Circuit 32w hi-fi audio power amplifier – TDA2050

The TDA 2050 is a monolithic integrated circuit in Pentawatt package, 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 into 4 ohm load @ THD = 10%, VS = ±18V, f = 1KHz and up to 32W into 8 ohm load @ THD = 10%, VS = ±22V, f = 1KHz. Moreover, the TDA 2050 delivers typically 50W music power into 4 ohm load over 1 sec at VS=
22.5V, f = 1KHz.

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

• 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

SHORT CIRCUIT PROTECTION

The TDA 2050 has an original circuit which limits the current of the output transistors. The maximum output current is a function of the collector emitter voltage; hence the output transistors work within their safe operating area. This function can therefore be considered as being peak power limiting rather than simple current limiting.
It reduces the possibility that the device gets damaged during an accidental short circuit from AC output to ground.

THERMAL SHUTDOWN

The presence of a thermal limiting circuit offers the following advantages:
1)An overload on the output (even if it is permanent), or an above limit ambient temperature
can be easily tolerated since the Tj cannot be higher than 150°C.
2)The heatsink can have a smaller factor of safety compared with that of a conventional circuit. There is no possibility of device damage due to high junction temperature. If for
any reason, the junction temperature increases up to 150°C, the thermal shutdown simply reduces the power dissipation and the current consumption.

Schematic of Amplifier with tda 2050

Suggested printed circuit board for mounting circuit

Printed circuit board layout component side click to enlarge

List of components for assembly of the amplifier tda2050

Component	Value
C1	2.2µF/25v
C2	100µF/25v
C3, C7	1000µF/25v
C4	22µF/25v
C5	100nF -> 104, 100nF, 0.1, .1, ou 100n
C6	0.47µF
IC1	tda2050
IN	Connector
VCC	Connector
OUT	connector
R1, R2, R3, R5	22k -
R4	680 Ohms
R6	2.2 Ohms

The Power supply for this circuit should be 18 volts / 2 amperes

Users electronic tags:

tda2050, amplificador tda, amplifier 2050, tda2050 layout, TDA2050 preamp