TAS2555YZT

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TAS2555YZT Application Field and Working Principle

The TAS2555YZT Class-D audio amplifier IC is capable of driving 5-6W of power through a single power supply. Class-D amplifiers have been around for a few decades but have recently been gaining more popularity because of their high efficiency and low power consumption. This power efficiency can be attributed to the use of pulse-width modulation (PWM), where the audio signal is converted into pulse-width modulated power pulses. With more efficient background components such as ferrite for magnetic movement, the TAS2555YZT is able to cram a lot of power into a small space.

The amplifier operates on a single 5V power supply, making it attractive for mobile applications. Speakers with resonance frequencies in the range of 15-25 kHz can be driven with this amplifier without much distortion. It is also fully protected by an integrated speaker protection circuit, allowing it to withstand high levels of current and voltage without damaging the speaker. The amplifier also compensates for the temperature variation of the bias voltage to optimize the operating temperature.

The typical application field of this amplifier is the audio line-level home entertainment. It can be used in conjunction with traditional home theaters, amplifiers and receivers, speakers, subwoofers, and ground-shaking systems. It is suitable for applications where power output is required but size and weight are limitations. In addition, the amplifier is sometimes used in powered desktop computers, smartphones, gaming consoles, and similar systems.

Working Principle of TAS2555YZT

The TAS2555YZT Class-D amplifier works on a pulse-width modulation (PWM) technique to efficiently transfer the audio signal for power output. This technique involves converting the input audio signal into PWM pulses of varying width. The modulation is then performed in order to apply varying duty cycles to the pulses, in turn controlling the output current. This technique enables the transfer of large power in a very efficient manner.

The PWM signal generated is then fed to a power amplifier stage in order to drive the load. The amplifier is capable of driving a power range of 5-6W, with the output power and stereo channels being adjustable. The PWM signal is fed to a power amplifier stage which includes two complementary outputs, each of which are responsible for one of the stereo channels and their corresponding output power.

The amplifier is equipped with various background protection components, such as an integrated speaker protection circuit, an over current protection circuit, an over heating protection circuit, an under voltage protection circuit, and an electromagnetic interference protection circuit. The amplifier also compensates for the temperature variation of the bias voltage to optimize the operating temperature.

Conclusion

The TAS2555YZT Class-D audio amplifier IC is a very efficient power amplifier that is capable of driving 5-6W of power from a single 5V power supply. It is suitable for audio applications where size and weight are limited, and can be paired with traditional home theaters, amplifiers and receivers, speakers, and ground-shaking systems. It works on a pulse-width modulation (PWM) technique to transfer large powers in a very efficient manner.

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