By Alex Pluemer, contributing writer
Energous Corp. builds on its WattUp wireless charging 2.0 technology with the launch of its DA2223 receiver chip. Measuring 1.7 × 1.4 mm and less than 0.5 mm thick, the four-port RF-to-DC wireless power chip is suited for wireless charging solutions in smaller electronic devices. Touted as the smallest RF rectifier IC in the company’s product portfolio, the DA2223 chip’s target applications include True-Wireless Stereo earbuds, hearing aids, fitness trackers, and wearables.
The DA2223 IC features four RF-to-DC receiver paths, enabling the connection of one to four antennas depending on power required and available antenna area. Multiple antennas can be employed to increase received power for applications with a larger area. The receiver IC also provides external RF input matching for greater flexibility and RF-to-DC conversion optimization. DC outputs are internally clamped to limit the output voltage within the range of most DC regulators.
Key features include:
- Four RF-to-DC rectifiers, enabling the connection of up to four antennas for freedom of placement while charging or to pair the rectifier paths for increased power
- Dual frequencies: 915 MHz or 5.8 GHz
- 12-pin wafer-level chip-scale package (WLCSP), simplifying integration
- Works in conjunction with other Energous IC solutions
A complete WattUp wireless power receiver includes a single DA2223 IC with a matching circuit using two standard discrete components and a 2 × 3-mm antenna. The small form factor makes it suited for use in small electronic devices in which a coil-based wireless charging system is not practical, said the company.
Learn more about Energous Corp.
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