手機晶片廠聯發科表示，多模無線充電解決方案MT3188目前已送樣，預計第3季將有商品化產品上市。

聯發科表示，MT3188不僅與現有的PMA及WPC感應式標準相容，也與A4WP的共振無線標準相容。

聯發科指出，消費者可將具無線充電功能的手機及平板電腦等裝置放置在無線充電墊上任何位置充電，一個充電墊也可同時為多個裝置充電。

聯發科MT3188目前已送樣客戶，預計第 3季將有商品化產品上市。

資料來源: 中央社/記者張建中 2014/2/25

Key features 

• Compatible with existing PMA and WPC inductive standards as well as emerging resonant wireless standard A4WP
• Ultra-compact design for smartphones, tablets and other consumer devices
• Highly integrated, with an optimized bill of materials that requires no external active components
• Supports out-of band communications in resonant mode (A4WP)
• Provides the option of in-band communications in resonant mode for applications where a Bluetooth transceiver is not available
• Operates stand alone or with Mediatek MT6595, MT6732 or other systems on a chip
• Sampling now, with first commercial devices expected in Q3 2014

“With resonant charging, MediaTek makes consumer lives better. The devices can be placed in any position on a resonant charging mat and one mat can simultaneously charge multiple devices with different power needs at their optimum rates,” said Mark Estabrook, Senior Director of Strategic Marketing at MediaTek. “Resonant charging also works through non-metallic materials, so there’s no need to remove a smartphone case before charging and the chargers can be built easily into furniture and vehicles.” 

MediaTek’s in-band communication technology for power control provides a simple and reliable way to add resonant wireless charging support to a whole host of consumer devices where Bluetooth transceivers may not be available for out-of-band communication, such as ebook readers, noise-cancelling headphones and even spare batteries.

MediaTek MT3188 requires no external active components and its highly-optimized bill of materials (BOM) is comparable to best-in-class WPC inductive solutions. The solution can be mounted on a mobile device’s main PCB or battery cover, and provides a programmable output voltage from 1.5V to 5V at 1.4A (7.0W maximum). MT3188 is powered wholly by the charger and works even with a completely discharged battery.

MediaTek is an active contributor to the wireless charging standards community, and is co-vice chair for resonant technology at PMA and a member of WPC. Mediatek is also a member of the Alliance for Wireless Power (A4WP) — a not-for-profit organisation that supports Rezence™ resonant charging technology.

MediaTek MT3188 is sampling now and expected to feature in commercial devices within Q3 2014.