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TPA3113D2_17

更新时间： 2024-11-21 02:58:31
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德州仪器 - TI /
页数 文件大小 规格书
33页 998K
描述
6-W Filter-Free Stereo Class-D Audio Power Amplifier With SpeakerGuard

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TPA3113D2  
www.ti.com  
SLOS650C –AUGUST 2009–REVISED JULY 2010  
6-W FILTER-FREE STEREO CLASS-D AUDIO POWER AMPLIFIER WITH  
SPEAKERGUARD™  
Check for Samples: TPA3113D2  
1
FEATURES  
DESCRIPTION  
2
•
•
•
•
6-W/ch into an 8-Ω Loads at 10% THD+N From  
a 10-V Supply  
The TPA3113D2 is a 6-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.  
12-W into a 4-Ω Mono Load at 10% THD+N  
From a 10-V Supply  
87% 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  
The TPA3113D2 can drive stereo speakers as low as  
4 Ω. The high efficiency of the TPA3113D2, 87%,  
eliminates the need for an external heat sink when  
playing music.  
•
•
•
Excellent THD+N / Pop-Free Performance  
Four Selectable, Fixed Gain Settings  
Differential Inputs  
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.  
APPLICATIONS  
•
•
•
Televisions  
Consumer Audio Equipment  
Monitors  
1mF  
OUTL+  
LINP  
LINN  
TPA3113D2  
Audio  
Source  
OUTL-  
FERRITE  
BEAD  
OUTPL  
OUTNL  
OUTR+  
OUTR-  
RINP  
RINN  
6W  
8W  
FILTER  
GAIN0  
GAIN1  
FERRITE  
BEAD  
OUTPR  
OUTNR  
6W  
8W  
FILTER  
PLIMIT  
PBTL  
Fault  
SD  
8 to 26V  
PVCC  
Figure 1. TPA3113D2 Simplified Application Schematic  
1
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.  
2
SpeakerGuard, PowerPad are trademarks of Texas Instruments.  
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 © 2009–2010, Texas Instruments Incorporated  
 
 
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