TAS5624A_16 Datasheet, PDF (1/39 Pages) Texas Instruments – 150-W Stereo and 300-W Mono PurePath HD Digital-Input Class-D Power Stage

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TAS5624A
SLAS844A – MAY 2012 – REVISED JANUARY 2016
TAS5624A 150-W Stereo and 300-W Mono PurePath™ HD Digital Input Class-D Power
Stage
1 Features
•1 PurePath™ HD Integrated Feedback Provides:
– 0.025% THD at 1 W into 4 Ω
– > 65-dB PSRR (No Input Signal)
– > 105-dB (A-Weighted) SNR
• Preclipping Output for Control of a Class-G Power
Supply
• Reduced Heat Sink Size Due to Use of 40-mΩ
Output MOSFET With > 90% Efficiency at Full
Output Power
• Output Power at 10% THD+N
– 150-W and 4-Ω BTL Stereo Configuration
– 300-W and 2-Ω PBTL Mono Configuration
• Output Power at 10% THD+N
– 125-W and 4-Ω BTL Stereo Configuration
– 250-W and 2-Ω PBTL Mono Configuration
• Click-Free and Pop-Free Start-Up
• Error Reporting Self-Protected Design With UVP,
Overtemperature, and Short-Circuit Protection
• EMI-Compliant When Used With Recommended
System Design
• 44-Pin HTSSOP (DDV) Package for Reduced
Board Size
2 Applications
• Blu-ray™ and DVD Receivers
• High-Power Sound Bars
• Powered Subwoofer and Active Speakers
• Mini Combo Systems
3 Description
The TAS5624A device is a thermally-enhanced
version of the class-D power amplifier based on the
TAS5614A using large MOSFETs for improved power
efficiency and a novel gate-drive scheme for reduced
losses in idle and at low-output signals leading to
reduced heat sink size.
The unique preclipping output signal can be used to
control a Class-G power supply. This combined with
the low idle loss and high power efficiency of the
TAS5624A leads to industry leading levels of
efficiency ensuring a super green system.
The TAS5624A uses constant voltage gain. The
internally-matched gain resistors ensure a high power
supply rejection ratio giving an output voltage only
dependent on the audio input voltage and free from
any power supply artifacts.
The high integration of the TAS5624A makes the
amplifier easy to use; and, using TI’s reference
schematics and PCB layouts leads to fast design in
time. The TAS5624A is available in the space-saving,
surface-mount 44-pin HTSSOP package.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TAS5624A
HTSSOP (44)
14.00 mm × 6.10 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical TAS5624A Application Block Diagram
DIGITAL
AUDIO
INPUT
TAS xxxx
Digital Audio
Processor
PurePath HD^TM
TAS_TA56_S30_5624A
+12V
18V-36V
+3.3V
REG.
PurePath HD^TM
Class G Power Supply
Ref design
→ ^{105VAC 240VAC}
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.