參數(shù)資料
型號(hào)： TPA3106D1VFPRG4
廠商： TEXAS INSTRUMENTS INC
元件分類(lèi)： 音頻／視頻放大
英文描述： 40 W, 1 CHANNEL, AUDIO AMPLIFIER, PQFP32
封裝： 7 X 7 MM, GREEN, PLASTIC, HLQFP-32
文件頁(yè)數(shù)： 7/35頁(yè)
文件大?。?/td> 1250K
代理商： TPA3106D1VFPRG4
www.ti.com
CLASS-D OPERATION
Traditional Class-D Modulation Scheme
0V
-12V
+12V
Current
OUTP
DifferentialVoltage
AcrossLoad
OUTN
TPA3106D1 Modulation Scheme
SLOS516B – OCTOBER 2007 – REVISED MARCH 2007
This section focuses on the class-D operation of the TPA3106D1.
The traditional class-D modulation scheme, which is used in the TPA032D0x family, 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 traditional class-D modulation scheme with voltage and current waveforms is shown in
Figure 26. Note that even at an average of 0 V across the load (50% duty cycle), the current to the load is high,
causing high loss and thus causing a high supply current.
Figure 26. Traditional Class-D Modulation Scheme's Output Voltage and Current Waveforms into an
Inductive Load With No Input
The TPA3106D1 uses a modulation scheme that still has each output switching from 0 to the supply voltage.
However, OUTP and OUTN are now in phase with each other with no input. 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 0 V throughout most
of the switching period, greatly reducing the switching current, which reduces any I2R losses in the load.
Copyright 2007, Texas Instruments Incorporated
15
Product Folder Link(s): TPA3106D1
相關(guān)PDF資料
PDF描述
TPA3106D1VFPR 40 W, 1 CHANNEL, AUDIO AMPLIFIER, PQFP32
TPA3106D1VFP 40 W, 1 CHANNEL, AUDIO AMPLIFIER, PQFP32
TPA3107D2PAPR 15 W, 2 CHANNEL, AUDIO AMPLIFIER, PQFP64
TPA3107D2PAPT 15 W, 2 CHANNEL, AUDIO AMPLIFIER, PQFP64
TPA3107D2PAP 15 W, 2 CHANNEL, AUDIO AMPLIFIER, PQFP64
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPA3107D2 制造商:TI 制造商全稱(chēng):Texas Instruments 功能描述:15-W STEREO CLASS-D AUDIO POWER AMPLIFIER
TPA3107D2_07 制造商:TI 制造商全稱(chēng):Texas Instruments 功能描述:15-W STEREO CLASS-D AUDIO POWER AMPLIFIER
TPA3107D2EVM 功能描述:音頻 IC 開(kāi)發(fā)工具 AUD POWER AMP RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類(lèi)型:Audio Amplifiers 工具用于評(píng)估:TAS5614L 工作電源電壓:12 V to 38 V
TPA3107D2PAP 功能描述:音頻放大器 15W Stereo Class-D Aud Power Amp RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類(lèi)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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
TPA3107D2PAPG4 功能描述:音頻放大器 15W Stereo Class-D Aud Power Amp RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類(lèi)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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
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