- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄385010 > TPA2010D1YZF (Texas Instruments, Inc.) 2.5-W MONO FILTER-FREE CLASS-D AUDIO POWER AMPLIFIER PDF資料下載
參數(shù)資料
| 型號(hào)： | TPA2010D1YZF |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 2.5-W MONO FILTER-FREE CLASS-D AUDIO POWER AMPLIFIER |
| 中文描述： | 2.5單聲道無濾波器D類音頻功率放大器 |
| 文件頁數(shù)： | 19/23頁 |
| 文件大小： | 415K |
| 代理商： | TPA2010D1YZF |
SLOS417A OCTOBER 2003 REVISED DECEMBER 2003
www.ti.com
19
Effects of Applying a Square Wave Into a Speaker
If the amplitude of a square wave is high enough and the frequency of the square wave is within the bandwidth
of the speaker, a square wave could cause the voice coil to jump out of the air gap and/or scar the voice coil.
A 250-kHz switching frequency, however, is not significant because the speaker cone movement is proportional
to 1/f
2
for frequencies beyond the audio band. Therefore, the amount of cone movement at the switching
frequency is very small. However, damage could occur to the speaker if the voice coil is not designed to handle
the additional power. To size the speaker for added power, the ripple current dissipated in the load needs to
be calculated by subtracting the theoretical supplied power, P
SUP THEORETICAL
, from the actual supply power,
P
SUP
, at maximum output power, P
OUT
. The switching power dissipated in the speaker is the inverse of the
measured efficiency,
η
MEASURED
, minus the theoretical efficiency,
η
THEORETICAL
.
PSPKR
PSUP–PSUP THEORETICAL(at max output power)
PSPKR
PSUP
POUT
–
PSUP THEORETICAL
POUT
(at max output power)
PSPKR
POUT
1
MEASURED
1
THEORETICAL
(at max output power)
THEORETICAL
RL
2rDS(on)
RL
(at max output power)
The maximum efficiency of the TPA2010D1 with a 3.6 V supply and an 8-
load is 86% from equation (20).
Using equation (19) with the efficiency at maximum power (84%), we see that there is an additional 17 mW
dissipated in the speaker. The added power dissipated in the speaker is not an issue as long as it is taken into
account when choosing the speaker.
(17)
(18)
(19)
(20)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TPA4411YZH | Filter Module with Resistor Network |
| TPA4411RTJ | 80-mW CAPLESS STEREO HEADPHONE DRIVER |
| TPA751GQS | 700-mW MONO LOW-VOLTAGE AUDIO POWER AMPLIFIER WITH DIFFERENTIAL INPUTS |
| TPA751GQSR | Amplifier. Other |
| TPC-1260 | Intel㈢ Pentium㈢ M/Celeron㈢ M Touch Panel Computer with 12.1 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPA2010D1YZFR | 功能描述:音頻放大器 Mono Filter-Free Class-D in WCSP 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 |
| TPA2010D1YZFRG4 | 制造商:TI 功能描述:AUDIO POWER AMPLIFIER |
| TPA2010D1YZFT | 功能描述:音頻放大器 Mono Filter-Free Class-D in WCSP 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 |
| TPA2011D1 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:3.2W Mono Filter-Free Class-D Audio Power Amplifier With Auto-Recovering Short-Circuit Protection |
| TPA2011D1_12 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:3.2W Mono Filter-Free Class-D Audio Power Amplifier |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。