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TPA3112D1

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支持无滤波器操作、带有 SpeakerGuard™ 的 25W 单声道、8V 至 26V 电源电压、模拟输入 D 级音频放大器

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TPA3112D1

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产品详情

Audio input type Analog Input Architecture Class-D Speaker channels (max) Mono Rating Catalog Power stage supply (max) (V) 26 Power stage supply (min) (V) 8 Load (min) (Ω) 4 Output power (W) 25 SNR (dB) 102 THD + N at 1 kHz (%) 0.05 Iq (typ) (mA) 10 Control interface Hardware Closed/open loop Closed Analog supply (min) (V) 8 Analog supply voltage (max) (V) 26 PSRR (dB) 70 Operating temperature range (°C) -40 to 85
Audio input type Analog Input Architecture Class-D Speaker channels (max) Mono Rating Catalog Power stage supply (max) (V) 26 Power stage supply (min) (V) 8 Load (min) (Ω) 4 Output power (W) 25 SNR (dB) 102 THD + N at 1 kHz (%) 0.05 Iq (typ) (mA) 10 Control interface Hardware Closed/open loop Closed Analog supply (min) (V) 8 Analog supply voltage (max) (V) 26 PSRR (dB) 70 Operating temperature range (°C) -40 to 85
HTSSOP (PWP) 28 62.08 mm² 9.7 x 6.4
  • 25-W into an 8-Ω Load at < 0.1% THD+N From a 24-V Supply
  • 20-W into an 4-Ω Load at 10% THD+N From a 12-V Supply
  • 94% Efficient Class-D Operation into 8-Ω Load Eliminates Need for Heat Sinks
  • Wide Supply Voltage Range Allows Operation from 8 to 26 V
  • Filter-Free Operation
  • SpeakerGuard™ Speaker Protection Includes Adjustable Power Limiter plus DC Protection
  • Flow Through Pin Out Facilitates Easy Board Layout
  • Robust Pin-to-Pin Short Circuit Protection and Thermal Protection with Auto-Recovery Option
  • Excellent THD+N/ Pop Free Performance
  • Four Selectable, Fixed Gain Settings
  • Differential Inputs
  • 25-W into an 8-Ω Load at < 0.1% THD+N From a 24-V Supply
  • 20-W into an 4-Ω Load at 10% THD+N From a 12-V Supply
  • 94% Efficient Class-D Operation into 8-Ω Load Eliminates Need for Heat Sinks
  • Wide Supply Voltage Range Allows Operation from 8 to 26 V
  • Filter-Free Operation
  • SpeakerGuard™ Speaker Protection Includes Adjustable Power Limiter plus DC Protection
  • Flow Through Pin Out Facilitates Easy Board Layout
  • Robust Pin-to-Pin Short Circuit Protection and Thermal Protection with Auto-Recovery Option
  • Excellent THD+N/ Pop Free Performance
  • Four Selectable, Fixed Gain Settings
  • Differential Inputs

The TPA3112D1 is a 25-W efficient, Class-D audio power amplifier for driving a bridge tied speaker. Advanced EMI Suppression Technology enables the use of inexpensive ferrite bead filters at the outputs while meeting EMC requirements. SpeakerGuard speaker protection system includes an adjustable power limiter and a DC detection circuit. The adjustable power limiter allows the user to set a voltage rail lower than the chip supply to limit the amount of current through the speaker. The DC detect circuit measures the frequency and amplitude of the PWM signal and shuts off the output stage if the input capacitors are damaged or shorts exist on the inputs.

The TPA3112D1 can drive a mono speaker as low as 4Ω. The high efficiency of the TPA3112D1, > 90%, eliminates the need for an external heat sink when playing music.

The outputs are fully protected against shorts to GND, VCC, and output-to-output. The short-circuit protection and thermal protection includes an auto-recovery feature.

The TPA3112D1 is a 25-W efficient, Class-D audio power amplifier for driving a bridge tied speaker. Advanced EMI Suppression Technology enables the use of inexpensive ferrite bead filters at the outputs while meeting EMC requirements. SpeakerGuard speaker protection system includes an adjustable power limiter and a DC detection circuit. The adjustable power limiter allows the user to set a voltage rail lower than the chip supply to limit the amount of current through the speaker. The DC detect circuit measures the frequency and amplitude of the PWM signal and shuts off the output stage if the input capacitors are damaged or shorts exist on the inputs.

The TPA3112D1 can drive a mono speaker as low as 4Ω. The high efficiency of the TPA3112D1, > 90%, eliminates the need for an external heat sink when playing music.

The outputs are fully protected against shorts to GND, VCC, and output-to-output. The short-circuit protection and thermal protection includes an auto-recovery feature.
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类型 标题 下载最新的英语版本 日期
* 数据表 TPA3112D1 25-W Filter-Free Mono Class-D Audio Power Amplifier With SpeakerGuard™ 数据表 (Rev. D) PDF | HTML 2016年 12月 7日
应用手册 Using Thermal Calculation Tools for Analog Components (Rev. A) 2019年 8月 30日
应用手册 Guidelines for Measuring Audio Power Amplifier Performance (Rev. A) 2019年 8月 26日
应用手册 AN-1849 An Audio Amplifier Power Supply Design (Rev. C) 2019年 6月 27日
应用手册 AN-1737 Managing EMI in Class D Audio Applications (Rev. A) 2013年 5月 1日
EVM 用户指南 TPA3112D1 Audio Amplifier Evaluation Module User's Guide (Rev. A) 2010年 7月 8日

设计和开发

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评估板

TPA3112D1EVM — TPA3112D1 评估模块

TPA3112D1 评估模块包含一个 25W D 类单声道音频功率放大器和安装在电路板上的少量外部组件，它可用于直接驱动扬声器，这是借助用作输入的外部模拟音频源实现的。该 EVM 的默认输出滤波器配置是 LC 滤波器，但是也可轻松地配置为支持无滤波器操作。

设计人员可以使用 TPA3112D1EVM 快速评估声音质量并验证其应用的规范性。另外，TPA3112D1EVM 用户指南还包含用作参考设计的原理图、布局和物料清单。

用户指南: PDF
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仿真模型

TPA3112D1 TINA-TI Reference Design

SLAM056.TSC (29 KB) - TINA-TI Reference Design
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仿真模型

TPA3112D1 TINA-TI Spice Model

SLAM057.ZIP (21 KB) - TINA-TI Spice Model
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模拟工具

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订购和质量

包含信息：
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息：
  • 制造厂地点
  • 封装厂地点

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