By navigating our site, you agree to allow us to use cookies, in accordance with our Privacy Policy.

ROHM Develops New Wireless Power Supply Chipset

The ML7661 (transmitter) and ML7660 (receiver) eliminate the need for an external MCU by incorporating a control circuit required for transmission/reception, resulting in the industry’s smallest system size in the 1W class.

ROHM Group company LAPIS Technology has developed a chipset capable of providing up to 1W of wireless power for compact and streamlined wearable devices, and industrial smart, miniaturized and sealing solutions.

ROHM Wireless Power ChipsetThe ML7661 (transmitter) and ML7660 (receiver) eliminate the need for an external MCU by incorporating a control circuit required for transmission/reception, resulting in the industry’s smallest system size in the 1W class.

This makes it ideal for wearables with a large battery capacity designed to be worn for long time frames.

Typical products are wristband blood pressure monitors, fitness trackers, smartwatches, and hearing aids, for example. Moreover, the adoption of the high 13.56MHz frequency band enables the support for Near Field Communication (NFC).

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. 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.

But while it 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, smartwatches, and hearing aids.

ROHM’s latest chipset meets this need by providing a power capacity of up to 1W in a compact form factor, expanding the application range.

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 

Tags

Aishwarya Saxena

A book geek, with creative mind, an electronics degree, and zealous for writing.Creativity is the one thing in her opinion which drove her to enter into editing field. Allured towards south Indian cuisine and culture, love to discover new cultures and their customs. Relishes in discovering new music genres.

Related Articles

Upcoming Events