF) This document discusses the effect of capacitors on output power quality. It evaluates and provides a comparison of different capacitor technologies, their high reliability qualification availability from COTS+ to space level, and […]
App note: Application of leaded resistors in energy meters
App note from Vishay about energy meter circuits and the use of leaded resistors on them. Link here (PDF) An electric meter or energy meter is a device that measures the amount of electrical energy supplied to a residence or business. It is also known as (k)Wh meter. The main unit of measurement in the […]
App note: Overcurrent protection with Thin Film resistors technology
A technical note about Thin Film fuses from Vishay. Link here (PDF) Thin film technology is an established technology for high-grade passive components, which has been proved and refined over decades. Its advantages in terms of accuracy, repeatability and stability are appreciated in mass production for billions of thin film resistors every year. Chip fuses […]
App note: Interfacing to analog switches: Driving the control input of an analog switch with 1.8 V or lower − Is it safe?
ON Semiconductor’s analog switches let you drive with an input control voltage lower than Vcc. Link here (PDF) Analog switches are everywhere today. Due to their small size and low current consumption, they are popular in portable devices where they are effective in a variety of subsystems including audio and data communications, port connections, and […]
App note: Consideration of self-pollution reduction for electronic systems
App note from ON Semiconductors discussing how locally generated EMI affects its own system and how to prevent it. Link here (PDF) This application note will address the problem of Electro Magnetic Interference (EMI) self pollution in which one part of an electrical systems such as cell phones and consumer electrical products emit radiation that […]
App note: Active capacitor discharge circuit considerations for FPGAs
Power down sequencing and discharging on FPGAs app note from Diodes Incorporated. Link here (PDF) FPGA’s need the different power rails to be powered up and down in a defined sequence. For power down, each sequenced rail needs to be fully off before the next rail is turned off. With large high speed and high […]
App note: Power supply rejection for low-jitter clocks
Method of rejecting noises from power supply, an app note from Silicon Labs. Link here (PDF) Hardware designers are routinely challenged to increase functional density while shrinking the overall PCB footprint of each new design. One significant challenge is minimizing clock jitter through careful board design while meeting the design’s functional and space requirements. Since […]
App note: Nonvolatile STANDBY/ON Switch
Power status recovery in this application note from Maxim Integrated. Link here (PDF) Using an electronically programmable voltage reference (DS4305) as a single-bit nonvolatile memory cell, this circuit remembers the state of a STANDBY/ON switch that changes state with no operator present.