App note: Automotive reverse battery protection diode

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Super Barrier Rectifier™ (SBR) from Diodes Incorporated offers good power efficiency compared to normal PN junction diode and design simplicity compared to MOSFETs reverse protection. Link here (PDF)

This application note compares the performance of Diodes Inc. Super Barrier Rectifier™ (SBR) as an automotive reverse battery protection diode with other solutions. An overview of the reverse battery protection requirement and the qualification standards are also presented.

App note: A closer look at LVDS technology

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A general overview of Low Voltage Differential Signaling (LVDS) from Diodes incorporated. Link here (PDF)

With the increase in demand for high throughputs, current technologies are becoming less efficient. Data transmission devices like RS-422, RS-485, SCSI and other devices are limited in data rate and power dissipation. With LVDS, data rate has increased tremendously to meet the demand in the high bandwidth market and yet still consumes less power than many current devices. LVDS offers low-power. low-noise coupling, low EMI emissions, and switching capability beyond many current standards. LVDS applications can be used anywhere where high data rate is required and needed to be transfer over a distance. LVDS technology can be found in printers, flat panels, switches, routers, audio/video digital signal processing and many more other applications.

App note: iCoupler® Isolation in CAN bus applications

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Application note from Analog Devices on CAN bus system isolation. Link here (PDF)

The intention of this application note is to give the user a brief overview of the CAN bus protocol, focusing on the system physical layer, as well as an understanding of why isolation is so important to the system. This application note also details how to implement isolation in a CAN bus system using Analog Devices’ iCoupler products.

App note: Safety considerations and layout recommendations for digital isolators

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Application note from Silicon Labs about end user safety against high voltage shock that are designed together with digital isolators. Link here (PDF)

This application note details the creepage and clearance requirements of an isolator type component, such as a digital isolator, used to provide protection from electric shock. It also details layout recommendations to enhance a design’s robustness and ensure compliance with end safety standards.

App note: Understanding undervoltage lockout in display power devices

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Texas Instrument’s application note about how undervoltage lockout (UVLO) protect devices from undefined behavior. Link here (PDF)

Many integrated circuits include an undervoltage lockout (UVLO) function to disable the device at low supply voltages. Below the minimum supply voltage the function and performance of a device may be undefined, making it impossible to predict system behavior. This application note explains how to correctly understand the undervoltage lockout specification in the data sheets of TI’s Display Power products.

App note: Driving of OLEDs

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Application note from OSRAM on driving OLEDs with constant current for longer operation. Link here

The operation of OLEDs with electronic drivers is similar to anorganic LEDs for the most part. In a majority of applications, standard LED drivers may be used also for OLEDs. Nevertheless, there are some important basic rules and OLED specific characteristics, that have to be considered.

App note: Current sensing power MOSFETs

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SENSEFET App note from ON Semiconductors incorporate a current sense inside a power MOSFET, these devices are straight forward calculating for sense resistance and voltage but have trade-offs for smaller current sensing. Link here (PDF)

Current sensing power MOSFETs provide a highly effective way of measuring load current in power conditioning circuits. Conceptually simple in nature, these devices split load current into power and sense components, and thereby allow signal level resistors to be used for sampling. Since this technique results in higher efficiency and lower costs than competing alternatives, understanding how to use SENSEFET product is an important design issue.

Getting accustomed to these devices is relatively, but not completely, straightforward. They are conceptually simple, but have their own unique set of characteristics and subtle properties. The following discussion examines both, and starts with a description of how SENSEFET devices work.

App note: Load switches: What are they, why do you need them and how do you choose the right one?

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Application report from Texas Instruments on load switches to simplify power supply design. Link here (PDF)

Integrated load switches are electronic relays that can be used to turn on and turn off power supply rails in systems. Load switches offer many other benefits to the system and can include protection features that are often difficult to implement with discrete components. There are many different applications where load switches can be used including, but not limited to:

-Power Distribution
-Power Sequencing and Power State Transition
-Reduced Leakage Current in Standby Mode
-Inrush Current Control
-Controlled Power down

This application note will provide the fundamental basics of what load switches are, when they should be used, and how they can be implemented in a system.

App note: How to select the Triac, ACS, or ACST that fits your application

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Choosing the right AC switch for your application based on specification like current rating, voltage rating and triggering quadrant. Here’s an app note from STMicroelectronics to guide you on selecting the right part. Link here (PDF)

This document gives basic guidelines to select the AC switch device according to the targeted application requirements. These guidelines will allow the appropriate Triac, ACS or ACST to be selected, for most of the applications. Some very specific cases could require a higher level of expertise to ensure a reliable and efficient operation.