New-Tech Europe | December 2016 | Digital Edition

new products

TAS6424-Q1. To simulate and optimize the device, designers can download an IBIS model or request a

Industry’s first 2.1-MHz Class-D amplifier transforms automotive audio design Texas Instruments (TI) (NASDAQ:TXN) today introduced the first 2.1-MHz Class-D audio amplifier specifically designed for automotive applications. Supporting high-resolution 96-kHz digital input, the compact TAS6424-Q1 enables high-fidelity audio with low distortion in automotive infotainment applications. For more information, visit www.ti.com/tas6424q1-pr- eu. The TAS6424-Q1 enables the use of smaller external filters and eliminates up to 18 external components to reduce system size and cost compared to existing Class-D solutions. With maximum output power of 75 W per channel, the device features the industry’s highest switching rate and is the only audio amplifier that switches above the AM band. Key features and benefits of the TAS6424-Q1 Class-D audio amplifier  Reduces electromagnetic interference (EMI): Switching above the AM band eliminates the need for complex avoidance schemes and eases electromagnetic compatibility (EMC) designs while enabling the system to meet Comité International Spécial des Perturbations Radioélectriques (CISPR) 25Class 5EMC requirements.  Supports low impedance: Maintains stable audio playback while driving low impedance loads of 2 ohms.  Advanced AC load diagnostics and line driver mode: The TAS6424-Q1 provides detailed on-chip phase and impedance measurements that designers can use to configure the device with various outputs, such as woofer, tweeter and line-level connections.  Enhanced audio quality: Improves distortion, power-supply rejection and dynamic response with high-frequency switching.  Lower noise: An integrated digital-to-analog converter helps deliver a low system output noise of 42 uVrms for automotive designs like external amplifiers and head units.  Better thermal performance: Reduces power dissipation by as much as 60 percent compared to Class-AB amplifiers, greatly reducing the need for fans or large heat sinks. Tools and support to jump-start design The PurePath™ Console graphical user interface is available to help designers easily configure the

TAS6424-Q1 evaluation module. Package, availability and pricing

The TAS6424-Q1 is available now in a PowerPAD™ thermally enhanced shrink small-outline package (HSSOP) from the TI store and authorized distributors. Pricing is US$5.97 in 1,000-unit quantities.

Vicor introduces seven new DCMs in a ChiP package The DCM in a ChiP package is an isolated, regulated DC-DC converter, operating from an unregulated, wide range input to generate an isolated DC output. With its high frequency zero-voltage switching (ZVS) topology, the DCM converter consistently delivers high efficiency across the input line range. Modular DCM converters and downstream DC-DC products support efficient power distribution, providing superior power system performance and connectivity from a variety of unregulated power sources to the point-of-load. Aimed at a variety of applications, including UAV, ground vehicle, radar, transportation and industrial controls, Vicor has added four new 30 V input nominal modules (9 – 50V range) in a 3623 Chip package (1.52 x 0.90 x 0.29 in). These converters have output voltages of 5, 24, 28, and 48V, and power levels up to 160W, achieving a power density up to 404 W/in3. Also announced is a 28V input nominal module (16 – 50V range) in a 3623 ChiP package with a 3.3V output at 120W, a 375W module with a nominal input voltage of 275V (120 – 420V) and 12V output in a 4623 ChiP package, and a 270V input nominal module (160 – 420V range) in a 4623 ChiP package with a 48V output at 500W (1.89 x 0.90 x 0.29 in), achieving a power density of 1,014 W/ in3.

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