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參數(shù)資料
| 型號： | TA2021B |
| 廠商： | Electronic Theatre Controls, Inc. |
| 元件分類： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | STEREO 25W (4OHM) CLASS-T DIGITAL AUDIO AMPLIFIER DRIVER USING DIGITAL POWER PROCESSING (DPP) TECHNOLOGY |
| 中文描述： | 立體聲25瓦（4Ω）類- T的數(shù)字音頻放大器驅(qū)動(dòng)程序使用數(shù)字功率處理（民進(jìn)黨）科技 |
| 文件頁數(shù)： | 8/12頁 |
| 文件大小： | 268K |
| 代理商： | TA2021B |
Tripath Technology, Inc. - Technical Information
8
TA2021B – 3.0/04.03
Application Information
Circuit Board Layout
The TA2021B is a power amplifier which operates at relatively high switching frequencies. The
outputs of the amplifier switch between VDD and PGND at frequencies as high as 1MHz while
driving high currents. This high-frequency digital signal is passed through an LC low-pass filter to
recover the amplified audio signal. Because the TA2021B drives the inductive LC output filters
and speaker load, the amplifier outputs can be pulled above VDD and below PGND by the stored
energy in the output inductance. To avoid subjecting the TA2021B to potentially damaging
voltage stress, it is critical to have a good printed circuit board layout to minimize parasitic effects
caused by excessive trace inductance/capacitance. It is recommended that Tripath’s layout and
application circuit be used as closely as possible for all applications and only be deviated from
after careful analysis of the effects of any changes.
Output Stage layout Considerations and Component Selection Criteria
Proper PCB layout and component selection is a major step in designing a reliable TA2021B
power amplifier. The supply pins require proper decoupling with correctly chosen components to
achieve optimal reliability. The output pins need proper protection to keep the outputs from going
below ground and above VDD.
The above layout shows component placement and routing for channel 1 (the same design
criteria applies to channel 2). This shows that C3, a 0.1uF surface mount 0805 capacitor, should
be the first component placed and must decouple VDD1 (pins 29 and 30) directly to PGND1
(pin35). C2, a low ESR, electrolytic capacitor, should also decouple VDD1 directly to PGND1.
Both C2 and C3 may decouple VDD1 to a ground plane, but it is critical that the return path to the
PGND1 pin of the TA2021B, whether it is a ground plane or a trace, be a short and direct low
impedance path. Effectively decoupling VDD will shunt any power supply trace length inductance.
The diodes and inductors shown are for channel 1’s outputs. D1, D3, and L2 connect to the
OUTP1 pin and D2, D4, and L3 connect to the OUTM1 pin of the TA2021B. Each output must
have Schottky or Ultra Fast Recovery diodes placed near the TA2021B, preferably immediately
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| TA2022 | 制造商:TRIPATH 制造商全稱:TRIPATH 功能描述:STEREO 90W (4з) CLASS-T⑩ DIGITAL AUDIO AMPLIFIER DRIVER USING DIGITAL POWER PROCESSING (DPP⑩) TECHNOLOGY |
| TA202216 | 制造商:POWEREX 制造商全稱:Powerex Power Semiconductors 功能描述:Phase Control SCR (1600-1800 Amperes Avg 100-2200 Volts) |
| TA20221603DH | 功能描述:SCR PHASE CTRL 2200V 1600A RoHS:是 類別:半導(dǎo)體模塊 >> SCR 系列:- 其它有關(guān)文件:SCR Module Selection Guide 標(biāo)準(zhǔn)包裝:10 系列:- 結(jié)構(gòu):串聯(lián) - SCR/二極管 SCR 數(shù)目，二極管:1 SCR，1 個(gè)二極管 電壓 - 斷路:1600V 電流 - 柵極觸發(fā)電流 (Igt)（最大）:150mA 電流 - 導(dǎo)通狀態(tài) (It (AV))（最大）:95A 電流 - 導(dǎo)通狀態(tài) (It (RMS))（最大）:210A 電流 - 非重復(fù)電涌，50、60Hz (Itsm):1785A，1870A 電流 - 維持(Ih):250mA 安裝類型:底座安裝 封裝/外殼:ADD-A-PAK（3 + 2） 包裝:散裝 其它名稱:*IRKL92/16AIRKL92/16IRKL92/16-ND |
| TA20221603DN | 制造商:n/a 功能描述:Power Semiconductor |
| TA202218 | 制造商:POWEREX 制造商全稱:Powerex Power Semiconductors 功能描述:Phase Control SCR (1600-1800 Amperes Avg 100-2200 Volts) |
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