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Posts Tagged ‘STMicroelectronics’

App note: Basics and low-cost solution proposals to move from legacy USB2.0 connector to USB Type-C™ connector with STM32 devices

Sunday, December 23rd, 2018

App note from STMicroelectronics about interfacing STM32 legacy USB 2.0 to USB Type-C. Link here (PDF) This application note is a guideline to introduce this USB Type-C connector onto platform to replace legacy USB2.0 connectors. It introduces some basis of the two new standards USB Type-C™ and the USB Power...

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App note: Quad-SPI (QSPI) interface on STM32 microcontrollers

Sunday, December 23rd, 2018

Extend memories by using external high speed memories interfaced to Quad-SPI modules on STM32 micros, app note from STMicroelectronics. Link here (PDF) This application note describes the Quad-SPI interface on the STM32 microcontrollers and explains how to use the module to configure, program, and read external Quad-SPI memories. It describes...

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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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App note: How to implement an SCR or a Triac in hybrid relay applications

Sunday, May 6th, 2018

Another app note from STMicroelectronics on SCR or Triac hybrid with mechanical relay to decrease power loss and manage inrush current. Link here (PDF) This document gives some key information about the design of the solid-state silicon AC switch stage of a hybrid relay, which can drive resistive, capacitive or...

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App note: AC switches – Is a positive power supply mandatory for my application, or could a negative output work also?

Sunday, May 6th, 2018

App note from STMicroelectronics about the usage of a negative supply in controlling AC switches and their benefits, Link here (PDF) In this application note we explain the reasons why some appliance designers might choose a positive power supply. This selection is based mainly on the choice of switched mode...

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App note: Current sharing in parallel diodes

Sunday, March 4th, 2018

Application note from STMicroelectronics on the performance of each diode in a parallel diode connection and how the forward voltage dispersion can have a great impact over thermal effect on the current imbalance. Link here (PDF) The use of diodes in parallel is commonly found in power electronic design. An...

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App note: Current sensing in metering applications using a pulse current sensor and ST metering devices

Sunday, December 3rd, 2017

App note from STMicroelectronics about current sensing using Rogowski coil together with STPMxx metering device. Link here (PDF) This application note describes the benefits of a current sensing system for metering applications using STPMxx metering devices and a current sensor developed by Pulse Engineering Inc. (hereafter referred to as “Pulse...

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App note: Watt-hour meter based on the STM32F101 microcontroller

Sunday, December 3rd, 2017

ARM Microcontroller based watt-hour meter implementation from STMicroelectronics. Link here (PDF) This document describes, in detail, the hardware and software implementation of a watthour meter using the STM32F101 microcontroller. This cost effective watt-hour meter uses shunt with an operational amplifier as a current sensor, an embedded 12-bit ADC for current...

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App note: Thermal design calculations for integrated stepper motor driver solutions

Sunday, November 26th, 2017

Another technical note from STMicroelectronics on fine tuning motor drivers for optimal thermal design. Link here (PDF) One constant trend in the automotive world is the tendency to reduce the size of electronic components and the ECUs (Electronic Control Unit). While this development has many benefits for the car manufacturer...

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App note: Pop & click in audio amplifiers

Sunday, November 26th, 2017

Technical note from STMicroelectronics about popping noise usually heard on audio amplifiers and how to minimize it. Link here (PDF) Pop and click, or rather, the absence of it, is a characteristic that makes a lot of impact in the world of audio amplifiers. This is especially true for those...

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App note: Adjustable gain with a current sensing

Sunday, November 12th, 2017

Application note from STMicroelectronics for fine tuning gain on current sensing amplifier. Link here (PDF) This application note explains how to use current sensing amplifiers with series resistors on the sense inputs. This approach is especially useful for applications where the gain must be adjusted.

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App note: Intelligent power switches for 48 V battery applications

Sunday, November 12th, 2017

Application note on controling Intelligent Power Switches (IPS) from STMicroelectronics. Link here (PDF) For the last 15-20 years, the automotive electronics market has been moving from electromechanical relays to solid state components for driving all kind of loads. It is obvious why: solid state components are smaller in size, lighter,...

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

Sunday, April 2nd, 2017

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...

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App note: A logic-level transient-voltage protected AC switch

Sunday, April 2nd, 2017

STMicroelectronics' AC switch directly controlled by microcontroller. Link here (PDF) Home appliances such as washing machines, refrigerators and dishwashers employ a lot of low power loads such as valves, door lock systems, dispensers or drain pumps. Since these loads are powered by the mains in ON / OFF mode, they...

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App note: EMC guidelines for microcontroller-based applications

Sunday, March 29th, 2015

Application note(PDF) specific on microcontroller EMC from ST Microelectronics. Electromagnetic compatibility (EMC) must be taken into account at the very beginning of a project as the cost of correcting an EMC problem encountered at the start of production can be far greater that the cost of a detailed EMC study...

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App note: EMC general information

Sunday, March 29th, 2015

Application note(PDF) on EMC from ST Microelectronics. Because many electronic circuits are in proximity to each other, it is essential that their design is not affected by external noise sources and that the circuit itself is not a noise source affecting other circuits. This relationship is known as electromagnetic compatibility...

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App note: LED array drivers

Sunday, November 9th, 2014

Here are STMicroelectronics' portfolio of LED array drivers(PDF). The use of LEDs in applications like displays, information and advertising panels, signs, traffic signals, automotive lighting and architectural lighting is becoming more and more common. LED array drivers, with accurate constant current regulation and embedded serial interfaces, offers a solution that...

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App note: Using the STM6600, STM6601 smart push-button on/off controller

Sunday, November 9th, 2014

An app note(PDF) on smart on/off controller and voltage monitoring chip from STMicroelectronics. These devices allow easy and safe control of applications run with one or two push-buttons by securely starting or powering down a system and also resetting the processor or disabling power in case of a non-responding application...

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