Infineon Technologies : MERUS™ class D audio amplifier multichip module enables small footprint, high power density, and heatsink-free operation
February 18, 2022 at 03:31 am EST
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MERUS™ class D audio amplifier multichip module enables small footprint, high power density, and heatsink-free operation
Feb 18, 2022| Market News
Munich, Germany - 18 February, 2022 - Class D audio power amplifiers offer a combination of small size, low heat dissipation, high integration, and excellent sound quality. Unlocking the potential of its best-in-class power MOSFET technology, Infineon Technologies AG (FSE: IFX / OTCQX: IFNNY) introduces the MERUS™ 2-channel, analog input, class D audio amplifier multichip module (MCM) MA5332MS. It is a powerful upgrade to its predecessor, offering the same or even higher output power than monolithic alternatives, without a heatsink and 50 percent less footprint. In the 100-400 W/channel range, MA5332MS is ideal for consumer products including home theaters in a box, soundbars, subwoofers, and mini-component systems. It is also well suited for professional applications like active speakers, active studio monitors, guitar amplifiers, aftermarket car, and marine audio amplifiers.
Coming in a compact 7 x 7 mm 2 42-pin QFN package, MA5332MS integrates a dual-channel PWM controller, a high-voltage gate driver, and four low R DS(ON) MOSFETs. Τhanks to its very low R DS(on) class D output stage (24.4 mΩ typical), it can deliver 2 x 100 W at 4 Ω operating absolutely heatsink-free or 2 x 200 W at 4 Ω with a small 8°C/W heatsink. Compared to other single-chip solutions this is a considerably reduced size. MA5332MS offers differential or single-ended input and multiple output configuration options, single-ended (2x SE), bridge-tied load (BTL), and parallel single-ended (PSE), using a single or split power supply. Enabling an SE topology as an alternative to BTL allows for reduced bus capacitors and output low-pass filters.
As a highly-integrated MCM, MA5332MS also integrates protection circuitry for functions such as over-current, over-temperature, and under-voltage protection with self-reset capability. This on-chip protection circuitry saves the time to design protection using external protection components. Additionally, a new internal logic scheme to control soft-start operation delivers a further reduction of click and pop noise. Based on its improved features, MA5332MS reduces BOM cost and thermal management concerns, providing more space for the industrial design and delivering superior efficiency and low output distortion.
Availability
MERUS class D audio amplifier multichip module MA5332MS can be ordered now in a PG-IQFN-42 package. More information is available at www.infineon.com/ma5332ms and www.infineon.com/merus
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Information Number
INFPSS202202-056
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Coming in a compact 7 x 7 mm² 42-pin QFN package, MERUS™ MA5332MS from Infineon integrates a dual-channel PWM controller, a high-voltage gate driver, and four low RDS(ON) MOSFETs. Thanks to its very low RDS(on) class D output stage (24.4 mΩ typical), it can deliver 2 x 100 W at 4 Ω operating absolutely heatsink-free or 2 x 200 W at 4 Ω with a small 8°C/W heatsink. Compared to other single-chip solutions this is a considerably reduced size.
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Infineon Technologies AG published this content on 18 February 2022 and is solely responsible for the information contained therein. Distributed by Public, unedited and unaltered, on 18 February 2022 08:30:03 UTC.
Infineon Technologies AG is one of the world's leading manufacturers of semiconductors. The group's products include power semiconductors, sensors, microcontrollers, digital, mixed-signal and analog ICs, discrete semiconductor modules, switches, interface ICs, motor-controlling ICs, RF power transistors, voltage regulators, and electronic safety components. Net sales break down by area of activity as follows:
- automotive (50.5%): semiconductor products used in the automotive industry, and memory products for specific applications for automotive, industrial, information technologies, telecommunications and consumer electronics.
- power & sensor systems (23.3%): semiconductors for energy-efficient power supplies, mobile devices, mobile phone network infrastructures, human-machine interaction as well as applications with special demands on their robustness and reliability.
- industrial power control (13.5%): semiconductor products for the conversion of electrical energy for small, medium and high-power applications, used in the manufacturing, the low-loss transmission, the storage and the efficient use of electrical energy;
- connected secure systems (12.6%): semiconductors for networked devices, card-based applications, and government documents; microcontrollers for industrial, entertainment, and household applications, components for connectivity systems, various customer support systems;
- other (0.1%).
Net sales are distributed geographically as follows: Germany (12.4%), Europe/Middle East/Africa (14.4%), China/Hong Kong/Taiwan (32.3%), Japan (10.5%), Asia/Pacific (15.9%), the United States (12.1%) and Americas (2.4%).
INFINEON TECHNOLOGIES AG 
