Fig. 1 - High Fidelity 14W - 12V Power Amplifier using TDA2030 IC

The TDA2030 is a monolithic integrated circuit in a Pentawatt® package, intended to be used as a low frequency Class AB amplifier. 

Typically, it provides output power of 14W (d = 0.5%) at 14V / 4Ω; at ± 14V the guaranteed output power is 12W with a load of 4Ω and 8W on an 8Ω.

In Figure 2, we can see the pinout of the TDA2030, it provides a high current output and very low harmonic and cross distortion. 

Fig. 2 - Pinout TDA2030

In addition, the device incorporates a short-circuit protection system and an arrangement to automatically limit the dissipated energy so as to keep the working point of the output transistors within their safe operating area. A conventional thermal shutdown system is also included.

Features

• Wide-range supply voltage, up to 36 V
• Single power supply
• Short-circuit protection to ground
• Thermal shutdown
• Low distortion
  
  

PROTECTION AGAINST SHORT CIRCUIT

The TDA2030 has a unique circuit that limits current from the output transistors. the maximum output current is a function of the emitter-collector voltage; hence the output transistors work within their safe operating area. 

This function can therefore be considered to be peak power limiting rather than simple current limiting. Reduces the possibility of the device being damaged during an accidental output short circuit.

THERMAL DISCONNECTION

The presence of a thermal limiting circuit offers the following advantages:

1. An output overload (even if it is permanent), or an ambient temperature above the limit can be easily withstood as the Tj cannot exceed 150°C.
   
   
2. The heat sink may have a lower safety factor compared to a conventional circuit. There is no possibility of damage to the device due to high junction temperature. If for some reason the junction temperature rises up to 150°C, thermal shutdown simply reduces power dissipation at current consumption.

The maximum allowable power dissipation depends on the size of the external heat sink (ie thermal resistance); this power is dissipated depending on the ambient temperature for different thermal resistance.

The schematic circuit is shown in Figure 3, it is a very simple circuit, which can be easily assembled even by people who are not experienced in circuit assembly.

Fig. 3 - Schematic High Fidelity 14W - 12V Power Amplifier using TDA2030 IC

Component List

• Semiconductors
• U1 .................. TDA2030 Integrated Circuit
• D1, D2 ........... 1N4007 Silicon Diode
  
  
• Resistors:    
• R1, R2, R3 ..... 100KΩ resistor (brown, black, yellow, gold)
• R4 .................. 4K7Ω resistor (yellow, red, purple, gold)
• R5 .................. 150KΩ resistor (brown, green, yellow, gold)
• R6 .................. 1Ω / 1W resistor (brown, black, gold, gold) 
• RP1 ............... 22KΩ Potentiometer
  
  
• Capacitors
• C1 ................. 2.2µF / 35V Electrolytic Capacitor
• C2 ................. 22µF / 35V Electrolytic Capacitor
• C3 ................. 1000µF / 35V Electrolytic Capacitor
• C4 ................. 2µF / 35V Electrolytic Capacitor
• C5 ................. 100nF Polyester or Ceramic Capacitor
• C6.................. 220nF polyester or ceramic
• C7 ................. 2200µF / 35V Electrolytic Capacitor
  
  
• Others
• P1, P2, P3 ... Screw Terminal Type 5mm 2-Pin Connector
• Printed circuit board, heat sink, box, wires, etc.
  
  

In Figure 4, we are offering the PCB - Printed Circuit Board, in GERBER, PDF and PNG files, for you who want to do the most optimized assembly, either at home, or if you prefer in a company that develops the board, you can is downloading and make the files in the Download option below.

Fig. 4 - PCB - High Fidelity 14W - 12V Power Amplifier using TDA2030 IC

Files to Download, Direct Link:

Fig.- 24W Stereo Hi-Fi Audio Amplifier using TDA2616 + PCB

In this article, we show you how to build a simple and portable 12W + 12W audio amplifier using the TDA2616 Integrated Circuit.

The TDA2616 IC is a stereo power audio amplifier, it comes with plastic package (SOT131) single-in-line 9-lead (SIL9).

This IC is explicitly designed for mains powered amplifier circuits, such as stereo radio, instrument return box, TV sets and so on.

The TDA2616 IC has a good input gain balance on both channels in accordance with IEC 268 and DIN 45500 standards.

In addition, the TDA2616 has a special integrated circuit for the suppression of noise signals at the inputs during activation and deactivation, which avoids clicking sounds or the famous popping during circuit operation.

You might also be interested in:

Features

• Requires very few external components
• No switch-on/switch-off clicks
• Input mute during switch-on and switch-off
• Low offset voltage between output and ground
• Excellent gain balance of both amplifiers
• Hi-fi in accordance with IEC 268 and DIN 45500
• Short-circuit proof and thermal protected
• Mute possibility.
  
  

In Figure 2 below, we show the complete 24W Stereo Audio Amplifier Circuit using TDA2616 IC, as we can see, there are few external components, which makes it easier for those who do not have much experience with assembling electronic circuits.

Fig. 2 - Schematic 24W Stereo Hi-Fi Audio Amplifier with Mute using TDA2616

Amplifier Operation 

This amplifier circuit was designed to work with a symmetrical power supply, the maximum power supply voltage is 21V, however the recommended is 16V, with this voltage, an output power of 2 × 12 W is obtained (with THD = 0 .5%) with a load of 8Ω.

The mute circuit can also be activated via pin 2. When a current of 300µA is present at pin 2, the circuit is in the mute condition.

The internal gain voltage is fixed at 30dB, which allows us a stable balance between the two amplifier channels (0.2dB).

Components List

Fig. 3 - PCB - 3D - 24W Stereo Hi-Fi Audio Amplifier with Mute using TDA2616

Click on the direct 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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This circuit built based on TEA2025 IC which is a monolithic integrated audio amplifier in a 16-pin plastic dual in line package manufactured by UTC. 

The circuit has Internal Thermal Protector. It is designed for portable cassette players, mp3 players and radios. 

You can also use it as your smartphone or PC audio amplifier. This circuit requires 9V power supply to work, you may use a power supply circuit with output 9V 500mA DC current or a 9V lead acid battery.

Features

• The power supply voltage range is from 3V to 15V.
• Working Voltage down to 3V
• Few External components
• Dual or Bridge Connection Modes
• High Channel isolation
  
• Very low switch On/Off Noise
• Voltage gain up to 45dB(Adjustable with external resistor)
• Soft clipping
• Internal Thermal protection
  
  

Working Explanation

Applications

• Electronic Instruments
• PC sound speaker
• Home theater systems
• Hi-fi electronic gadgets and devices
• Robotics applications 
• Children’s gadgets and toys, etc.
  
  

Fig. 1 - Schematic 5W Stereo Audio Amplifier Circuit using TEA2025 IC

Components List

• U1 ................................ TEA2025 Integrated circuit
  
  
• R1, R2 ......................... 10K resistor (brown, black, orange, gold)
  
  
• C1, C2 ......................... 0.47uF ceramic, polyester capacitor 
• C3, C4, C5, C6, C9 ..... 100uF electrolytic capacitor
• C7, C11 ....................... 470uF electrolytic capacitor
• C8, C10 ....................... 0.15uF ceramic, polyester capacitor 
  
  
• P1, P2, P3, P4, P5 ....... Screw Terminal Type 5mm 2-Pin Connector

• Others ......................... PCB, tin, wires, etc.
  
  

PCB - Download

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".

Fig. 2 - 5W Stereo Audio Amplifier Circuit using TEA2025

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

Para versão em Português, Clique Aqui!!!

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.

You might also be interested in:

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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My Best Regards!!!