Cost-Optimized Reciever IC for Wireless Charging


Energous’ smallest IC DA2223 is designed for very small form factor applications like True-Wireless Stereo earbuds, hearing aids and wearables

Energous Corporation, the developer of WattUp wireless charging 2.0 technology, in partnership with Dialog Semiconductor, has introduced a DA2223 receiver chip in its family of integrated circuits (ICs).


With just 1.7mm x 1.4mm and less than 0.5mm thin dimensions, the DA2223 4-port RF-to-DC wireless power chip is the smallest RF rectifier IC in the Energous technology portfolio.

Depending on the device power level, a complete WattUp wireless power receiver can be realized using a single DA2223 IC coupled with a matching circuit made from two standard discrete components and a tiny 2mm x 3mm antenna, which itself can be formed using simple printed circuit board tracking.

IC compactness brings great revenue to the company
Compact DA2223 IC is designed for very small form factor applications such as true-wireless stereo earbuds, hearing aids and wearables. This small component can be used in small electronic device where coil-based wireless charging system is not practical. From the launch of this tiny chip, company is expecting to get good revenue.

Energous’ new DA2223 receiver IC:

  • Features four RF-to-DC rectifiers, allowing the connection of up to four antennas for optimal freedom-of-placement while charging, or the pairing of rectifier paths for increased power
  • Supports dual frequencies (915 MHz or 5.8 GHz)
  • Leverages the 12-pin WLCSP (Wafer Level Chip Scale Package), which offers customers flexibility in integration; max dimensions: 1.69 mm x 1.39 mm x 0.485 mm, 0.4 mm pitch
  • Complements the Energous portfolio of IC solutions, including the fully integrated WattUp power transmitter IC (DA4100) and the wireless power RF-to-DC receiver IC (DA2210)
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“DA2223 expands the existing portfolio of WattUp wireless charging ICs, providing a comprehensive chipset for customers to innovate with,” said Mark Tyndall, senior vice president corporate development and strategy, and general manager, Emerging Products Business Group, at Dialog Semiconductor. “The WattUp chipset is custom-built and cost-optimized for both at-contact and over-the-air RF-based wireless charging, and with the addition of this latest receiver IC, we are able to broaden the market reach into even smaller products.”

Stephen R. Rizzone, president and CEO of Energous Corporation said – “Partnered with Dialog Semiconductor, we continue to innovate turnkey solutions that increase our competitive separation from older, first generation coil-based solutions. Energous and Dialog are leading the advancement of next generation wireless power technology and paving the way for the global build out of the wireless charging 2.0 ecosystem.”



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