The TPA3156D2 has low idle power loss and helps to extend the battery life of Bluetooth/Wireless speakers and other battery-powered audio systems. The high efficiency of the TPA3156D2 device allows it to do 2 × 70 W with external heat sink on a dual layer PCB. This device integrates an efficiency boost mode, which dynamically reduces the current ripple of the external LC filter and the idle current .

The TPA3156D2 advanced oscillator/PLL circuit employs a multiple switching frequency option to avoid AM interferences, which is achieved together with an option of either master or slave option, making it possible to synchronize multiple devices.

The TPA3156D2 devices are fully protected against faults with short-circuit protection and thermal protection as well as overvoltage, undervoltage, and DC protection. Faults are reported back to the processor to prevent devices from being damaged during overload conditions.

• 2 × 70 W Into a 4-Ω BTL Load at 24 V
• Wide Voltage Range: 4.5 V to 26 V
• Efficient Class-D Operation
  • Very Low Idle Current: <23 mA for recommended LC filter configurations
  • Greater than 90% Power Efficiency
  • Adaptive Modulation Schemes based on Output Power
• Multiple Switching Frequencies
  • AM Avoidance
  • Master and Slave Synchronization
  • 300-KHz to 1.2-MHz Switching Frequency
• Feedback Power-Stage Architecture With High PSRR Reduces PSU Requirements
• Programmable Power Limit
• Parallel BTL Mode and Mono-Channel Mode Support
• Supports Both Single and Dual Power Supply Modes
• Integrated Self-Protection Circuits Including Overvoltage, Undervoltage, Overtemperature, DC-Detect, and Short Circuit With Error Reporting
• Thermally Enhanced Packages
  • DAD (32-Pin HTSSOP Pad Up)
• Pin to Pin Compatible with TPA3116D2 and TPA3126D2

• Audio input type
• Analog Input
• Architecture
• Class-D
• Speaker channels (Max)
• Stereo
• Power stage supply (Max) (V)
• 26
• Power stage supply (Min) (V)
• 4.5
• Load (Min) (ohms)
• 2
• Output power (W)
• 70
• SNR (dB)
• 102
• THD + N @ 1 kHz (%)
• 0.1
• Iq (Typ) (mA)
• 17
• Control interface
• Hardware
• Closed/open loop
• Closed
• Analog supply (Min) (V)
• 4.5
• Analog supply (Max) (V)
• 26
• PSRR (dB)
• 70
• Operating temperature range (C)
• -40 to 85

TPA3156D2的完整型号有：TPA3156D2DAD、TPA3156D2DADR，以下是这些产品的关键参数及官网采购报价：

TPA3156D2DAD，工作温度：-40 to 85，封装：HTSSOP (DAD)-32，包装数量MPQ：46个，MSL 等级/回流焊峰值温度：Level-3-260C-168 HR，引脚镀层/焊球材料：NIPDAU，TI官网TPA3156D2DAD的批量USD价格：2.046（1000+）

TPA3156D2DADR，工作温度：-40 to 85，封装：HTSSOP (DAD)-32，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-3-260C-168 HR，引脚镀层/焊球材料：NIPDAU，TI官网TPA3156D2DADR的批量USD价格：1.705（1000+）

TPA3156D2EVM — TPA3156D2 无电感器 70W 立体声 (BTL) D 类音频放大器评估模块

TPA3156D2EVM 支持对 TPA3156D2 进行评估。这是一款高效的 D 类音频功率放大器，用于驱动每通道功率为 70W 的 2 个桥接式立体声扬声器。

TPA3156D2 TINA-TI Spice Model

PSpice for TI 可提供帮助评估模拟电路功能的设计和仿真环境。此功能齐全的设计和仿真套件使用 Cadence 的模拟分析引擎。PSpice for TI 可免费使用，包括业内超大的模型库之一，涵盖我们的模拟和电源产品系列以及精选的模拟行为模型。

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