TPA3123D2PWPR

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The TPA3123D2PWPR is a highly efficient, bridge-tied-load (BTL) class-D audio amplifier that features high efficiency of up to 91%. It is designed for use in audio applications such as home-theatre systems, multi-speaker systems, portable audio systems, and automotive audio systems. It offers excellent performance in both low-power and high-power applications. It is capable of up to 10 W of stereo output at 4 Ω, while delivering up to 20 W of mono output at 4 Ω.

Application Field

The TPA3123D2PWPR is designed for use in high-fidelity audio systems. It is ideal for applications such as home-theatre systems, multi-speaker systems, portable audio systems, and automotive audio systems. It offers excellent performance in both low-power and high-power applications. It is capable of up to 10 W of stereo output at 4 Ω, while delivering up to 20 W of mono output at 4 Ω.

It is also suitable for public address systems and background music systems. It is highly efficient and can drive up to 4 Ω of load impedance. It also features low distortion and high signal-to-noise ratio. It is easy to use and requires minimal setup.

Working Principle

The TPA3123D2PWPR operates in a bridge-tied-load (BTL) configuration. This means that the power supply connects to the amplifier’s outputs. On each side, the amplifier output is connected to the signals at the speaker terminals, and to the other side of the power supply. This configuration eliminates the need for a center tap on the power supply, allowing for higher efficiency.

The amplifier is powered by a two-stage amplifier output stage, consisting of a MOSFET driver and a power MOSFET. The MOSFET driver is responsible for driving the power MOSFET, which is responsible for delivering audio power to the load. The load can be a loudspeaker or a headphone. The power MOSFET is driven in a bi-directional fashion, and its frequency response is band-limited to less than 1,000 MHz.

The TPA3123D2PWPR employs a dynamic biasing scheme, which improves the system’s efficiency. The amplifier is integrated with several protection circuitry, including thermal shutdown, short-circuit protection, and under-voltage lockout. This ensures reliable operation and enhanced system safety. The amplifier also integrates thermal compensation, which helps to maintain the performance over a wide temperature range.

The amplifier has a wide bandwidth, making it suitable for applications such as hi-fi audio amplifiers. It has a high signal-to-noise and low distortion ratio, making it ideal for applications such as home-theatre systems, multi-speaker systems, portable audio systems, and automotive audio systems. It is compact and easy to use.

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