The TPA3156D2 has low idle power loss and helps to extend the battery life ofBluetooth/Wireless speakers and other battery-powered audio systems. The high efficiency of theTPA3156D2 device allows it to do 2 × 70 W with external heat sink on a dual layer PCB. This deviceintegrates an efficiency boost mode, which dynamically reduces the current ripple of the externalLC filter and the idle current .
The TPA3156D2 advanced oscillator/PLL circuit employs a multiple switching frequencyoption to avoid AM interferences, which is achieved together with an option of either master orslave option, making it possible to synchronize multiple devices.
The TPA3156D2 devices are fully protected against faults with short-circuit protectionand thermal protection as well as overvoltage, undervoltage, and DC protection. Faults are reportedback to the processor to prevent devices from being damaged during overload conditions.