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TAS5622A_15

更新时间： 2024-11-26 02:58:23
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德州仪器 - TI /
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31页 964K
描述
125-W Stereo and 250-W Stereo PurePath HD Digital-Input Class-D Power Stage

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TAS5622A_15 数据手册

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TAS5622A  
www.ti.com  
SLAS845 –MAY 2012  
125-W Stereo / 250-W Stereo PurePath™ HD Digital-Input Class-D Power Stage  
Check for Samples: TAS5622A  
1
FEATURES  
DESCRIPTION  
The TAS5622A is a thermally-enhanced version of  
the class-D power amplifier based on the TAS5612A  
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.  
234  
•
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  
•
•
Pre-Clipping Output for Control of a Class-G  
Power Supply  
The unique pre clipping 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  
TAS5622A leads to industry leading levels of  
efficiency ensuring a super “green” system.  
Reduced Heat Sink Size due to use of 40mΩ  
Output MOSFET with >90% Efficiency at Full  
Output Power  
•
•
Output Power at 10%THD+N  
The TAS5622A 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.  
–
–
125 W / 4 Ω BTL Stereo Configuration  
250 W / 2 Ω PBTL Mono Configuration  
Output Power at 1%THD+N  
–
–
105 W / 4 Ω BTL Stereo Configuration  
210 W / 2 Ω PBTL Mono Configuration  
The high integration of the TAS5622A makes the  
amplifier easy to use; and, using TI’s reference  
schematics and PCB layouts leads to fast design in  
time. The TAS5622A is available in the space saving  
•
•
Click and Pop Free Startup  
Error Reporting Self-protected Design with  
UVP, Over Temperature, and Short Circuit  
Protection  
surface  
mount  
44-pin  
HTSSOP  
package.  
PowerPAD™ PurePath™ HD  
•
•
EMI Compliant when used with Recommended  
System Design  
PurePath HDTM  
TASxxxx  
Digital Audio  
Processor  
DIGITAL  
44-Pin HTSSOP (DDV) Package for Reduced  
Board Size  
TAS5622A  
AUDIO  
INPUT  
APPLICATIONS  
+12V  
18V-32.5V  
•
•
•
•
Blu-ray™/DVD Receivers  
PurePath HDTM  
High Power Sound Bars  
+3.3V  
REG.  
Class G Power Supply  
Ref design  
Powered Subwoofer and Active Speakers  
Mini Combo Systems  
105VAC  
240VAC  
→
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
3
4
PowerPAD, PurePath are trademarks of Texas Instruments.  
Blu-ray is a trademark of Blu-ray Disk Association (BDA).  
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 © 2012, Texas Instruments Incorporated  
1234567...31

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