Unlocking the potential of its best-in-class energy MOSFET know-how, Infineon Applied sciences launched the MERUS 2-channel, analog enter, class D audio amplifier multichip module (MCM) MA5332MS, including a better energy and smaller footprint system to its MERUS know-how household. It’s a highly effective improve to its predecessor, providing the identical and even greater output energy than monolithic alternate options, and not using a heatsink and 50 p.c much less footprint.
Class D audio energy amplifiers supply a mixture of small measurement, low warmth dissipation, excessive integration, and wonderful sound high quality. Coming in a compact 42-pin QFN package deal, the brand new MERUS MA5332MS from Infineon integrates a dual-channel PWM controller, a high-voltage gate driver, and 4 low RDS(on) MOSFETs. Due to its very low RDS(on) class D output stage (24.4mΩ typical), it might ship 2x100W at 4Ω working completely heatsink-free or 2x200W at 4Ω with a small 8°C/W heatsink. In comparison with different single-chip options it is a significantly decreased measurement.
Within the 100-400W/channel vary, the MA5332MS is good for shopper merchandise together with all energetic audio system, soundbars, subwoofers, and mini-component techniques, all the best way to skilled audio functions in energetic studio displays, guitar amplifiers, aftermarket automotive, and marine audio amplifiers.
Audio builders will admire the truth that the MA5332MS provides differential or single-ended enter and a number of output configuration choices, single-ended (2x SE), bridge-tied load (BTL), and parallel single-ended (PSE), utilizing a single or cut up energy provide. Enabling an SE topology as a substitute for BTL permits for decreased bus capacitors and output low-pass filters.
As a highly-integrated MCM, the MA5332MS additionally integrates safety circuitry for capabilities comparable to over-current, over-temperature, and under-voltage safety with self-reset functionality. This on-chip safety circuitry saves the time to design safety utilizing exterior safety elements. Moreover, a brand new inner logic scheme to manage soft-start operation delivers an additional discount of click on and pop noise. Primarily based on its improved options, MA5332MS reduces BOM value and thermal administration issues, offering extra space for the economic design and delivering superior effectivity and low output distortion.
The MERUS MA5332MS class D audio amplifier multichip module might be ordered now in a PG-IQFN-42 package deal. Additionally accessible is the REF_MA5332BTLSPS reference board, a single BTL channel, 200W/ch (4Ω at 40V) class D audio energy amplifier for residence audio techniques. It includes a single BTL channel self-oscillating sort PWM for the bottom part rely, handy single energy provide and highest efficiency and strong design. The board demonstrates the right way to use the MA5332MS with a single energy provide.
Extra info is out there at www.infineon.com/ma5332ms and www.infineon.com/merus