4x12W car radio power amplifier

FEATURES:

Requires very few external components

High output power

Fixed gain

Diagnostic facility (distortion, short-circuit and temperature detection)

Good ripple rejection

Mode select switch (operating, mute and stand-by)

Load dump protection

AC and DC short-circuit safe to ground and to VP

Low power dissipation in any short-circuit condition

Thermally protected

Reverse polarity safe

Electrostatic discharge protection

No switch-on/switch-off plop

Flexible leads

Low thermal resistance

Identical inputs.

GENERAL DESCRIPTION:

The TDA8562Q is an integrated class-B output amplifier in a 17-lead single-in-line (SIL) power package. It contains 4 × 12 W single-ended amplifiers.

Circuit Diagram:

4x12W car radio power amplifier

2 x 210 W audio power amplifier Class-D

General description:

The TDA8954 is a stereo or mono high-efficiency Class D audio power amplifier in a  single IC featuring low power dissipation. It is designed to deliver up to 2 × 210 W into a 4 Ω load in a stereo Single-Ended (SE) application, or 1 × 420 W into an 8 Ω load in a mono Bridge-Tied Load (BTL) application. It combines the benefits of Class D efficiency (≈93 % into a 4 Ω load) with audiophile sound quality comparable to that associated with Class AB amplification. The amplifier operates over a wide supply voltage range from ±12.5 V to ±42.5 V and  features low quiescent current consumption. The TDA8954 is supplied with two diagnostic pins for monitoring the status of Thermal  Fold Back (TFB), Over Current Protection (OCP) and other protection circuits.

Features:

• „ High output power in typical applications:
• ‹ SE 2 × 210 W, RL = 4 Ω (VDD = 41 V; VSS = −41 V)
• ‹ SE 2 × 235 W, RL = 3 Ω (VDD = 39 V; VSS = −39 V)
• ‹ SE 2 × 150 W, RL = 6 Ω (VDD = 41 V; VSS = −41 V)
• ‹ BTL 1 × 420 W, RL = 8 Ω (VDD = 41 V; VSS = −41 V)
• „ Symmetrical operating supply voltage range from ±12.5 V to ±42.5 V
• „ Stereo full differential inputs, can be used as stereo SE or mono BTL amplifier
• „ Low noise
• „ Smooth pop noise-free start-up and switch off
• „ 2-pin diagnostics for protection circuits
• „ Fixed frequency internal or external clock
• „ High efficiency ≈93 %
• „ Zero dead time switching
• „ Low quiescent current
• „ Advanced protection strategy: voltage protection and output current limiting
• „ Thermal FoldBack (TFB) with disable functionality
• „ Fixed gain of 30 dB in SE and 36 dB in BTL applications
• „ Fully short-circuit proof across load
• „ BD modulation in BTL configuration
• „ Clock protection

Circuit Diagram:

Circuit Diagram 2 x 210 W audio power amplifier Class-D

Datasheet for TDA8954: Download

4x45W Stereo Power Amplifier Circuit Diagram TDA8596

General description:

The TDA8596 is a quad Bridge Tied Load (BTL) audio power amplifier with symmetrical inputs, made in BCDMOS technology. It contains four independent amplifier channels in BTL configuration with complementary (PMOST/NMOST) output stages. Temperature warning and output signal clipping diagnosis is possible via the I2C-bus and via the diagnostic pins (DIAG and STB pin). The temperature pre-warning level and clip detection levels can be programmed via the I2C-bus. The status of each amplifier channel (i.e. output offset, load connected or not, short circuit condition at the output pins) can be read out separately.

