- 您現在的位置：買賣IC網 > PDF目錄98273 > TPA3124D2PWPR (TEXAS INSTRUMENTS INC) AUDIO AMPLIFIER, PDSO24 PDF資料下載
參數資料
| 型號： | TPA3124D2PWPR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | AUDIO AMPLIFIER, PDSO24 |
| 封裝： | PLASTIC, HTSSOP-24 |
| 文件頁數： | 4/29頁 |
| 文件大小： | 859K |
| 代理商： | TPA3124D2PWPR |
第1頁第2頁第3頁當前第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁
APPLICATION INFORMATION
CLASS-D OPERATION
Traditional Class-D Modulation Scheme
+VCC
0V
OutputCurrent
+VCC
0V
+VCC
0V
+VCC
0V
–VCC
DifferentialVoltage
AcrossSpeaker
Supply Pumping
SLOS578 – MAY 2008........................................................................................................................................................................................................ www.ti.com
This section focuses on the class-D operation of the TPA3124D2.
The TPA3124D2 operates in AD mode. There are two main configurations that may be used. For stereo
operation, the TPA3124D2 should be configured in a single-ended (SE) half-bridge amplifier. For mono
applications, TPA3124D2 may be used as a bridge-tied-load (BTL) amplifier. The traditional class-D modulation
scheme, which is used in the TPA3124D2 BTL configuration, has a differential output where each output is 180
degrees out of phase and changes from ground to the supply voltage, VCC. Therefore, the differential prefiltered
output
varies
between
positive
and
negative
VCC,
where
filtered
50%
duty
cycle
yields
0 V across the load. The class-D modulation scheme with voltage and current waveforms is shown in Figure 25
and Figure 26.
Figure 25. Class-D Modulation for TPA3124D2 SE Configuration
Figure 26. Class-D Modulation for TPA3124D2 BTL Configuration
One issue encountered in single-ended (SE) class-D amplifier designs is supply pumping. Power-supply pumping
is a rise in the local supply voltage due to energy being driven back to the supply by operation of the class-D
amplifier. This phenomenon is most evident at low audio frequencies and when both channels are operating at
the same frequency and phase. At low levels, power-supply pumping results in distortion in the audio output due
to fluctuations in supply voltage. At higher levels, pumping can cause the overvoltage protection to operate,
which temporarily shuts down the audio output.
12
Copyright 2008, Texas Instruments Incorporated
Product Folder Link(s): TPA3124D2
相關PDF資料 |
PDF描述 |
|---|---|
| TPA3124D2PWP | AUDIO AMPLIFIER, PDSO24 |
| TPA3125D2N | 36 W, 2 CHANNEL, AUDIO AMPLIFIER, PDIP20 |
| TPA3200D1DCP | 12.8 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO44 |
| TPA3200D1DCPR | 12.8 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO44 |
| TPA3200D1DCPRG4 | 12.8 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO44 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| TPA3124D2PWPRG4 | 功能描述:音頻放大器 15W Stereo Class-D Pwr Amp RoHS:否 制造商:STMicroelectronics 產品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TPA3125D2 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:10-W STEREO CLASS-D AUDIO POWER AMPLIFIER |
| TPA3125D2EVM | 功能描述:音頻 IC 開發工具 TPA3125D2EVM Eval Mod RoHS:否 制造商:Texas Instruments 產品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V |
| TPA3125D2N | 功能描述:音頻放大器 10W Stereo Class-D Audio Pwr Amp RoHS:否 制造商:STMicroelectronics 產品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TPA3128D2DAP | 功能描述:IC AUDIO AMP CLASS D 32HTSSOP 制造商:texas instruments 系列:- 包裝:管件 零件狀態:在售 類型:D 類 輸出類型:2 通道（立體聲） 不同負載時的最大輸出功率 x 通道數:30W x 2 @ 8 歐姆 電壓 - 電源:4.5 V ~ 26 V 特性:短路保護 安裝類型:表面貼裝 工作溫度:-40°C ~ 85°C（TA） 供應商器件封裝:32-HTSSOP 封裝/外殼:32-TSSOP（0.240"，6.10mm 寬）裸露焊盤 標準包裝:46 |
發布緊急采購，3分鐘左右您將得到回復。