TAS5612PHDR

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The TAS5612 is a class D audio amplifier capable of delivering up to 2 x 250 Watts RMS into 4 ohms from a single-ended 12V or 24V supply. It is mainly intended for driving medium to high-power speakers in professional sound, home entertainment and automotive audio applications. The TAS5612 also provides protection for the power stages, including over-current, over-temperature, output short-circuit and DC-Rail losses. In addition, it features a wide power-down mode, allowing it to remain in the OFF state, even when powered up.

The TAS5612 is based on a current-mode, half-bridge topology with two complementing outputs, a driver, a controller and a power stage. This topology enables the amplifier to deliver a high power output with a wide bandwidth and low distortion. It also ensures excellent efficiency and high tolerance to short-circuit conditions and low power supply voltages.

The driver stage of the TAS5612 comprises two high-current p-channel MOSFETs and two matched N-channel MOSFETs coupled in a half-bridge configuration. This arrangement results in a linear current density, and thus low power losses. The power transistors on the low side are protected using a voltage sense method and can switch up to 20 Amps.

The controller circuit of the amplifier is based on a custom tailored, high performance, mixed-signal PWM controller IC which is capable of providing a wide variety of control signals from the main amplifier stage. This includes a TRIAC-like drive for efficient power delivery, a High Side MOSFET driver for protection against output short circuits, and a spread spectrum PWM driver with both high and low power settings.

The power stage of the amplifier consists of an inductor, two power transistors coupled in a half-bridge configuration, and two output filter capacitors. This stage is capable of delivering up to 250 Watts RMS into a 16 Ohm load or two 125 Watt RMS channels into a 4 Ohm load. The device is also capable of operating in the multi-channel mode, in which the amplifier channels can be interconnected to drive more than one loudspeaker at an extended power output.

In addition to its exceptional power performance, the TAS5612 also features a wide range of protection features, including output short circuit, over-current and over-temperature protection. The power transistors are also protected against ESD-induced damage. The amplifier also allows for the output power levels to be adjusted from the amplifier\'s control pins, allowing for better power efficiency, especially in low power applications.

The TAS5612 is a great choice for audio applications requiring a high power, efficient, low distortion audio amplifier. With its wide range of protection features, the amplifier ensures robust operation at high levels of power and low power supply voltages. The low distortion and fast transients delivered by the amplifier make it an ideal choice for applications demanding clear and faithful sound reproduction.

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