MPQ7790-AEC1 Mono BTL Class-D Audio Amplifier AEC-Q100 Qualified TSSOP-20

MPQ7790-AEC1 Mono BTL Class-D Audio Amplifier AEC-Q100 Qualified TSSOP-20

The MPQ7790 is an automotive grade, low-EMI, analog input class-D audio amplifier, which can drive mono speakers in a bridge-tied load configuration.

Key Specifications

Features

• 5.5 to 18V PVCC
• ±4.5A Peak Current Output
• Output Power: 9W at 12V, 8Ω Load, 10% THD 15W at 16V, 8Ω Load, 10% THD
• 90% Efficiency with 8Ω Load, 10% THD
• 300mΩ Power MOSFETs
• Start-Up/Shutdown Pop Elimination
• Short-Circuit Protection Circuits
• EMI Reduction Technique
• All Switches Current Limited
• Internal Under-Voltage Protection

Typical Application Circuit

Applications

• Automotive E-Call

Design Notes

• The output LC filter corner should sit well below the modulation frequency but above the audio band; component tolerance shifts it more than the nominal value suggests.
• Switching residuals on the speaker leads are best handled at layout — keep the filter close to the amplifier pins.
• Power supply rejection is frequency dependent, so a clean rail still matters at the modulation harmonics.
• The exposed pad is the thermal path; solder it to a copper area sized for continuous output power, not for idle.

Common Questions