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參數(shù)資料
| 型號： | TPA2013D1_1 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 2.7-W CONSTANT OUTPUT POWER CLASS-D AUDIO AMPLIFIER WITH INTEGRATED BOOST CONVERTER |
| 中文描述： | 2.7鎢恒定輸出功率D類音頻放大器，具有集成升壓轉換器 |
| 文件頁數(shù)： | 15/30頁 |
| 文件大?。?/td> | 900K |
| 代理商： | TPA2013D1_1 |
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CAPACITOR SELECTION
TPA2013D1
SLOS520–AUGUST 2007
SURFACE MOUNT CAPACITORS
Temperature and applied dc voltage influence the actual capacitance of high-K materials.
Table 3
shows the relationship between the different types of high-K materials and their associated tolerances,
temperature coefficients, and temperature ranges. Notice that a capacitor made with X5R material can lose up to
15% of its capacitance within its working temperature range.
High-K material is very sensitive to applied dc voltage. X5R capacitors can have losses ranging from 15 to 45%
of their initial capacitance with only half of their dc rated voltage applied. For example, if 5 Vdc is applied to a 10
V, 1
μ
F X5R capacitor, the measured capacitance at that point may show 0.85
μ
F, 0.55
μ
F, or somewhere in
between. Y5V capacitors have losses that can reach or exceed 50% to 75% of their rated value.
In an application, the working capacitance of components made with high-K materials is generally much lower
than nominal capacitance. A worst case result with a typical X5R material might be –10% tolerance, –15%
temperature effect, and –45% dc voltage effect at 50% of the rated voltage. This particular case would result in a
working capacitance of 42% (0.9
×
0.85
×
0.55) of the nominal value.
Select high-K ceramic capacitors according to the following rules:
1. Use capacitors made of materials with temperature coefficients of X5R, X7R, or better.
2. Use capacitors with dc voltage ratings of at least twice the application voltage. Use minimum 10 V capacitors
for the TPA2013D1.
3. Choose a capacitance value at least twice the nominal value calculated for the application. Multiply the
nominal value by a factor of 2 for safety. If a 10
μ
F capacitor is required, use 20
μ
F.
The preceding rules and recommendations apply to capacitors used in connection with the TPA2013D1. The
TPA2013D1 cannot meet its performance specifications if the rules and recommendations are not followed.
Table 3. Typical tolerance and temperature coefficient of capacitance by material
Material
COG/NPO
±5%
±30ppm
–55/125
°
C
X7R
±10%
±15%
–55/125
°
C
X5R
Typical Tolerance
Temperature Coefficient
Temperature Range,
°
C
80/–20%
22/–82%
-30/85
°
C
Copyright 2007, Texas Instruments Incorporated
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TPA2013D1
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| TPA2013D1EVM | 功能描述:音頻 IC 開發(fā)工具 TPA2013D1EVM Eval Mod RoHS:否 制造商:Texas Instruments 產品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V |
| TPA2013D1RGP | 制造商:TI 制造商全稱:Texas Instruments 功能描述:2.7-W CONSTANT OUTPUT POWER CLASS-D AUDIO AMPLIFIER WITH INTEGRATED BOOST CONVERTER |
| TPA2013D1RGPR | 功能描述:音頻放大器 2.7W Constant Output Pwr Mono Class-D 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 |
| TPA2013D1RGPRG4 | 功能描述:音頻放大器 2.7W Constant Output Pwr Mono Class-D 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 |
| TPA2013D1RGPT | 制造商:Texas Instruments 功能描述:AUD AMP SPKR 1CH MONO 2.7W CLS-D 20QFN - Tape and Reel |
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