MP8040 7.5-25V High Current Power Half Bridge SOIC

MP8040 7.5-25V High Current Power Half Bridge SOIC

The MP8040 is a general purpose, high frequency half bridge power driver capable of driving a 9A load.

Key Specifications

Features

• ±9A Peak Current Output
• ±4.25A Continuous Current Output
• Up to 1.2MHz Switching Frequency
• Protected Integrated Power 100mΩ Switches
• All Switches Current Limited
• Integrated Under-Voltage Protection
• Integrated Thermal Protection
• 2.5µA Standby Mode
• True 2-Quadrant Operation
• Sources and Sinks Current

Typical Application Circuit

Applications

• Class D Audio Driver o 25W/4Ω/10% Output Power Single Ended o 70W/4Ω/10% Output Power Full Bridge
• Full or Half Bridge DC-DC Switching Regulator
• Motor Driver "MPS" and "The Future of Analog IC Technology" are Trademarks of Monolithic Power Systems, Inc.

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