Features

• Operates in legacy mode (non I2C-bus) and I2C-bus mode (3.3 V and 5 V compliant)
• Three hardware-programmable I2C-bus addresses
• Drives 4 Ω or 2 Ω loads
• Balanced/symmetrical inputs
• Speaker fault detection
• Programmable gain (26 dB and 16 dB) also available in legacy mode
• Independent short circuit protection per channel
• Loss of ground and loss of VP safe (with 300 mΩ series impedance and a maximum supply decoupling capacitor of 2200 µF)
• All outputs are short-circuit proof to ground, supply voltage and across the load
• All pins are short circuit proof to ground
• Temperature-controlled gain reduction to prevent audio holes at high junction temperatures
• Low battery voltage detection
• Qualified in accordance with AEC-Q100

Circuit Diagram:

4x45W Stereo Power Amplifier Circuit Diagram TDA8596

Datasheet for TDA8596: Download

200 W mono bridge amplifier TDA7572

Features:

• Input stage and gain compressor
• Over-modulation protection and current limiting
• Modulator
• DAC
• Step-up
• Mode control
• Diagnostics / safety
• Power control

General Description:

TDA7572 is a highly integrated, highly versatile, semi-custom IC switch mode audio amplifier. It integrates audio signal processing and power amplification tailored for standalone remote bass box applications, while providing versatility for full bandwidth operation in either automotive or  consumer audio environments. It's configured as  one full bridge channel, using two clocked PWM  modulators driving external, complementary FET's. Broad operating voltage is supported, allowing operation from both 14 V and 42 V automotive power buses, as well as from split supplies for consumer electronics use. A current mode control boost converter controller is provided to allow high power operation in a 14 V environment. Turn-on and turn-off transients are minimized by soft muting/unmuting and careful control of offsets within the IC. Digital Audio input is supported by an integrated one channel DAC. Sophisticated diagnostics and protection provide fault reporting via I2C and power shutdown for safety related faults. TDA7572 is packaged in a HiQUAD-64 package.

Circuit Diagram:

200 W mono bridge amplifier TDA7572 single supply evaluation
Attention: for detail of circuit diagram please visit datasheet: view

Pins description:

TDA7572 pins description

PCB layout:

Bottom layer TDA7572

Single supply evaluation PCB TDA7572

80W Operational Amplifier

General Description:

The LM12 is a power op amp capable of driving g25V at g10A while operating from g30V supplies. The monolithic IC can deliver 80W of sine wave power into a 4X load with 0.01% distortion. Power bandwidth is 60 kHz. Further, a peak dissipation capability of 800W allows it to handle reactive loads such as transducers, actuators or small motors without derating. The IC delivers g10A output current at any output voltage yet is completely protected against overloads, including shorts to the supplies. The dynamic safe-area protection is provided by instantaneous peak-temperature limiting within the power transistor array The turn-on characteristics are controlled by keeping the output open-circuited until the total supply voltage reaches 14V. The output is also opened as the case temperature exceeds 150§C or as the supply voltage approaches the BVCEO of the output transistors. The IC withstands overvolt ages to 80V. 

Features:

• input protection
• controlled turn on
• thermal limiting
• overvoltage shutdown
• output-current limiting
• dynamic safe-area protection

Circuit Diagram:

80W Operational Amplifier: Right: connection diagram, left, Typical Applications

Datasheet: Download

150W Audio Circuit Diagram

Features:

• The use of a current mirror circuit, cascode circuit, pure complementary circuit provides low distortion (THD= 0.008%/100kHz LPF ON). 
• Possible to design electronic supplementary circuits (pop noise muting at the time of power ON/OFF, load short protector, thermal shutdown)
• Vcc max ±87 V
• Vcc recommended ±60 V 

Circuit Diagram

150W Audio Circuit Diagram

PCB Layout:

PCB layout for audio circuit STK4048

Power supply:

150W Audio Circuit Diagram

200W Power Amplifier Circuit Diagram

Features:

• Compact packaging supports slimmer set designs
• Series designed from 20 up to 100 W (200 W) and pin compatibility (120 to 200 W have 18 pins)
• Simpler heat sink design facilitates thermal design of slim stereo sets
• Current mirror circuit application reduce distortion to 0.08 %
• Supports addition of electronic circuits for thermal shutdown and load-short protection circuit as well as pop noise muting which occurs when the power supply switch is turned on and off

Parameters:

• Maximum supply voltage -  VCC max ± 95 V
• Thermal resistance  - θj-c 0.95 °C/W
• Junction temperature - Tj 150 °C
• Operating substrate temperature - Tc 125 °C
• Storage temperature - Tstg –30 to +125 °C
• Output power - PO 200W

Circuit Diagram:

200W Power Amplifier Circuit Diagram

Power Supply circuit:

power supply for 200w power amplifier circuit