Richardson RFPD offers GaN audio Class D eval boards from GaN Systems

Evaluation boards for Class D audio systems by GaN Systems are available from distributor Richardson RFPD, an Arrow Electronics company. The distributor supplies and offers full design support capabilities for the boards.

The new GS-EVB-AUD-xxx1-GS GaN-based evaluation board platform provides an excellent reference design for implementing a high-performance, low-cost audio system. The Class D amplifier and companion power supply designs are optimised for sound quality, thermal performance, size and cost.

According to GaN Systems, GaN E-HEMT (high electron mobility transistor) fast switching, low output capacitance (Coss), and zero reverse recovery charge (QRR) enable a new level of performance for Class D audio amplifiers.

Key features of the two-channel Class D amplifier include multi audio signal inputs,

bridge-tied load output, option to switch between open-loop and closed-loop designs with optimised DSP control of each configuration and high performance audio.

They operate at 200W per channel (eight Ohm) and 300W per channel (four Ohm). They also has a minimum 108dB signal noise ratio (SNR) and dynamic range and less than 0.01 per cent THD+N (eight Ω, 1W) and ±0.5dB frequency response (eight Ohm). They operate at 96 per cent efficiency and exhibit reduced thermals, adds Richardson RFPD.

The companion switch mode power supply (SMPS) is a complete audio LLC SMPS with universal AC line input and is designed for easy integration with a GaN amplifier. It has a common-mode AC filter and 400W continuous, 550W peak power output from a ±32V DC dual rail output. No heatsinking and no cooling is required and the high efficiency SMPS exhibits 40 per cent loss decrease. The design of the SMPS is EMI/EMC-friendly, adds Richardson RFPD.

Richardson RFPD is an Arrow Electronics company. It specialises in the RF, wireless, IoT and power technologies markets and has relationships with many of the industry’s top radio frequency and power component suppliers.

Richardson RFPD’s worldwide design centres and technical sales team can provide comprehensive support for designing components or engineering complete solutions as part of a customer’s go-to-market strategy, from prototype to production.

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