Power supply IC packs eight buck regulators

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Aimed at systems requiring multiple low-voltage supplies, Linear Technology’s LTC3374A can be configured to supply two to eight independent regulated outputs with 15 possible output-current configurations. Each of the eight synchronous 1-A buck converters is powered from an independent 2.25-V to 5.5-V input supply. Output voltage range is 0.8 V to VIN. by @ edn.com

The LTC3374A is well-suited for a variety of multichannel applications, including industrial, automotive, and communication systems. Along with a peak efficiency of 94%, the device provides one output with ±1% voltage accuracy and up to seven additional outputs with ±2% accuracy. Up to four adjacent buck regulators can be combined in parallel to provide up to 4 A of output current with a single shared inductor by connecting their VIN pins together, their SW pins together, and by connecting the slave bucks’ FB pins to the input supply.

Power supply IC packs eight buck regulators – [Link]

Rail-to-rail step-down regulator sinks/sources ±5A from 0V to 14.5VOUT

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LTC3623 is a ±5A high efficiency, current mode synchronous buck regulator that is adjustable from 14.5V down to 0V output with a single resistor. Its architecture uses a 50 µA current reference, combined with a single resistor, to set the output voltage. by Graham Prophet @ edn-europe.com

The LTC3623’s 4V to 15V input voltage range is suitable for dual-cell Li-Ion applications, and fixed 5V and 12V intermediate bus systems. Low R DS(ON) integrated N-channel power MOSFETs (60mΩ top & 30 mΩ bottom) and synchronous rectification deliver efficiencies up to 96%. The device’s design allows dynamic adjustment of output voltage from 0V to V IN – 0.5V, offering virtually rail-to-rail performance.

Rail-to-rail step-down regulator sinks/sources ±5A from 0V to 14.5VOUT – [Link]

DIY Lorentz Force Experiment

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Fabian Gebhart shared his Lorentz Force experiment on Thingiverse:

Don’t you love it? Magnetism? Electronics? And 3d printing? In this project I combine all of them together to a little but spectacular do-it-yourself experiment. With just a few components and the 3d printed part you will be able to build your own Lorentz Force Experiment.

DIY Lorentz Force Experiment – [Link]

ams AS1383 A 200mA, 3.5MHz DC-DC Boost Converter

If you have a single Li-Ion battery powered application, then you need to think about using AS1383 in your design.

AS1383 is a DC-DC boost converter comes in a 6-pin WL-CSP package with 0.4mm pitch, a very small package suits the limited space applications. In the below image, you can compare the WL-CSP package with the 0805 SMD capacitor to know how small it is.

AS1383 And 0805 Capacitors
AS1383 And 0805 Capacitors

AS1383 uses 3.5MHz switching frequency and this high frequency allows the usage of a low profile inductor with only 1μH.

The input voltage range is from 2.7V to 5.5V and The output voltage range is from 2.7V to 5.0V with 200mA output current. It has an enable input pin to reduce the supply current to < 1μA.

AS1383 is available in three options:

  • AS1383-BWLT-AD an adjustable Vout version.
  • AS1383-BWLT-45 a 4.5V fixed Vout.
  • AS1383-BWLT-50 a 5.0V fixed Vout.

The output voltage in the adjustable version can be selected with external resistor divider connected to the FB pin.

The AS1383 price is 0.25$ for 1K order. Also, an evaluation Kit for AS1383 is available for 49$.

I obtained the schematic and the BOM from the evaluation kit manual.

Evaluation Kit for AS1383
Evaluation Kit for AS1383

 

The Schematic of The Evaluation Kit for AS1383
The Schematic of The Evaluation Kit for AS1383

 

The BOM of The Evaluation Kit
The BOM of The Evaluation Kit

Data sheet

Product page

Via: Mouser

It’s the end of C as we know it!

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beningo.com discuss about the future of C language and it’s use in embedded systems.

The C programming language has been with embedded software developers since its creation in 1972. Ever since then C has been a blazing constant, surviving even the big push in the late 90’s and early 21st century to move to C++ or other object oriented languages. Undoubtedly, C will continue to be a foundational language for embedded systems but over the last year, the language has begun to see a decrease in popularity.

It’s the end of C as we know it! – [Link]

Bi-Directional Voltage Level Translator

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Lukas Fassler from Soldernerd shares his experience designing a bi-directional voltage level translator and manufacturing the board with DirtyPCBs.

While most of my microcontroller designs run on 3.3 volts there is still the occasional 5 volt design. Or I do something with an Arduino. So the need may arise to interface between logic working at different voltage levels. There are several ways of doing this, depending on your needs. Things are relatively simple as long as you know in advance which side is transmitting and which side is receiving. It gets more difficult if the communication is bi-directional or with buses such as I2C that are bi-directional by nature.

Bi-Directional Voltage Level Translator – [Link]

Cheap homemade 30 MHz – 6 GHz vector network analyzer

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Henrik Forstén has done amazing job designing a homemade vector analyzer with the goal to fit it’s budget of 200EUR. The design is open source and available on github.

Vector network analyzer (VNA) are used to measure scattering parameters of high frequency circuits. When frequency is high enough the reflections of the waves start to matter and distributed effects need to be taken into account. VNA can be used to analyze reflection and transmission coefficients of circuits at high frequencies.

Cheap homemade 30 MHz – 6 GHz vector network analyzer – [Link]

Projecta: A Solution For PCB Printing

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Projecta, the Affordable & Faster PCB Prototyping Machine is going to launch their kickstarter campaign soon. Check the draft kickstarter page and feel free to post your feedback.

Projecta is an affordable desktop CNC machine optimized for making circuit boards in new innovative way.

Projecta: A Solution For PCB Printing – [Link]

Siglent oscilloscope SDS1102X review

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Harry Baggen @ elektormagazine.com reviews the Siglent SDS1102X oscilloscope.
Before we take a look at the instrument itself, I would like to say something about the characteristics of an oscilloscope for ‘small users’. What do you really need for your daily tasks? Even the cheapest models from Chinese manufacturers already have a sample rate of 500 MS/s or 1 GS/s, much more than what the typical electronics engineer needs. More important is the input bandwidth, which is an indication of the quality of the analog input stage, which, for example, could be 50 or 100 MHz. Most electronic engineers work on circuits with frequencies up to a few megahertz and then a simple USB scope with a sample rate of 100 MS/s and an input bandwidth of 10 MHz is already more than sufficient.

Siglent oscilloscope SDS1102X review – [Link]

Dual 90V/10A Unregulated Power Supply

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This project is designed to provide symmetrical output unregulated, high voltage, high current for your demanding needs.  Right choice for Audio Amplifiers, Power Drivers, Motor Drivers etc

Features

  • Input – maximum 65 VAC center-tap, 10Amp
  • Symmetrical unregulated, individually fused outputs
  • 10A bridge rectifier on board
  • LED indication for both the outputs
  • PCB mounted LUGS for connecting of input and output
  • Four mounting holes of 3.2 mm each
  • PCB Dimensions 154 mm x 84 mm

Dual 90V/10A Unregulated Power Supply – [Link]