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參數(shù)資料
型號(hào): TPA2005D1ZQYRQ1
廠(chǎng)商: TEXAS INSTRUMENTS INC
元件分類(lèi): 音頻/視頻放大
英文描述: 1.45 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA
封裝: 2.5 X 2.5 MM, LEAD FREE
文件頁(yè)數(shù): 9/29頁(yè)
文件大小: 1192K
代理商: TPA2005D1ZQYRQ1
0 V
–5 V
+5 V
Current
OUT+
Differential Voltage
Across Load
OUT–
TPA2005D1 Modulation Scheme
0 V
–5 V
+5 V
Current
OUT+
OUT–
Differential
Voltage
Across
Load
0 V
–5 V
+5 V
Current
OUT+
OUT–
Differential
Voltage
Across
Load
Output = 0 V
Output > 0 V
www.ti.com............................................................................................................................................. SLOS474B – AUGUST 2005 – REVISED DECEMBER 2008
Figure 34. Traditional Class-D Modulation Scheme Output Voltage and Current Waveforms Into an
Inductive Load With No Input
The TPA2005D1 uses a modulation scheme that still has each output switching from 0 to the supply voltage.
However, OUT+ and OUT– are now in phase with each other, with no input. The duty cycle of OUT+ is greater
than 50% and OUT– is less than 50% for positive voltages. The duty cycle of OUT+ is less than 50% and OUT–
is greater than 50% for negative voltages. The voltage across the load remains at 0 V throughout most of the
switching period, greatly reducing the switching current, which reduces any I2R losses in the load.
Figure 35. The TPA2005D1 Output Voltage and Current Waveforms Into an Inductive Load
Copyright 2005–2008, Texas Instruments Incorporated
17
Product Folder Link(s): TPA2005D1-Q1
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPA2006D1 制造商:TI 制造商全稱(chēng):Texas Instruments 功能描述:1.45-W MONO FILTER-FREE CLASS-D AUDIO POWER AMPLIFIER WITH 1.8-V COMPATIBLE INPUT THRESHOLDS
TPA2006D1DRB 制造商:TI 制造商全稱(chēng):Texas Instruments 功能描述:1.45-W MONO FILTER-FREE CLASS-D AUDIO POWER AMPLIFIER WITH 1.8-V COMPATIBLE INPUT THRESHOLDS
TPA2006D1DRBR 功能描述:音頻放大器 1.45W Mono Fil-Free Class-D Audio 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
TPA2006D1DRBRG4 功能描述:音頻放大器 1.45W Mono Fil-Free Class-D Audio 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
TPA2006D1DRBT 功能描述:音頻放大器 1.45W Mono Fil-Free Class-D Audio 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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