21ic News STMicroelectronics (ST) introduces the highest performance and ease of use in automotive audio power amplifiers. The new product is suitable for commercial vehicles such as trucks and buses with an operating voltage of 24V and agricultural vehicles (12V for car electrical systems). This is the first in the world to install any external components in a car with a working voltage of 24V. The audio power amplifier that directly drives the speaker proves the long-term focus and R&D investment of the STMicroelectronics in the automotive market.
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Luca Celant, director of audio and power marketing at STMicroelectronics Automotive, said: “The millions of truck drivers and other heavy-duty drivers are usually alone and long-distance driving. High-quality sound systems help them relax and concentrate. However, until now, they can barely use the sound system of existing heavy vehicles. With our leadership in the global automotive audio power amplifier market, STMicroelectronics has developed this unique product that allows heavy-duty vehicle drivers to enjoy Only high-quality audio is available in new cars."
Automotive audio amplifiers must be able to withstand the effects of harsh automotive environments, including high-intensity electrical noise, and must provide comprehensive protection against potentially dangerous accidents such as short circuits, load dumps, and chip overheating. The audio amplifier of the 12V automotive system is very precise. Without the addition of external components, car audio manufacturers are still unable to replicate the audio performance of 12V systems in 24V automotive systems. Adding external components not only increases the cost, but even under certain conditions. There are still security risks.
ST's TDA7576B 24V audio power amplifier overcomes this challenge. The product uses the market-proven mass production semiconductor process technology BCD5, monolithic integrated power module and signal management module, more chip solutions are more cost-effective, can withstand 60V peak supply voltage without any damage. As the highest performance 24V system audio power amplifier on the market, the TDA7576B uses exactly the same design principles and R&D investment as the STMicroelectronics car radio power amplifier, so heavy-duty vehicle drivers can enjoy a car-grade high-quality sound system.
The TDA7576B audio amplifier further expands the 24V automotive-specific product portfolio of STMicroelectronics, including recently introduced external lighting chips and internal lighting chips.
The main features of the TDA7576B:
• 24V battery power;
• High output power (2 x 20 W);
• Significantly reduce the number of external components, such as no decoupling capacitors, bootstrap capacitors, and no compensation components;
• Integrated power-saving standby function;
• Diagnose the output pin; issue a clipping, short circuit or overheat alarm;
• Output DC offset detection (offset detection);
• Protection function: 60V load protection, chip overheat protection, electrostatic discharge (ESD) protection, output GND or Vcc short circuit or load short circuit protection.
The TDA7576B is available now in a compact Multiwatt15 package.
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