WPC’s Qi standard for medium power has attracted attention as a next-generation standard for inductive power transmission that will enable wireless charging of tablet PCs while allowing smartphones and other mobile devices to be charged up to 3x faster than the existing low power standard (5 W). In addition, a Foreign Object Detection (FOD) function is included to provide greater safety by detecting foreign metallic objects before power transfer to protect against possible damage due to overheating.
In addition to pioneering the development of a wireless power transmitter IC (BD57020MWV) compliant with the Qi medium power specification, ROHM has developed a reference design that is expected to not only facilitate the introduction of wireless charging in new applications requiring higher power, but also accelerate adoption in applications that can benefit from wireless charging.
ROHM plans to continue to provide safe, easy-to-use, end-to-end wireless power solutions, and is currently scheduled to receive Qi certification under the medium power standard for a reference design using the BD57015GWL wireless power receiver IC.
ROHM is the first supplier in the world to offer a reference design for medium power that has passed interoperability tests with more than 200 Qi-certified devices, and to have successfully acquired Qi certification under the medium power specification.
The BD57020MWV wireless power transmitter IC will begin sampling in December 2015.