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HI FI 32W Audio Amplifier - TDA2050 - Simple PS + PCB

Fig 1 - Hi-Fi 32W Audio Amplifier PCB

The circuit given here is of 32 Watt amplifier using the famous TDA2050V IC from ST Microelectronics.
The amplifier is built around a single integrated circuit, the TDA2050V that is an integrated monolithic 32 Watt class AB audio amplifier IC available in the Pentawatt package. The IC has a lot of good features as shown below.

  • High Output Power
  • 50W Music Power IEC 268.3 Rules
  • High Operating Supply Voltage - 50V
  • Single or Split Supply Operations
  • Very Low Distortion
  • Short Circuit Protection  - OUT to GND
  • Thermal Shutdown

Description

The TDA 2050 is a monolithic integrated circuit intended for use as an audio class AB audio amplifier. Thanks to its high power capability the TDA2050 is able to provide up to 35W true RMS power how showed below:

  • Into 4 ohm load @ THD = 10%, VS = ±18V, f = 1KHz up to 35W
  • Into 8 ohm load @ THD = 10%, VS = ±22V, f = 1KHz up to 32W
  • Into 4 ohm load over 1 sec at VS= 22.5V, f = 1KHz up to 50W

The high power and very low harmonic and crossover distortion THD = 0.05% typ, @ VS = ±22V, PO = 0.1 to 15W, RL=8ohm, f = 100Hz to 15KHz) make the device most suitable for both HiFi and high class TV sets.

The schematic diagram is shown in Figure 2 below, it is a simple circuit to assemble, and to use it in Stereo, we can assemble two of the same, one for each channel.

Fig. 2 - Schematic diagram Hi Fi 32W Audio Amplifier - TDA2050

Components List

The recommended values of the external components are those shown below. Different values can be used, however, to better performance, you must use these values.

Parts List

  • U1 .................................. Integrated Circuit TDA2050 Audio Power Amplifier
  • R1, R2, R3, R5 .............. 22KΩ 1/4w Resistor
  • R4 .................................. 680Ω 1/4w Resistor
  • R6 .................................. 2.2Ω 1/4w Resistor
  • C1 ................................... 2.2uF /25V Electrolytic capacitor
  • C2 .................................. 100uF /25V Electrolytic capacitor
  • C3, C7 ........................... 1000uF /50V Electrolytic capacitor
  • C4 .................................. 22uF /25V Electrolytic capacitor
  • C5 .................................. 100nF  Polyester Capacitor
  • C6 .................................. 0.47uF Polyester Capacitor
  • RP1 ................................ 47KΩ Potentiometer
  • P1, P2, P3 ...................... Screw Terminal Block: 2-Pin, 5 mm
  • Miscellaneous ............... Heatsink, screw, solder, etc.

Printed Circuit Board

We're providing the Printed Circuit Board, we leave the GERBER, PDF, LAYOUT files, to be downloaded at the link below.

Downloadable files

Files: Gerber, Layout in PDF, PNG, for download. Direct link: Click Here!

Any questions, suggestions, corrections, please leave us in the comments below, which we will soon be answering.

My best Regards to You!!!

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