TPA3110D2 Datasheet, PDF (1/33 Pages) Texas Instruments – 15-W FILTER-FREE STEREO CLASS-D AUDIO POWER AMPLIFIER with SPEAKERGUARD™

TPA3110D2
www.ti.com....................................................................................................................................................................................................... SLOS528 – JULY 2009
15-W FILTER-FREE STEREO CLASS-D AUDIO POWER AMPLIFIER with
SPEAKERGUARD™
FEATURES
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•2 15-W/ch into an 8-Ω Loads at 10% THD+N
From a 16-V Supply
• 10-W/ch into 8-Ω Loads at 10% THD+N From a
13-V Supply
• 30-W into a 4-Ω Mono Load at 10% THD+N
From a 16-V Supply
• 90% Efficient Class-D Operation Eliminates
Need for Heat Sinks
• Wide Supply Voltage Range Allows Operation
from 8 V to 26 V
• Filter-Free Operation
• SpeakerGuard™ Speaker Protection Includes
Adjustable Power Limiter plus DC Protection
• Flow Through Pin Out Facilitates Easy Board
Layout
• Robust Pin-to-Pin Short Circuit Protection and
Thermal Protection with Auto Recovery Option
• Excellent THD+N / Pop-Free Performance
• Four Selectable, Fixed Gain Settings
• Differential Inputs
APPLICATIONS
• Televisions
• Consumer Audio Equipment
DESCRIPTION
The TPA3110D2 is a 15-W (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 and a
DC detection circuit. 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 DC detect circuit measures
the frequency and amplitude of the PWM signal and
shuts off the output stage if the input capacitors are
damaged or shorts exist on the inputs.
The TPA3110D2 can drive stereo speakers as low as
4 Ω. The high efficiency of the TPA3110D2, 90%,
eliminates the need for an external heat sink when
playing music.
The outputs are also fully protected against shorts to
GND, VCC, and output-to-output. The short-circuit
protection and thermal protection includes an
auto-recovery feature.
Audio
Source
OUTL-
OUTL+
OUTR+
OUTR-
1mF
LINP
LINN
TPA3110D2
RINP
RINN
GAIN0
GAIN1
PLIMIT
PBTL
OUTPL
OUTNL
OUTPR
OUTNR
FERRITE
BEAD
FILTER
FERRITE
BEAD
FILTER
15W
8W
15W
8W
Fault
SD
PVCC
8 to 26V
Figure 1. TPA3110D2 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, PowerPad are trademarks 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 © 2009, Texas Instruments Incorporated