TDA7384 Based 4x24W Car Audio Amplifier

The project is a 4×22W car audio amplifier based on TDA7384 that consists of 4 input and 4 output channels with power capability of 4×35W with 4 Ohms.

During the usage, each channel can give 22W if the amplifier is connected to car battery where the operating voltage is around 13.2V. The TDA7384 is a Class AB power amplifier that is enclosed in a flexiwatt25 package which is designed for high end car radio applications. It has standby and mute functions while having low distortion, low external component count, and low output noise. It is also capable of handling load dump voltage, thermal limiter, and very inductive loads since it has several protections from output short circuit to Ground. Without needing any boot strap capacitors, it allows rail to rail output voltage swing.

The chip can handle 4 channels working at power of 20W each since it has a maximum power dissipation of 80W. To ensure that the amplifier effectively dissipates heat, a radiator is used to have good ventilation. To ensure low thermal resistance, a thermal paste should be put between the chip and radiator. The PCB is single sided around 50×100mm.

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