TAS5162_0705 Datasheet, PDF (1/29 Pages) Texas Instruments – 2 x 210 Watt STEREO DIGITAL AMPLIFIER POWER STAGE

TM
TAS5162
www.ti.com
SLES194C – OCTOBER 2006 – REVISED MAY 2007
2 x 210 Watt STEREO DIGITAL AMPLIFIER POWER STAGE
FEATURES
• 2×160 W at 10% THD+N Into 8-Ω BTL
• 2×210 W at 10% THD+N Into 6-Ω BTL
• 1×300 W at 10% THD+N Into 4-Ω PBTL ⁽¹⁾
• >110 dB SNR (A-Weighted, TAS5518
Modulator)
• <0.09% THD+N at 1 W
• Two Thermally Enhanced Package Options:
– DKD (36-pin PSOP3)
– DDV (44-pin HTSSOP)
• High-Efficiency Power Stage (>90%) With
80-mΩ Output MOSFETs
• Power-On Reset for Protection on Power Up
Without Any Power-Supply Sequencing
• Integrated Self-Protection Circuits Including
Undervoltage, Overtemperature, Overload,
Short Circuit
• Error Reporting
• EMI Compliant When Used With
Recommended System Design
• Intelligent Gate Drive
• Mid-Z Ramp Compatible for reduced "pop
noise"
APPLICATIONS
• Mini/Micro Audio System
• DVD Receiver
• Home Theater
DESCRIPTION
The TAS5162 is a high performance, integrated
stereo digital amplifier power stage with an improved
protection system. The TAS5162 is capable of
driving a 6-Ω bridge-tied load (BTL) at up to 210 W
per channel at THD = 10%, low integrated noise at
the output, low THD+N performance without clipping,
and low idle power dissipation.
A low-cost, high-fidelity audio system can be built
using a TI chipset, comprising a modulator (e.g.,
TAS5508) and the TAS5162. PurePath Digital™
This system only requires a simple passive LC
demodulation filter to deliver high-quality,
high-efficiency audio amplification with proven EMI
compliance. This device requires two power
supplies, at 12 V for GVDD and VDD, and at 50V for
PVDD. The TAS5162 does not require power-up
sequencing due to internal power-on reset. The
efficiency of this digital amplifier is greater than 90%
into 6 Ω, which enables the use of smaller power
supplies and heatsinks.
The TAS5162 has an innovative protection system
integrated on-chip, safeguarding the device against a
wide range of fault conditions that could damage the
system. These safeguards are short-circuit
protection, overcurrent protection, undervoltage
protection, and overtemperature protection. The
TAS5162 has a new proprietary current-limiting
circuit that reduces the possibility of device shutdown
during high-level music transients. A new
programmable overcurrent detector allows the use of
lower-cost inductors in the demodulation output filter.
BTL OUTPUT POWER vs SUPPLY VOLTAGE
220
200 ^TC ^{= 75°C}
6W
180
160
140
4W
120
100
8W
80
60
40
20
0
0 5 10 15 20 25 30 35 40 45 50
PV_DD - Supply Voltage (BTL) - Vrms
(1) The DDV package will deliver the stated maximum power
levels; however, this is dependant on system
configuration. The smaller pad area also makes the
thermal interface to the heatsink more important. For
multichannel systems that require two channels to be
driven at full power with the DDV package option, it is
recommended to design the system so that the two
channels are in two separate devices.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PurePath Digital, PowerPad are trademarks of Texas Instruments.
All other trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2006–2007, Texas Instruments Incorporated