- 您現在的位置：買賣IC網 > PDF目錄98273 > TPA3110D2PWP (TEXAS INSTRUMENTS INC) 15 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO28 PDF資料下載
參數資料
| 型號： | TPA3110D2PWP |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 15 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO28 |
| 封裝： | GREEN, PLASTIC, HTSSOP-28 |
| 文件頁數： | 15/34頁 |
| 文件大小： | 976K |
| 代理商： | TPA3110D2PWP |
第1頁第2頁第3頁第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頁當前第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頁第30頁第31頁第32頁第33頁第34頁
OUTP
OUTN
OUTP
Speaker
Current
OUTP
OUTN
OUTP-OUTN
Speaker
Current
OUTP
OUTN
OUTP-OUTN
Speaker
Current
0V
PVCC
NoOutput
PositiveOutput
NegativeOutput
0A
0V
-PVCC
OUTP-OUTN
SLOS528C – JULY 2009 – REVISED AUGUST 2010
www.ti.com
TPA3110D2 Modulation Scheme
The TPA3110D2 uses a modulation scheme that allows operation without the classic LC reconstruction filter
when the amp is driving an inductive load. Each output is switching from 0 volts to the supply voltage. The OUTP
and OUTN are in phase with each other with no input so that there is little or no current in the speaker. The duty
cycle of OUTP is greater than 50% and OUTN is less than 50% for positive output voltages. The duty cycle of
OUTP is less than 50% and OUTN is greater than 50% for negative output voltages. The voltage across the load
sits at 0V throughout most of the switching period, reducing the switching current, which reduces any I2R losses
in the load.
Figure 39. The TPA3110D2 Output Voltage and Current Waveforms Into an Inductive Load
Ferrite Bead Filter Considerations
Using the Advanced Emissions Suppression Technology in the TPA3110D2 amplifier it is possible to design a
high efficiency Class-D audio amplifier while minimizing interference to surrounding circuits. It is also possible to
accomplish this with only a low-cost ferrite bead filter. In this case it is necessary to carefully select the ferrite
bead used in the filter.
One important aspect of the ferrite bead selection is the type of material used in the ferrite bead. Not all ferrite
material is alike, so it is important to select a material that is effective in the 10 to 100 MHz range which is key to
the operation of the Class D amplifier. Many of the specifications regulating consumer electronics have
emissions limits as low as 30 MHz. It is important to use the ferrite bead filter to block radiation in the 30 MHz
and above range from appearing on the speaker wires and the power supply lines which are good antennas for
these signals. The impedance of the ferrite bead can be used along with a small capacitor with a value in the
range of 1000 pF to reduce the frequency spectrum of the signal to an acceptable level. For best performance,
the resonant frequency of the ferrite bead/ capacitor filter should be less than 10 MHz.
22
Copyright 2009–2010, Texas Instruments Incorporated
Product Folder Link(s) :TPA3110D2
相關PDF資料 |
PDF描述 |
|---|---|
| TPA3117D2RHBR | AUDIO AMPLIFIER, PQCC32 |
| TPA3117D2RHBT | AUDIO AMPLIFIER, PQCC32 |
| TPA3120D2PWPR | 20 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO24 |
| TPA3120D2PWP | 20 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO24 |
| TPA3120D2PWPG4 | 20 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO24 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| TPA3110D2PWPR | 功能描述:音頻放大器 15W Class D Stereo Amplifier 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 |
| TPA3110D2QPWPRQ1 | 功能描述:音頻放大器 AC 15W Fltr-Free Class D Stereo 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 |
| TPA3110LD2PWPR | 制造商:Texas Instruments 功能描述:class d subsystem |
| TPA3111D1 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:10-W FILTER-FREE MONO CLASS-D AUDIO POWER AMPLIFIER with SPEAKER GUARD? |
| TPA3111D1_101 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:10-W FILTER-FREE MONO CLASS-D AUDIO POWER AMPLIFIER with SPEAKER GUARDa?￠ |
發布緊急采購，3分鐘左右您將得到回復。