Class D audio amplifier IC

MERUS™ class D audio amplifier ICs, multi-chip modules, and discrete MOSFET and HEMT driver ICs

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MERUS™ multilevel class D audio amplifiers

Our unique MERUS™ multilevel class D audio amplifiers with their unique five-level modulation offer 10x less power dissipation, better approximation of the sound signal, and uncompromised audio performance with the possibility to use only ferrite beads for the output filtering. The integrated DSP option also minimizes the overall system cost.

MERUS™ multi-chip module (MCM) class D audio amplifiers

Our MERUS™ multi-chip module (MCM) class D audio amplifiers integrate record-proven class D controllers and state-of-the-art low RDS(on) MOSFETs into small QFN packages. The MCM devices offer ultra-high efficiency at full load without the need for bulky heatsinks. They also provide flexible power supply configurations (single rail or split rail) and support multiple speaker load configurations (2x single-ended, 1x BTL, or 1x paralleled single-ended), which reduces the number of low-pass filters needed by half.

Explore our multi-chip modules (MCM)
MERUS™ discrete class D solution

Our MERUS™ discrete audio solutions include highly scalable amplifier driver IC and power MOSFET combinations that offer superb audio performance and scalable output power up to 3000 W per channel. With Infineon's wide portfolio of power MOSFETs and GaN HEMTs, MERUS™ discrete audio solutions have become the standard for highly efficient, robust, and highly reliable industrial references in the high-power class D amplification market.

Explore our discrete audio amplifiers
Class D Audio Amplifier IC

MERUS™ class D audio amplifier ICs, multi-chip modules and discrete MOSFET/HEMT driver ICs

A traditional class D audio amplifier IC is a switching amplifier, usually consisting of two power MOSFETs with pulse-width-modulation (PWM) signal. An LC filter is needed for output levels >20 W which increases both size and costs.

With an increasing number of audio channels per product, traditional class D audio power amplifiers face design challenges in compact applications: low power efficiency, excessive heat generation (even at moderate listening levels), and the need for bulky, costly filters.

Infineon’s multilevel class D audio amplifier IC circuit technology – the world’s first of its kind – has made it possible to improve power consumption while reducing electromagnetic interference and out-of-band noise. Manufacturing costs can also be reduced by eliminating or minimizing the use of filters, helping to save design space.

With revolutionary multilevel class D audio amplifier ICs, Infineon leads in power efficiency and power density. Cooler, smaller, and lighter class D audio amplifiers for great sounding products.

MERUS™ multilevel class D audio amplifiers

Our unique MERUS™ multilevel class D audio amplifiers with their unique five-level modulation offer 10x less power dissipation, better approximation of the sound signal, and uncompromised audio performance with the possibility to use only ferrite beads for the output filtering. The integrated DSP option also minimizes the overall system cost.

MERUS™ multi-chip module (MCM) class D audio amplifiers

Our MERUS™ multi-chip module (MCM) class D audio amplifiers integrate record-proven class D controllers and state-of-the-art low RDS(on) MOSFETs into small QFN packages. The MCM devices offer ultra-high efficiency at full load without the need for bulky heatsinks. They also provide flexible power supply configurations (single rail or split rail) and support multiple speaker load configurations (2x single-ended, 1x BTL, or 1x paralleled single-ended), which reduces the number of low-pass filters needed by half.

Explore our multi-chip modules (MCM)

MERUS™ discrete class D solution

Our MERUS™ discrete audio solutions include highly scalable amplifier driver IC and power MOSFET combinations that offer superb audio performance and scalable output power up to 3000 W per channel. With Infineon's wide portfolio of power MOSFETs and GaN HEMTs, MERUS™ discrete audio solutions have become the standard for highly efficient, robust, and highly reliable industrial references in the high-power class D amplification market.

Explore our discrete audio amplifiers

Class D Audio Amplifier IC

MERUS™ class D audio amplifier ICs, multi-chip modules and discrete MOSFET/HEMT driver ICs

A traditional class D audio amplifier IC is a switching amplifier, usually consisting of two power MOSFETs with pulse-width-modulation (PWM) signal. An LC filter is needed for output levels >20 W which increases both size and costs.

With an increasing number of audio channels per product, traditional class D audio power amplifiers face design challenges in compact applications: low power efficiency, excessive heat generation (even at moderate listening levels), and the need for bulky, costly filters.

Infineon’s multilevel class D audio amplifier IC circuit technology – the world’s first of its kind – has made it possible to improve power consumption while reducing electromagnetic interference and out-of-band noise. Manufacturing costs can also be reduced by eliminating or minimizing the use of filters, helping to save design space.

With revolutionary multilevel class D audio amplifier ICs, Infineon leads in power efficiency and power density. Cooler, smaller, and lighter class D audio amplifiers for great sounding products.

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