參數(shù)資料
型號(hào)： TPA032D01DCARG4
廠商： Texas Instruments, Inc.
英文描述： 10-W MONO CLASS-D AUDIO POWER AMPLIFIER
中文描述： 10單聲道D類音頻功率放大器
文件頁(yè)數(shù)： 20/25頁(yè)
文件大?。?/td> 550K
代理商： TPA032D01DCARG4
SLOS282B DECEMBER 1999 REVISED JUNE 2000
20
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
crest factor and thermal considerations (continued)
Table 3. TPA032D01 Power Rating, 12-V, 4-
, Stereo
PEAK OUTPUT POWER
(W)
20
AVERAGE OUTPUT POWER
POWER DISSIPATION
(W/Channel)
2.84
MAXIMUM AMBIENT
TEMPERATURE
87
°
C
113
°
C
125
°
C
125
°
C
125
°
C
125
°
C
10 W (3 dB)
20
5 W (6 dB)
1.66
20
2.5 W (9 dB)
1.12
20
1.25 W (12 dB)
0.87
20
630 mW (15 dB)
0.7
20
315 mW (18 dB)
0.6
The maximum ambient temperature depends on the heatsinking ability of the PCB system. Using the 0 CFM
data from the dissipation rating table, the derating factor for the DCA package with 6.9 in
2
of copper area on
a multilayer PCB is 44.8 mW/
°
C. Converting this to
Θ
JA
:
1
Derating
Θ
JA
1
0.0448
22.3
°
C W
(19)
To calculate maximum ambient temperatures, first consider that the numbers from the dissipation graphs are
per channel so the dissipated heat needs to be doubled for two channel operation. Given
Θ
JA
, the maximum
allowable junction temperature, and the total internal dissipation, the maximum ambient temperature can be
calculated with the following equation. The maximum recommended junction temperature for the TPA032D01
is 150
°
C. The internal dissipation figures are taken from the Efficiency vs Output Power graphs.
T
A
Max
T
J
Max
150
Θ
JA
P
D
22.3(0.35)
125
°
C (15 dB crest factor)
150
22.3(1.42)
118
°
C (3dB crest factor)
(20)
(Maximum recommended case temperature is 125
°
C)
NOTE:
Internal dissipation of 0.7 W is estimated for a 10-W system with a 15 dB crest factor per channel.
The TPA032D01 is designed with thermal protection that turns the device off when the junction temperature
surpasses 150
°
C to prevent damage to the IC. Table 3 was calculated for maximum listening volume without
distortion. When the output level is reduced the numbers in the table change significantly. Also, using 8-
speakers dramatically increases the thermal performance by increasing amplifier efficiency.
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TPA032D01EVM 制造商:Texas Instruments 功能描述:MONO CLASS-D AUDIO POWER AMPLIFIER EVM - Bulk
TPA032D02 制造商:TI 制造商全稱:Texas Instruments 功能描述:10-W STEREO CLASS-D AUDIO POWER AMPLIFIER
TPA032D02_07 制造商:TI 制造商全稱:Texas Instruments 功能描述:10-W STEREO CLASS-D AUDIO POWER AMPLIFIER
TPA032D02DCA 功能描述:音頻放大器 10W Class-D 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
TPA032D02DCAG4 功能描述:音頻放大器 Stereo Medium Power Class-D Audio Amp 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
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