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參數(shù)資料
| 型號： | TAS5182DCA |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 100 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO56 |
| 封裝： | GREEN, PLASTIC, HTSSOP-56 |
| 文件頁數(shù)： | 4/21頁 |
| 文件大?。?/td> | 705K |
| 代理商： | TAS5182DCA |
TAS5182
SLES045E - JUNE 2002 - REVISED MAY 2004
www.ti.com
12
(1) Values taken from Table 6 Thermal Characteristics for Different Package and PCB Configurations of the PowerPAD Thermally Enhanced
Package application note (SLMA002). See pages 32 and 33 for a description of the printed circuit board (PCB) used for these measurements.
Note that the PCB used for these measurements is not the recommended PCB for TAS5182 applications but is cited here for reference only.
Power Dissipation
The equation for TAS5182 power dissipation using N
external MOSFETs is:
Pd = Vgd x Qg x f x N
where:
Vgd = GVDD (typically 12 V)
Qg = MOSFET gate charge
f = operating frequency
N = number of external MOSFETs driven (eight for
two-channel operation)
Example power dissipation calculation:
Given a TAS5182 system with eight external IRFIZ24N
MOSFETs and GVDD = 12 V. The power dissipation is:
Pd = Vgd x Qg x f x N = 12V x 22.5nC x 384 kHz x 8 = 0.8 W
Note: Lab measurements yield a power dissipation of
0.8 W (PVDD = 40 V).
REFERENCES
1.
TAS5000 Digital Audio PWM Process data manual,
Texas Instruments Literature Number SLAS270
2.
System Design Considerations for True Digital Audio
Power
Amplifiers, Texas Instruments Literature
Number SLAA117
3.
Digital Audio Measurements, Texas Instruments
Literature Number SLAA114
4.
PowerPAD Thermally Enhanced Package, Texas
Instruments Literature Number SLMA002
Bottom View DCA
Thermal Pad
Figure 7. Views of a Thermally Enhanced
DCA Package
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相關(guān)代理商/技術(shù)參數(shù) |
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| TAS5182DCAG4 | 功能描述:音頻放大器 Dig Amp Pwr Stage Cntrlr RoHS:否 制造商:STMicroelectronics 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TAS5182DCAR | 功能描述:音頻放大器 Dig Amp Pwr Stage Controller RoHS:否 制造商:STMicroelectronics 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TAS5182DCARG4 | 功能描述:音頻放大器 Dig Amp Pwr Stage Controller RoHS:否 制造商:STMicroelectronics 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TAS5182IDCA | 功能描述:音頻放大器 Dig Amp Pwr Stage Controller RoHS:否 制造商:STMicroelectronics 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TAS5182IDCAG4 | 功能描述:音頻放大器 Dig Amp Pwr Stage Controller RoHS:否 制造商:STMicroelectronics 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
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