TDA7572

Overview

The TDA7572 is a highly integrated Class-D mono bridge PWM audio amplifier with an internal step-up converter. It supports 14 V and 42 V automotive buses or split supplies. Key parameters include a 200 W output power, 0.01% THD+N, and a 64-pin HiQUAD package. Operating voltage ranges from 9 V to 58 V. The junction temperature range is -40 °C to 150 °C. Input offset voltage is typically 3 mV.

Feature Summary

• Integrates a current mode control boost converter for high power operation in 14 V environments.
• Features an input stage with programmable gain compression and over-modulation protection.
• Includes a digital-to-analog converter supporting I2S inputs for digital audio processing.
• Provides comprehensive diagnostics and safety features via I2C interface.

Applications

• Standalone remote bass box applications
• Automotive audio systems
• Consumer audio environments

Procurement Notes

Verify component authenticity through authorized STMicroelectronics distributors. Confirm the specific revision level matches design requirements. Check datasheet for absolute maximum ratings to ensure safe operating conditions. Validate pin compatibility with existing PCB layouts. Review thermal management guidelines for proper heat dissipation.

Selection Notes

Select this component for designs requiring high efficiency and integrated power boosting. Consider the HiQUAD-64 package for thermal performance. Ensure support for I2C configuration if digital control is needed. Evaluate the need for external FETs compatible with the gate drive specifications. Verify supply voltage compatibility with the target application environment.

Part Context

This device belongs to STMicroelectronics' portfolio of semi-custom switch-mode audio amplifiers. It is designed for versatility in both automotive and consumer sectors. The integration of signal processing and power amplification reduces system complexity. It represents a solution for high-power audio applications requiring compact form factors.

Replacement Considerations

No direct public substitute part numbers are confirmed in the provided documentation. Designers should evaluate functional equivalents based on power rating, package type, and interface compatibility. Consult STMicroelectronics for updated product recommendations if discontinuation is a concern.

FAQ

How does the TDA7572 handle over-modulation?

It uses adaptive pulse injection to prevent missing pulses due to over-modulation, which maximizes useful output swing.

What diagnostic capabilities are available?

The device monitors for DC offset, short circuits, open loads, overcurrent, and over-temperature conditions, reporting faults via I2C or dedicated pins.