Texas Instruments TPA3128D2/TPA3129D2 Class-D Amplifiers have low idle power loss. This feature 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 × 30W without an external heat sink on a dual-layer PCB. The high efficiency of the TPA3129D2 device enables it to do 2 × 15W without an external heat sink on a dual-layer PCB. Each device includes an efficiency boost Mode, which can dynamically reduce the current ripple of the external LC filter and the idle current. The Texas Instruments TPA3128D2/TPA3129D2 advanced oscillator/PLL circuit employs a multiple switching frequency option. This option allows the device to avoid AM interferences, achieved with either a master or slave option, making it possible to synchronize multiple devices.
