Providing wireless power and communication in a single chipset contributes to improved design flexibility in devices with rotating mechanisms that would normally be restricted by wired designs – such as industrial equipment, PC cooling fans, and e-bike torque sensors.
In recent years, there has been a growing need to improve the safety of compact electronics (especially small medical devices) against electric shock. A wireless power supply eliminates the need for a power cord, significantly improving safety during charging or sweating by increasing the waterproof, dustproof, and (electric) shockproof performance of sealed housings. However, although the Qi standard is widely used and can supply up to 15W, the system size which includes the chipset and antenna is also typically large, making it difficult to incorporate into wearable devices.
In response, ROHM Group company LAPIS Technology previously developed the ML763x chipset that utilizes the 13.56MHz frequency band to deliver 200mW of power and enable communication wirelessly. While this device was well-received by the market, there were calls for increased power to support wearables with large battery capacities such as wristband blood pressure monitors, smart watches, and hearing aids. ROHM’s latest chipset meets this need by providing a power capacity up to 1W in a compact form factor, expanding the application range.
Development Support
An evaluation kit is available that makes it easy to immediately begin evaluation of this new 13.56MHz wireless power supply chipset. ROHM supports the configuration of charging systems that meet various customer requirements. For example, tools for individual user settings from a PC, along with documents related to antenna design and adjustment, are available. For more information, visit https://www.lapis-tech.com/en/
Applications
- Medical wearable devices up to Class 2: Hearing aids, wristband blood pressure monitors
- Wearables: Smart glasses/watches
- Rotating equipment: Cooling fans, e-bike torque sensors
Availability
Samples available now; mass production April 2022
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