SiliconIntervention: Low-Level Efficiency Improvements in Class-D

Driven by the need to maximize battery life in portable devices, Class-D efficiency at low output levels is receiving greater attention. This is particularly important to achieve longer battery life in designs such as true wireless earbuds. Power optimized amplification is precisely the goal for Multilevel Class-D, and now there's also Fractal Class-D, a new technology developed by SiliconIntervention, a Canadian company formed in 2019 as the result of the pioneering research and development of its founder Martin Mallinson, the former Chief Scientist at ESS Technology.

LinearFlux, a mobile accessories company that specializes in battery packs and chargers, has been expanding its offerings with true wireless earbuds for active lifestyles. Now, the company announced their new HyperSonic 360 TWS design that combines a MagSafe-compatible magnetic wireless charging battery case for a total of 360+ hours of playtime. The interesting design offers the advantages a fully-featured battery pack with capacity display, safely holding the earbuds while recharging.

Integrated Device Technology (IDT), a wholly owned subsidiary of Renesas Electronics Corporation, announced the availability of its new P9222-R wireless power receiver, the industry’s smallest and optimized for wireless charging cases used to charge true wireless stereo (TWS) earbuds, hearing aids and other small, battery-powered consumer devices. Unlike other available solutions, the P9222-R is cost-optimized, highly efficient, feature rich and proven in high-volume applications with major consumer electronics manufacturers.

Another company has launched a new attempt to break the full-wireless earbuds challenge. This time, French start-up PKparis launched the K’asq Bluetooth 4.1 stereo wireless earbuds, featuring the industry’s longest battery life: 5-hours on-the-go to listen to music or calls. The PKparis earbuds also combine high quality sound with up to -40% noise reduction, anti-fall system and IP55 waterproof and a clever USB 2.0 chargebox providing 8 hours extra charge.