The TPA3128D2 devices are stereo efficient, digital amplifier power stage for driving speakers up to 60 W / 2 Ω in PBTL mode. The TPA3128D2 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 TPA3128D2 device allows it to do 2 × 30 W without external heat sink on a dual layer PCB. This device proposed an efficiency boost Mode, which can dynamically reduced the current ripple of the external LC filter and the idle current.
●The TPA3128D2 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 TPA3128D2 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.
● Supports Multiple Output Configurations
● 2 × 30 W Into a 8-Ω BTL Load at 24 V (TPA3128D2)
● 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 Combined With Low Idle Loss Greatly Eliminates Need for Heat Sink
● Adaptive Modulation Schemes based on Output Power
● Smart Amplifier Drivers to Reduce the Requirement for RC Snubbers
● 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
● DAP (32-Pin HTSSOP Pad Down for TPA3128D2)
