MP8049S 5-26V, 5.5A Quad Channel Power Half-Bridge QFN40

MP8049S 5-26V, 5.5A Quad Channel Power Half-Bridge QFN40

The MP8049S is a configurable dual channel full-bridge or quad channel half-bridge that can be configured as the output stage of a Class-D audio amplifier.

Key Specifications

Features

• 5V to 26V VDD
• ±5.5A Peak Current Output
• Up to 1MHz Switching Frequency
• Protected Integrated Power 0.14Ω Switches
• 10ns Switch Dead Time
• All Switches Current Limited
• Internal Under Voltage Protection
• Internal Thermal Protection
• Short-circuit Protection
• Fault Output Flag

Typical Application Circuit

Applications

• Home Theaters

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