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参数资料
| 型号： | TAS5182IDCAR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 100 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO56 |
| 封装： | GREEN, PLASTIC, HTSSOP-56 |
| 文件页数： | 4/21页 |
| 文件大小： | 705K |
| 代理商： | TAS5182IDCAR |
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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相关代理商/技术参数 |
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| TAS5182IDCARG4 | 功能描述:音频放大器 Dig Amp Pwr Stage Controller RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
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| TAS5186A | 制造商:TI 制造商全称:Texas Instruments 功能描述:6-Channel, 210-W, Digital-Amplifier Power Stage |
| TAS5186ADDV | 功能描述:音频放大器 6-Ch 210-W Digital PowerStage RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TAS5186ADDV | 制造商:Texas Instruments 功能描述:Audio Power Amplifier IC |
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