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參數(shù)資料
型號： TPA3121D2PWPRG4
廠商： TEXAS INSTRUMENTS INC
元件分類： 音頻／視頻放大
英文描述： AUDIO AMPLIFIER, PDSO24
封裝： PLASTIC, HTSSOP-24
文件頁數(shù)： 8/29頁
文件大小： 860K
代理商： TPA3121D2PWPRG4
100
90
80
70
60
50
40
30
20
10
0
f Frequency Hz
Power
Supply
Rejection
Ratio
dB
G026
20
100
1k
10k
20k
VCC = 24 V
VO(ripple) = 0.2 VPP
RL = 8 (SE)
Gain = 20 dB
100
90
80
70
60
50
40
30
20
10
0
f Frequency Hz
Power
Supply
Rejection
Ratio
dB
G027
20
100
1k
10k
20k
VCC = 24 V
VO(ripple) = 0.2 VPP
RL = 8 (SE)
Gain = 20 dB
VCC
MUTE
SHUTDOWN
C
6
1
.0
F
m
R7
C12
0.22
F
m
0
.2
2
F
m
C19
+
1
2
TPA3121D2
PVCCL1
1
SDZ
2
PVCCL2
3
MUTE
4
LIN
5
RIN
6
BYP
7
GND1
8
GND2
9
PVCCR1
10
VCLAMP
11
PVCCR2
12
PVSSR2
13
PVSSR1
14
OUTR
15
BSR
16
GAIN1
17
GAIN0
18
AVCC2
19
AVCC1
20
BSL
21
OUTL
22
PVSSL2
23
PVSSL1
24
T
H
E
R
M
A
L
2
5
R6
C
1
3
2
0
F
m
220 W
R8
C7
0.1
F
m
C8
4
7
0
F
m
+
1
2
C
1
4
0
.1
F
m
0
.2
2
F
m
C20
4
.7
5k
W
4
.7
5k
W
+
1
2
C15
0.22
F
m
C2
4
7
0
F
m
+
1
2
0.1
F
m
C1
C
5
1
.0
F
m
C3
1.0
F
m
C4
1.0
F
m
L1
33
F
m
L2
33
F
m
C17
470
F
m
C10
470
F
m
BSN and BSP Capacitors
SLOS537 – MAY 2008........................................................................................................................................................................................................ www.ti.com
Figure 29. PSRR Without AVCC Filter
Figure 30. PSRR With AVCC Filter
Figure 31. Application Schematic with 220-
/220-
F AVCC Filter
The half H-bridge output stages use only NMOS transistors. Therefore, they require bootstrap capacitors for the
high side of each output to turn on correctly. A 220-nF ceramic capacitor, rated for at least 25 V, must be
connected from each output to its corresponding bootstrap input. Specifically, one 220-nF capacitor must be
connected from LOUT to BSL, and one 220-nF capacitor must be connected from ROUT to BSR.
The bootstrap capacitors connected between the BSx pins and their corresponding outputs function as a floating
power supply for the high-side N-channel power MOSFET gate-drive circuitry. During each high-side switching
cycle, the bootstrap capacitors hold the gate-to-source voltage high enough to keep the high-side MOSFETs
turned on.
16
Copyright 2008, Texas Instruments Incorporated
Product Folder Link(s): TPA3121D2
相關PDF資料
PDF描述
TPA3121D2PWP AUDIO AMPLIFIER, PDSO24
TPA3121D2PWPR AUDIO AMPLIFIER, PDSO24
TPA3122D2N 15 W, 2 CHANNEL, AUDIO AMPLIFIER, PDIP20
TPA3123D2PWPG4 25 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO24
TPA3123D2PWPRG4 25 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO24
相關代理商/技術參數(shù)
參數(shù)描述
TPA3122D2 制造商:TI 制造商全稱:Texas Instruments 功能描述:15-W STEREO CLASS-D AUDIO POWER AMPLIFIER
TPA3122D2EVM 功能描述:音頻 IC 開發(fā)工具 TPA3122D2EVM Eval Mod RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V
TPA3122D2N 功能描述:音頻放大器 15W STEREO CLASS-D AUDIO POWER 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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
TPA3123D2 制造商:TI 制造商全稱:Texas Instruments 功能描述:25-W STEREO CLASS-D AUDIO POWER AMPLIFIER
TPA3123D2EVM 功能描述:音頻 IC 開發(fā)工具 TPA3123D2EVM Eval Mod RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V
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