Ossia teams for 5.8GHz wireless power development kit

Ossia teams for 5.8GHz wireless power development kit

Business news |
By Nick Flaherty

Wireless power chip developer Ossia has developed a wireless power transmitter development kit using the EnerCera lithium-ion ceramic rechargeable batteries and low-current-consumption power supply chips from Torex Semiconductor.

Using radio frequency (RF) signals to transfer power over a 10m range supports maintenance-free IoT devices as it enables power supply to places where wiring presents difficulties and eliminates the need to replace batteries.

Ossia’s Cota wireless power technology uses the 5.8 GHz band for smaller receivers for sensors installed in places such as enterprise environments, retail, factories and warehouses. The development kit combines the Ossia Antenna that extracts radio frequency as power, EnerCera semi-solid state batteries that store the power and a power supply chip that supplies the stored power at an optimal voltage to a microcontroller or sensor.

“With features such as low resistance, high capacity, and long life, EnerCera batteries are an ideal energy storage device for WPT because it can efficiently charge the power transmitted via WPT and store it for long periods of time and provide high enough output to power MCUs and sensors. Combined with the power supply IC and Ossia’s WPT technology, we will promote the development and popularization of maintenance-free IoT devices powered by WPT using the 5.8 GHz band,” said Iwao Ohwada, Vice President, General Manager, Advanced Device Components Div., Electronics Business Group, NGK Insulators which supplies the EnerCera batteries.

“The Torex power supply ICs realize low consumption, high efficiency, and low noise, enabling EnerCera to be charged with zero waste by the power transferred via WPT. The micro DCDC series, integrating a coil and control IC, facilitates stable supply of power stored in EnerCera at an optimal voltage to MCUs or sensors, helping to make devices even more compact,2” said Tomoharu Yamamoto, General Manager, Product Planning & Overseas Sales Management HQs at Torex.

“Ossia’s Cota Real Wireless Power is uniquely suited for multiple battery applications. Charging batteries with wireless power changes the way companies can design products without needing to have easy access for frequent battery replacement. It is also an environmental benefit to reduce disposable battery waste. One Cota transmitter can power multiple batteries simultaneously, even while in motion, allowing for product innovation,” said Jennifer Grenz, Chief Revenue Officer at Ossia.


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