- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄385010 > TPA032D04DCAR (Texas Instruments, Inc.) Dual Audio Amplifier PDF資料下載
參數(shù)資料
| 型號： | TPA032D04DCAR |
| 廠商： | Texas Instruments, Inc. |
| 元件分類： | 運(yùn)動控制電子 |
| 英文描述： | Dual Audio Amplifier |
| 中文描述： | 雙音頻放大器 |
| 文件頁數(shù)： | 16/24頁 |
| 文件大小： | 350K |
| 代理商： | TPA032D04DCAR |
TPA032D04
10-W STEREO CLASS-D AUDIO POWER AMPLIFIER
SLOS203A – DECEMBER 1999 – REVISED MARCH 2000
16
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
the ideal class-D amplifier (continued)
Given these plots, the efficiency of the class-D device can be calculated and compared to an ideal linear
amplifier device. In the derivation below, a sine wave of peak voltage (V
P
) is the output from an ideal class-D
and linear amplifier and the efficiency is calculated.
V
L(rms)
V
P
2
CLASS-D
LINEAR
V
L(rms)
V
P
2
P
L
V
L
I
L
Average I
DD
I
L(rms)
V
L(rms)
V
DD
P
L
V
L(rms)
R
L
2
V
P
2
2 R
L
Average I
DD
2
V
P
R
L
P
SUP
V
DD
Average I
DD
P
SUP
V
DD
Average I
DD
V
DD
V
P
R
L
2
P
SUP
V
DD
I
L(rms)
V
DD
V
L(rms)
Efficiency
P
L
P
SUP
Efficiency
P
L
P
SUP
Efficiency
V
DD
V
P2
2R
L
2
V
P
R
L
Efficiency
1
Efficiency
4
VP
VDD
In the ideal efficiency equations, assume that V
P
= V
DD
, which is the maximum sine wave magnitude without
clipping. Then, the highest efficiency that a linear amplifier can have without clipping is 78.5%. A class-D
amplifier, however, can ideally have an efficiency of 100% at all power levels.
The derivation above applies to an H-bridge as well as a half-bridge. An H-bridge requires approximately twice
the supply current but only requires half the supply voltage to achieve the same output power—factors that
cancel in the efficiency calculation. The H-bridge circuit is shown in Figure 8.
VDD
VOUT
L
CL
RL
IL
IOUT
+
–
VA
M2
M1
VDD
L
CL
M4
M3
Figure 8. H-Bridge Class-D Output Stage
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TPA2010D1YEF | 2.5-W MONO FILTER-FREE CLASS-D AUDIO POWER AMPLIFIER |
| TPA2010D1YZF | 2.5-W MONO FILTER-FREE CLASS-D AUDIO POWER AMPLIFIER |
| 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 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPA032D04DCARG4 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:10-W STEREO CLASS-D AUDIO POWER AMPLIFIER |
| TPA032D04EVM | 制造商:Texas Instruments 功能描述:EVAL KIT FOR 10-W STEREO CLS-D AUD PWR AMP - Bulk |
| TPA-10 | 功能描述:保險(xiǎn)絲 TELPOWER ALARM FUSE RoHS:否 制造商:Littelfuse 產(chǎn)品:Surface Mount Fuses 電流額定值:0.5 A 電壓額定值:600 V 保險(xiǎn)絲類型:Fast Acting 保險(xiǎn)絲大小/組:Nano 尺寸:12.1 mm L x 4.5 mm W 安裝風(fēng)格: 端接類型:SMD/SMT 系列:485 |
| TPA100 | 功能描述:TVS 二極管 - 瞬態(tài)電壓抑制器 100V 50uA Bidirect RoHS:否 制造商:Vishay Semiconductors 極性:Bidirectional 工作電壓: 擊穿電壓:58.9 V 鉗位電壓:77.4 V 峰值浪涌電流:38.8 A 系列: 封裝 / 箱體:DO-214AB 最小工作溫度:- 55 C 最大工作溫度:+ 150 C |
| TPA100RL | 功能描述:TVS 二極管 - 瞬態(tài)電壓抑制器 100V 50uA Bidirect RoHS:否 制造商:Vishay Semiconductors 極性:Bidirectional 工作電壓: 擊穿電壓:58.9 V 鉗位電壓:77.4 V 峰值浪涌電流:38.8 A 系列: 封裝 / 箱體:DO-214AB 最小工作溫度:- 55 C 最大工作溫度:+ 150 C |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。