Infineon integrates Merus class D multi-level amplifier in Raspberry Pi HAT board
Claimed to be the industry’s first fully self-contained Raspberry Pi audio amplifier hardware attached on top (HAT) board, The Kit_40W_AMP_HAT_ZW offers high definition audio at boom box power levels in a small form factor.
Infineon’s proprietary multi-level technology ensures minimum size and consumption, power efficiency and HD audio quality for Raspberry Pi users and makers designing active speakers with wireless music streaming.
The Kit_40W_AMP_HAT_ZW is compatible with Raspberry Pi Zero W and Raspberry Pi 3 and 4. It leverages the Merus multi-level class D amplification enabled by the Merus MA12070P amplifier. The D amplification technology allows for filter-free amplifier design that does not need to use a filter coil at the output filter. According to Infineon, this “significantly” reduces the bill of materials cost and enables PCB area reduction. The board provides up to 40W instantaneous peak power output at 4.0 Ohm in a small form factor. The board is claimed to offer best-in-class efficiency and playback time up to 20 hours with a ~6700mAh power bank. There is no need for additional power supplies, only a single 5.0V/2.5A USB power supply is required for both the Raspberry Pi and the HAT.
The board is compatible with the main Linux distributions such as Raspbian, Volumio, moOde Audio or JustboomPlayer, for a quick and easy audio system. Dual channel, bridge-tied load (BTL) or single channel, parallel bridge-tied load (PBTL) configurations for multi-room, TWS, or sub woofer applications are also possible.
The Raspberry Pi audio HAT audio amplifier board is available now.