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new products
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. To simulate and optimize the device,
designers can download an IBIS model or request a
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.
66 l New-Tech Magazine Europe