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| 型號： | TPA2100P1YZHR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 1 CHANNEL, AUDIO AMPLIFIER, PBGA16 |
| 封裝： | 2.10 X 2.10 MM, GREEN, WCSP-16 |
| 文件頁數(shù)： | 2/23頁 |
| 文件大?。?/td> | 963K |
| 代理商： | TPA2100P1YZHR |
RESISTOR – SPEAKER – RESISTOR LOAD CONFIGURATION
Vdd SW
IN-
IN+
GND
OUT +
OUT -
VccOUT
VccIN
C IN
SD
SDa
GAIN
Digital
BaseBand
Analog
Baseband
or
CODEC
VIN
2 .5 Vto
5.5 V
Vref
BST
10nF
10 F
m
10 F
m
1 F
m
4.7 H
m
5~10 W
1 F
m
0.1~2 F
m
R
AUDMAX
SPK
1
=
2
R
C
f
p
(1)
OUTPEAK
CLASSDPEAK
2
V
I
=
R
+ XC
(2)
AUDMAX
SPK
1
XC =
2
f
C
p
(3)
RESISTOR – SPEAKER – INDUCTOR LOAD CONFIGURATION
SLOS595 – DECEMBER 2008 ........................................................................................................................................................................................... www.ti.com
This is the simplest configuration. However, this type of load configuration does not achieve the best efficiency
possible. Thus, it is recommended to use the resistor – speaker – inductor load configuration. The following
figure shows an example of the resistor – speaker – resistor configuration.
Figure 15. Application Schematic with Resistor – Speaker – Resistor Load Configuration
For the RC load configuration, only two calculations are required. Note that R in Equation 1 is the sum of the two
output resistors in Figure 15.
The highest desired audio frequency will be limited by the RC low-pass filter configuration of the load:
Peak Output Current from the Class-D Amplifier should therefore be limited to the maximum audio frequency:
Where XC is:
To calculate the proper boost converter inductor required for this application, see the Inductor Selection section.
Note that an input low-pass filter should be added before the audio amplifier in order to limit the audio frequency,
fAUDMAX.
The second configuration with a resistor – speaker – inductor load is the most efficient configuration and is the
preferred solution. Figure 16 shows an example of this configuration.
10
Copyright 2008, Texas Instruments Incorporated
Product Folder Link(s): TPA2100P1
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPA2100P1YZHT | 功能描述:音頻放大器 19Vpp Mono Class D Audio Amplifier 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 |
| TPA2100P1YZHT | 制造商:Texas Instruments 功能描述:Audio Power Amplifier IC |
| TPA21CCGPC0 | 制造商:TE Connectivity 功能描述:Switch Push Button N.O. DPST Round Plunger 20VAC 20VDC 0.4VA Momentary Contact PC Pins Thru-Hole Loose Piece |
| TPA21CCGRA0 | 功能描述:按鈕開關(guān) SWITCH PB 2XSPST MOM RND BLK RoHS:否 制造商:C&K Components 觸點(diǎn)形式:2 NC - 2 NO 開關(guān)功能:ON ? OFF 電流額定值:4 A 電壓額定值 AC:12 V to 250 V 電壓額定值 DC:12 V to 50 V 功率額定值: 安裝風(fēng)格:Through Hole 照明:Illuminated 照明顏色:None IP 等級:IP 40 端接類型:Solder 觸點(diǎn)電鍍:Silver 執(zhí)行器:Square 蓋顏色: 封裝: 可燃性等級:UL 94 V-0 |
| TPA21CCGRA004 | 功能描述:按鈕開關(guān) FLUSHBUTTON RoHS:否 制造商:C&K Components 觸點(diǎn)形式:2 NC - 2 NO 開關(guān)功能:ON ? OFF 電流額定值:4 A 電壓額定值 AC:12 V to 250 V 電壓額定值 DC:12 V to 50 V 功率額定值: 安裝風(fēng)格:Through Hole 照明:Illuminated 照明顏色:None IP 等級:IP 40 端接類型:Solder 觸點(diǎn)電鍍:Silver 執(zhí)行器:Square 蓋顏色: 封裝: 可燃性等級:UL 94 V-0 |
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