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IR4321M
  • IR4321M

IR4321M

Active and preferred

The IR4321M multichip module offers the same or higher output power as monolithic alternatives with minimal heatsinking. This solution integrates a PWM controller, high-voltage gate driver, and 2 low RDS(ON) MOSFETs. It includes standard class D protection features for reliable operation over various environmental conditions. The IR4321M 5x6 mm PQFN22 package showcases the benefit of a small footprint and high-power density.

Infineon Technologies IR4321M Product Info

16 April 2026 0

Parameters

Audio Input Type

Analog

Description

Integrated 90W - 1 channel analog input Class-D amplifier

Output Power ((W per channel))

90 W

Package

PQFN 22 pins

Speaker Channels

1

Supply Voltage ((V))

+/-25 or 50

Technology

CMCM

Features

  • 135Wx1, 2Ω into 10% THD+N
  • Small 5 x 6 mm PQFN22 package
  • No mechanical heatsink required
  • Split or single power supply
  • Differential or single-ended input
  • Single-ended
  • OCP, OTP, and UVLO with reset

Description

  • analog input in 5 x 6mm PQFN
  • High peak music power output
  • No mechanical heatsink required
  • Split or single power supply
  • Differential or single-ended input
  • OCP, OTP, & UVP with self-reset
  • Start/stop click noise reduction
  • High noise immunity
  • RoHS compliant

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