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| 型号： | TPA3130D2DAP |
| 厂商： | Texas Instruments |
| 文件页数： | 17/35页 |
| 文件大小： | 0K |
| 描述： | IC AMP AUD PWR 15W STER 32HTSSOP |
| 标准包装： | 46 |
| 系列： | SpeakerGuard™ |
| 类型： | D 类 |
| 输出类型： | 2 通道（立体声） |
| 在某负载时最大输出功率 x 通道数量： | 15W x 2 @ 8 欧姆 |
| 电源电压： | 4.5 V ~ 26 V |
| 特点： | 差分输入，静音，短路和热保护，关机 |
| 安装类型： | 表面贴装 |
| 供应商设备封装： | 32-HTSSOP |
| 封装/外壳： | 32-TSSOP（0.240"，6.10mm 宽）裸露焊盘 |
| 包装： | 管件 |
| 其它名称： | 296-30432-5 |
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OUTP
OUTN
10 H
L1
10 H
L2
C2
C3
0.68 F
OUTP
OUTN
Ferrite
Chip Bead
1 nF
Ferrite
Chip Bead
4
- 8
W
4
- 8
W
SLOS708C – APRIL 2012 – REVISED NOVEMBER 2013
Figure 34.
AM AVOIDANCE EMI REDUCTION
To reduce interference in the AM radio band, the TPA3116D2 has the ability to change the switching frequency
via AM<2:0> pins. The recommended frequencies are listed in Table 6. The fundamental frequency and its
second harmonic straddle the AM radio band listed. This eliminates the tones that can be present due to the
switching frequency being demodulated by the AM radio.
Table 6. AM Frequencies
US
EUROPEAN
AM FREQUENCY (kHz)
SWITCHING FREQUENCY (kHz)
AM2
AM1
AM0
522-540
540-917
540-914
500
0
1
0
1
0
917-1125
914-1122
600 (or 400)
0
1125-1375
1122-1373
500
0
1
0
1
0
1375-1547
1373-1548
600 (or 400)
0
1
0
1547-1700
1548-1701
600 (or 500)
0
1
PRINTED-CIRCUIT BOARD (PCB LAYOUT)
The TPA3116D2 can be used with a small, inexpensive ferrite bead output filter for most applications. However,
since the class-D switching edges are fast, it is necessary to take care when planning the layout of the printed
circuit board. The following suggestions will help to meet EMC requirements.
Decoupling capacitors — The high-frequency decoupling capacitors should be placed as close to the PVCC
and AVCC terminals as possible. Large (100
μF or greater) bulk power supply decoupling capacitors should
be placed near the TPA3116D2 on the PVCC supplies. Local, high-frequency bypass capacitors should be
placed as close to the PVCC pins as possible. These caps can be connected to the IC GND pad directly for
an excellent ground connection. Consider adding a small, good quality low ESR ceramic capacitor between
220 pF and 1 nF and a larger mid-frequency cap of value between 100 nF and 1 F also of good quality to
the PVCC connections at each end of the chip.
Keep the current loop from each of the outputs through the ferrite bead and the small filter cap and back to
GND as small and tight as possible. The size of this current loop determines its effectiveness as an antenna.
Grounding — The PVCC decoupling capacitors should connect to GND. All ground should be connected at
the IC GND, which should be used as a central ground connection or star ground for the TPA3116D2.
24
Copyright 2012–2013, Texas Instruments Incorporated
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TPA3130D2DAPR | 功能描述:音频放大器 15W Filter-Free Cl D Stereo 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 |
| TPA3130D2EVM | 功能描述:音频 IC 开发工具 TPA3130D2 Eval Mod RoHS:否 制造商:Texas Instruments 产品:Evaluation Kits 类型:Audio Amplifiers 工具用于评估:TAS5614L 工作电源电压:12 V to 38 V |
| TPA3131D2 | 制造商:TI 制造商全称:Texas Instruments 功能描述:4W, 25W Filter-Free Class-D Stereo Amplifier with AM Avoidance |
| TPA3131D2EVM | 制造商:Texas Instruments 功能描述:TPA3131D2EVM - Boxed Product (Development Kits) 制造商:Texas Instruments 功能描述:EVAL BOARD FOR TPA3131D2 制造商:Texas Instruments 功能描述:EVAL BOARD, TPA3131D2 AUDIO AMP, Silicon Manufacturer:Texas Instruments, Silicon Core Number:TPA3131D2, Kit Application Type:Amplifier, Application Sub Type:Audio Power Amplifier - Class D, Kit Contents:Board, Guide 制造商:Texas Instruments 功能描述:, Silicon Manufacturer:Texas Instruments, Silicon Core Number:TPA3131D2, Kit App |
| TPA3131D2RHBR | 制造商:Texas Instruments 功能描述:TPA3118 IN RHB PACKAGE |
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