LAPIS Technology, a subsidiary of ROHM, has developed a wireless power supply chipset with power up to 1W - ML766x

     Lambi Stone Technology Co., Ltd., a subsidiary of ROHM Group, has developed wireless power supply chipsets "ML7661" (transmitter) and "ML7660" (receiver) up to 1W for wearable devices.
     In recent years, there has been a high demand for improving the safety of small electronic equipment, especially small medical equipment, against electric shock. The wireless power supply does not require a power connector, and its sealed housing can improve waterproof and dustproof performance, so it can greatly improve the safety against electric shock when charging and sweating. Although there is a very popular Qi standard*2 in the field of wireless power supply, the power supply is large, up to 15W, but its system size including antenna size and chipset is also large, so it is difficult to install in wearable devices. middle.

     In response to this problem, Lambishi Technology, a subsidiary of ROHM Group, uses 13.56MHz as the wireless power supply frequency band to develop a wireless power supply chipset "ML763x" with built-in wireless power supply function and non-contact communication function, and the power supply is 200mW. Mass production will begin in June 2020. Since the product was put into the market, it has been highly praised by users. At the same time, users hope that the chipset can be used in wearable devices with large battery capacity such as wrist blood pressure monitors, smart watches and hearing aids, and the voices that can increase the power supply are also increasing. Come higher. In this context, Lambishi Technology has developed a new set of products with a small size and a power supply of up to 1W, which further expands the range of applications that can be equipped with wireless power supplies.

     The new product has built-in control circuits required for power transmission and reception, without the need for an external microcontroller. At the 1W power supply level, the industry's ultra-small system size is achieved. The new product is very suitable for wearable devices with large battery capacity that need to be worn for a long time, such as wrist blood pressure monitors, smart watches, hearing aids, etc. In addition, since the new product uses a high frequency band of 13.56MHz, it also supports contactless communication of the near field communication standard "Near Field Communication (NFC)*1" with the same frequency. Because of wireless power and communication with 1 chipset, in devices with rotating mechanisms that limit design flexibility in wired power systems, such as in industrial equipment, computer cooling fans, and torque in electric bicycles In applications such as sensors, it helps to improve product designability and design flexibility.