All items tagged with power supplies (20)

ICEpower Launches 1000S Power Supply for 2-Way and 3-Way Designs

April 6, 2023 by audioXpress Staff

ICEpower Launches 1000S Power Supply for 2-Way and 3-Way Designs

Audio amplification solutions company ICEpower announced availability of its latest 1000S power supply, filling a gap in the company's portfolio for high-power amplification equipment. Based on the resonant LLC converter of the tried and tested ICEpower 700AS1 module, the new 1000S offers a stable and consistent power supply solution in a compact format to pair with the company's 300A2 and 400A2 modules for applications in hifi, commercial amps, whole home audio and active speakers.

GaN Systems Extends Class D Audio Solutions With New Amplifier Modules and Boost Converters

October 25, 2022 by audioXpress Staff

GaN Systems Extends Class D Audio Solutions With New Amplifier Modules and Boost Converters

GaN Systems extended its lead in Class D GaN-powered audio with the release of two complete Class-D high-performance GaN FET amplifier boards and two complete audio boost converter solutions for marine, auto, and battery-powered vehicles. GaN Systems now provides a comprehensive solution of turnkey amplifier designs, power supplies, and boost converters — allowing audio systems designers across automotive, home, and professional markets to mix and match designs to maximize performance for specific applications.

Closer to Home. audioXpress October 2022 Is Now Available

September 9, 2022 by audioXpress Staff

Closer to Home. audioXpress October 2022 Is Now Available

There's a lot of everything in audioXpress October 2022. Starting with a market update on audio for Residential Integration. Next, Jonny McClintock shares The Story of aptX, Gary Galo reviews Sumiko phono cartridges and new 78 rpm stylus, Richard Honeycutt explains RT Measurement, Frans de Wit tackles the design of a DC Power Supply, Ken Bird builds a pair of tower speakers with Oaktron drivers manufactured in the US, and Christopher Paul writes about Triode Common Cathode Stages and its controversies.

Audio Electronics - Cascodes, Folded Cascodes, and Current Mirrors (Part 3)

February 2, 2022 by Morty Tarr

Audio Electronics - Cascodes, Folded Cascodes, and Current Mirrors (Part 3)

For those readers following the fascinating article series by Morty Tarr on "Cascodes, Folded Cascodes, and Current Mirrors," this final article in the series contains an additional section with important aspects of amplifier design. In the first two parts of this article series, Tarr discussed the technical merits of cascodes and related circuits. This useful addendum covers a simple test circuit for matching FET devices, the fascinating story of the Blowtorch Line Stage design, and additional notes on inverting and non-inverting amplifier stages and integrators. This article was originally published in audioXpress, December 2021.

audioXpress January 2022 Looks Ahead at Speaker Technology Developments

December 13, 2021 by audioXpress Staff

audioXpress January 2022 Looks Ahead at Speaker Technology Developments

Great articles, practical projects, reviews, and audio technology previews start the year in full force! That's what our readers will find in audioXpress January 2022, starting with an update on new materials and engineering approaches for loudspeakers, and articles by Charlie Hughes, Scott Dorsey, Frans de Wit, Ken Bird and Mike Harkins. Brent Butterworth reviews the Olive Pro earbuds, while Raj Senguttuvan from Knowles discusses differentiation for True Wireless Stereo (TWS) design and development.

New DC/DC Controllers with Integrated Active EMI Filter for Compact Power Supplies

April 9, 2021 by audioXpress Staff

New DC/DC Controllers with Integrated Active EMI Filter for Compact Power Supplies

Texas Instruments (TI) introduced a new family of synchronous DC/DC buck controllers that enable smaller power-supply solutions with lower electromagnetic interference (EMI). Featuring an integrated active EMI filter (AEF) and dual-random spread-spectrum (DRSS) technology, the LM25149-Q1 and LM25149 enable designers to cut the area of the external EMI filter in half, lower the conducted EMI of the power design by as much as 55 dBµV across multiple frequency bands, or achieve a combination of reduced filter size and low EMI.

Searching for a Unicorn Part 2: Generating a Good Signal Source

January 27, 2021 by Brian Lowe

Searching for a Unicorn Part 2: Generating a Good Signal Source

In this second article, Brian Lowe (Belleson LLC) continues his search for the Unicorn of "Measuring Voltage Regulator Ripple Rejection," this time focusing on the test fixtures. Testing a voltage regulator with exceptionally good performance requires an even more exceptional signal source and measurement setup to measure sub-microVolt ripple across a wide frequency range. Complementing the final article, Jan Didden, offers an informative sidebar about super regulators. This article was originally published in audioXpress, June 2019.

Searching for a Unicorn Part 1: Measuring Voltage Regulator Ripple Rejection

January 20, 2021 by Brian Lowe

Searching for a Unicorn Part 1: Measuring Voltage Regulator Ripple Rejection

In this article Brian Lowe shares a fascinating journey in his search for a "Unicorn" that is measuring voltage regulator ripple rejection - or power supply rejection ratio (PSRR). Lowe is the founder and principle engineer at Belleson, LLC, and he has devoted a lot of time to this fascinating "quest." This article was originally published in audioXpress, May 2019.

Power Control Reference Design Enables a Secondary Side Microcontroller to Control Primary Power

January 7, 2021 by audioXpress Staff

Power Control Reference Design Enables a Secondary Side Microcontroller to Control Primary Power

Microchip announced a new reference design using its MCP1012 high voltage auxiliary AC-DC controller, demonstrating the ability to remove the independent bias power supply in many applications. The MCP1012 offline auxiliary device enables the system to transfer control of the power and duty cycle to a secondary MCU. The reference design includes a patented isolation technique called Inde-Flux transformer technology being licensed to Würth Elektronik eiSos.

Keysight Technologies Infiniium EXR-Series Oscilloscopes Offer Advanced Automated Measurement Technology

November 16, 2020 by Cristina Costa

Keysight Technologies Infiniium EXR-Series Oscilloscopes Offer Advanced Automated Measurement Technology

Keysight Technologies announced the new Infiniium 8-channel oscilloscope technology. Keysight's Infiniium EXR-Series Mixed Signal Oscilloscopes include eight models ranging from 500 MHz to 2.5 GHz and either 4 or 8 channels with wide-ranging upgradeability. The EXR-Series' waveform update rate is >200,000 waveforms/sec., allowing it to quickly build eye-diagrams capturing 5.7 Million UIs. Powerful and intuitive, the new oscilloscope series reduces test bench and workflow complexity.

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