Infineon introduces new 2 x 37 W audio amplifier family with 2nd generation MERUS
Infineon introduces new 2 x 37 W audio amplifier family with 2nd generation MERUS multilevel switching technology
"The MERUS™ multilevel switching technology from Infineon Technologies AG, designed to reduce switching losses and achieve efficient audio amplification performance at both low and high output powers, brings significant advantages for such applications. This This new IC family uses the second generation of MERUS™ multilevel switching amplifier technology in a compact 40-pin QFN package, mainly for battery-powered speakers, Bluetooth/wireless/smart speakers and sound bars, conference speakers, multi-level channel/multi-room audio system and other applications.
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When designing battery-powered portable audio devices for consumer speaker applications, it is critical to maximize battery life and provide excellent sound quality while achieving a compact form factor and reducing system cost. MERUS™ multilevel switching technology from Infineon Technologies AG (FSE: IFX / OTCQX: IFNNY) is designed to reduce switching losses and achieve efficient audio amplification performance at both low and high output power, Brings significant advantages to such applications. This new IC family uses second-generation MERUS™ multilevel switching amplifier technology in a compact 40-pin QFN package, and is mainly suitable for battery-powered speakers, Bluetooth/wireless/smart speakers and sound bars, conference speakers, Applications such as multi-channel/multi-room audio systems.
The new IC series includes two models, MA2304DNS and MA2304PNS. Among them, MA2304DNS integrates a fully configurable digital signal processor (DSP), and MA2304PNS has a built-in audio controller with volume control function. Both devices feature second-generation multilevel switching Class-D audio amplifiers that operate inductor-free and provide a bridge-tied load (BTL) rated output of 2 x 37 W. Its supply voltage range (PVDD) is 10 to 20 V, which can provide high-fidelity sound quality. With its own five-segment voltage modulation, the idle power consumption is as low as 52 mW, so there is no need for complex dynamic track tracking systems. With idle power consumption one-fifth that of conventional Class-D audio amplifiers, the devices are ideal for battery-powered speaker applications, extending battery life and reducing battery unit cost.
The efficiency of the new IC series can reach more than 80% at low output power, which enables multi-channel products to have longer battery life and improve thermal management capabilities. The multilevel switching design relaxes the electromagnetic compatibility (EMC) requirements and enables non-inductive applications over the full power range at a lower cost. Compared with traditional two-stage and three-stage Class-D audio amplifiers, the new IC series accelerates time-to-market by reducing electromagnetic interference (EMI) without compromising audio quality and system efficiency. This lower and tunable EMI enables industrial designs in mains-powered multi-channel applications that would otherwise require heat sinks or traditional LC filters.
A high-order internal feedback loop ensures excellent audio performance with low total harmonic distortion (THD) and noise floor. Inductorless applications help to achieve minimal output filtering, avoiding the bulkiness of large inductors, which in turn reduces system cost without limiting output power. The highly configurable DSP integrated in the MA2304DNS can adjust the audio to make the sound quality more perfect, and adjust the actual speaker application through equalization, limiting and similar functions. The MA2304PNS provides simpler volume control functions and audio controllers for systems utilizing an application processor or a connection processor for audio processing.
Availability
The 2 x 37 W second-generation multilevel Class-D audio amplifier family includes the MERUS MA2304DNS and MA2304PNS models, which operate inductor-free and come in a QFN 6 x 6 mm² package. The series is available for order now. For more information, please visit www.infineon.com/merus.
About Infineon
Infineon Technologies AG is the world's leading provider of semiconductor solutions, dedicated to making life easier, safer and more environmentally friendly. Infineon's microelectronics technology is the key to a bright future. Infineon employs approximately 50,280 people worldwide and generated revenue of approximately EUR 11.1 billion in fiscal year 2021 (ended September 30). Infineon is listed on the Frankfurt Stock Exchange (symbol: IFX) and on the OTCQX International Premier (symbol: IFNNY) in the United States.
Infineon China
Infineon Technologies AG officially entered the Chinese mainland market in 1995. Since the establishment of the first company in Wuxi in October 1995, Infineon's business has grown very rapidly. It has about 2,600 employees in China and has become an important driving force for Infineon's global business development. Infineon has established a complete industrial chain covering R&D, production, sales, marketing, technical support, etc. in China, and has carried out in-depth cooperation with domestic leading enterprises and colleges and universities in sales, technology R&D, and personnel training. Cooperation.
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