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参数资料
| 型号： | TS4956EIKJT |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 1.055 W, 2 CHANNEL, AUDIO AMPLIFIER, PBGA18 |
| 封装： | ROHS COMPLIANT, FCP-18 |
| 文件页数： | 33/52页 |
| 文件大小： | 1709K |
| 代理商： | TS4956EIKJT |
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TS4956
Application information
39/51
The efficiency is the ratio between the output power and the power supply:
The maximum theoretical value is reached when VPEAK = VCC/2, so
The TS4956 has in modes 3 and 4 two active output power amplifiers. Each amplifier
produces heat due to its power dissipation. Therefore the maximum die temperature is the
sum of each amplifier’s maximum power dissipation. It is calculated as follows:
Pdiss 1 = power dissipation due to the first power amplifier.
Pdiss 2 = power dissipation due to the second power amplifier.
Total Pdiss =Pdiss 1 +Pdiss 2 (W)
In most cases,
Pdiss 1 =Pdiss 2, giving:
4.3.3
BTL output configuration (modes 1, 2, 7):
The average current delivered by the supply voltage is:
Figure 128. Current delivered by supply voltage in the BTL output configuration
The power delivered by supply voltage is:
Then, the power dissipation by each amplifier is
η
P
out
P
su pply
-------------------
πV
PEAK
4V
CC
---------------------
==
η
π
8
---
39.25%
==
TotalP
diss
2P
diss1
=
TotalP
diss
42VCC
π R
L
---------------------- P
out
2P
ou t W
()
–
=
Icc
AVG
1
π
---
V
PEAK
R
L
-----------------
t
()
sin
t
d
0
π
∫
2V
PEAK
πR
L
---------------------A
()
==
P
sup ply
V
CCICC
AV G
W
()
=
P
diss
22 VCC
π R
L
---------------------- P
ou t
P
out W
()
–
=
相关PDF资料 |
PDF描述 |
|---|---|
| TS4956EKIJT | 1.06 W, 2 CHANNEL, AUDIO AMPLIFIER, PBGA18 |
| TS4961TIQT | 1.5 W, 1 CHANNEL, AUDIO AMPLIFIER, QCC16 |
| TS4962EIJT | 3 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA9 |
| TS4962EIKJT | 3 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA9 |
| TS4962EKIJT | 3 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA9 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TS4961TIQT | 功能描述:音频放大器 MONO CLASS D AUDIO PWR AMP RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TS4962 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:2.8W filter-free mono class D audio power amplifier |
| TS4962_07 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:2.8W filter-free mono class D audio power amplifier |
| TS4962_10 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:2.8 W filter-free mono class D audio power amplifier |
| TS4962EIJT | 制造商:STMicroelectronics 功能描述:AUD AMP SPKR 1CH MONO 2W CLS-D 9PIN FLIP-CHIP - Tape and Reel |
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