Texas Instruments TPA005D12 manual Details

The TPA005D12 Class-D Audio Power Amplifier Evaluation Module

3.2 The TPA005D12 Class-D Audio Power Amplifier Evaluation Module

The TPA005D12 class-D stereo audio power amplifier evaluation module is powered by a TPA005D12 class-D stereo power amplifier integrated circuit. The EVM is capable of delivering greater than 2 W of continuous average power per channel into 4-Ωloads at less than 0.6% THD+N over a 20-Hz to 20-kHz frequency range from a 5-V supply.

The TPA005D12 amplifier IC operates in the bridge-tied load (BTL) mode for maximum efficiency during class-D operation. The high IC switching frequency reduces the size of the output filter to three small capacitors and two small inductors per class-D channel. The evaluation module includes onboard pushbutton switches for manual muting and shutdown, and input pins for logic control of mode, mute, and shutdown.

The module can be used with the TI plug-n-play audio amplifier evaluation platform (Figure 3±1) or wired directly into circuits or equipment. The module has single in-line header connector pins mounted to the underside of the board. These pins allow the module to be plugged into the platform, which automatically makes all the signal input and output, power, and control connections to the module.

The module connection pins are on 0.1-inch centers to allow easy use with standard perf board and plug board-based prototyping systems. Or, the EVM can be wired directly into existing circuits and equipment when used stand-alone.

The module appears in Figure 3±2 (top side) and Figure 3±3 (bottom side), and its schematic is shown in Figure 3±4. Note that several components are mounted on the bottom side of the EVM PCB.

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