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4 x 50W High Power Amplifier, 14.4V - IC TDA7563A + PCB

Fig 1. - PCB 4 x 50W High Power Amplifier, 14.4V - IC TDA7563A

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This is a 200W High Power Amplifier Circuit, and its great trump card is that it works with a simple power source and still at 14.4V, which means we can plug in a 12V car battery, or motorbike battery, or UPS battery, etc.

Also, the circuit is very easy to build as it requires very few external components.

The TDA7563A is a quad-bridge type amplifier of BCD technology in Flexiwatt27 and Power SO36 packages designed specifically for car radio applications.

Thanks to the DMOS output stage, the TDA7563A has very low distortion, which allows for clear and powerful sound. 

Features include its superior efficiency performance resulting from the unique internal system structure, making it the device best suited to simplify thermal management in high power packages.

This device is equipped with a complete diagnostic matrix that communicates the status of each speaker via the I2C bus.

Features

  • Multiple Power BCD Technology
  • MOSFET output power stage
  • DMOS power output
  • New high efficiency technology (SB class)
  • High output power capacity 4x28W / 4Ω @ 14.4V, 1kHz, 10% THD, maximum power 4x50W
  • Maximum output power 4x72W / 2Ω
  • Complete conduction of I2C bus:
  • Standby
  • Front/rear independent, smoothed play/mute
  • Selectable 26dB / 12dB gain (for low noise line output function)
  • Enable / disable high efficiency
  • I2C bus digital diagnostics (including DC AC load detection)
  • Total failure protection
  • DC offset detection
  • Four independent short circuit protection
  • Cutting Detector Pin with Selectable Threshold (2% / 10%)
  • Standby/mute pin
  • Linear thermal shutdown with multiple thermal warnings
  • ESD protection

In Figure 2 below, you can see the schematic of the High Efficiency Power Amplifier. We can understand and analyze the simplicity of the circuit and see that it is an easy to assemble circuit with few external components.

Fig 2 - Schematic Diagram 4 x 50W High Power Amplifier, 14.4V - IC TDA7563A

Power Supply

This amplifier is powered by a single positive and negative voltage power supply and has a supply voltage range that varies with a minimum voltage of 8V and a maximum voltage of 18V

The typical working voltage with no load on the integrated circuit is 14.4V.

The power supply must have a current of at least 5 amps to be used in mono mode, when mounted in stereo version, "two channels", the current must be doubled, and it must also be provided with a good filtering to avoid a ripples system that can cause noise in the amplifier.

The working impedance value of this amplifier to reach its total power is 4 ohms, but we can also set it to 8 ohms, but then we will not get the maximum power from the amplifier.

Components List

  • CI1 ......................... Integrated Circuit TDA7563A
  • C1, C2, C3, C4 ...... 220nF Ceramic / Polyester Capacitors
  • C5 ........................... Capacitors 1uF / 63v
  • C6 ........................... Electrolytic Capacitor 10uF / 63v
  • R1 ........................... 47K Ohm resistors
  • R2 ........................... 8K2 ohm resistor
  • R3 ........................... Resistor 4K7 ohms
  • P1 to P9 .................. KF301 solderable 2-Pin Bolt-On Connector (Optional)
  • J1............................. 3 Ways 1x3 Weldable Male Pin Bar
  • Others ..................... Heatsink for IC, wires, connectors, PCI, tin etc.

We provide the files with the PCB, the schematic, the PDF, GERBER and JPG, PNG and provide a direct link for free download and a direct link, "MEGA".

Direct Download Link

Click on the link to download the files: Layout PCB, PDF, GERBER, JPG

If you have any questions, suggestions or corrections, please leave them in the comments and we will answer them soon.

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