TPA3117D2 Datasheet, PDF (1/30 Pages) Texas Instruments – 15-W Filter-Free Stereo Class-D Audio Power Amplifier

TPA3117D2
www.ti.com
SLOS672 – OCTOBER 2010
15-W Filter-Free Stereo Class-D Audio Power Amplifier with SpeakerGuard™
Check for Samples: TPA3117D2
FEATURES
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•2 15-W/ch into 8Ω Loads at 10% THD+N From a
16V Supply
• 10-W/ch into 8Ω Loads at 10% THD+N From a
13V Supply
• 90% Efficient Class-D Operation Eliminates
Need for Heat Sinks
• Wide Supply Voltage Range Allows Operation
from 8V to 26V
• Filter-Free Operation
• SpeakerGuard™ Speaker Protection Includes
Adjustable Power Limiter
• Excellent THD+N / Pop-Free Performance
• Four Selectable, Fixed Gain Settings
• Differential Inputs
• Selectable Switching Frequency (290kHz or
390kHz) Allows Multiple Devices to be Used in
One System
• Integrated 5V Regulator With up to 30 mA of
Output Current for Powering External Data
Converters
• 5mm x 5mm QFN Packaging
APPLICATIONS
• Televisions
• Consumer Audio Equipment
• All-in-One Computers
DESCRIPTION
The TPA3117D2 is a 15W (per channel) efficient,
Class-D audio power amplifier for driving bridged-tied
stereo speakers. Advanced EMI Suppression
Technology enables the use of inexpensive ferrite
bead filters at the outputs while meeting EMC
requirements. SpeakerGuard™ speaker protection
circuitry includes an adjustable power limiter. The
adjustable power limiter allows the user to set a
"virtual" voltage rail lower than the chip supply to limit
the amount of current through the speaker.
The TPA3117D2 can drive stereo speakers as low as
4Ω. The high efficiency of the TPA3117D2, 90%,
eliminates the need for an external heat sink when
playing music.
The outputs are also fully protected against shorts to
GND, V_CC, and output-to-output. The short-circuit
protection and thermal protection includes an
auto-recovery feature.
SPACER
OUTL+
Audio OUTL-
Source
OUTR+
OUTR-
VDD
2.2mF
10W
1mF
LINP
LINN
TPA3117D2
RINP
RINN
GAIN0
GAIN1
REG_OUT
PLIMIT
PBTL
FSEL
SD
OUTPL
OUTNL
OUTPR
OUTNR
PVCC
FERRITE
BEAD
FILTER
FERRITE
BEAD
FILTER
15W
8W
15W
8W
8 to 26V
Figure 1. TPA3117D2 Simplified Application Schematic
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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.
SpeakerGuard is a trademark of Texas Instruments.
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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 © 2010, Texas Instruments Incorporated