--- title: "ROHM 推出用於可穿戴設備的超小型無線電源芯片組" type: "News" locale: "zh-HK" url: "https://longbridge.com/zh-HK/news/284330087.md" description: "ROHM 株式會社推出了一款新的超小型無線電源 IC 芯片組 ML7670 和 ML7671，專為智能戒指和手環等可穿戴設備設計。該芯片組採用 NFC 技術，能夠在 2.28 x 2.56 x 0.48mm 的小型外形中實現高效的電力傳輸。它在 250mW 時實現了最高 45% 的電力傳輸效率，目前已進入大規模生產，應用於 SOXAI RING 2 等設備。該芯片組符合 NFC 論壇標準，增強了其在無線電源生態系統中的兼容性" datetime: "2026-04-28T07:00:00.000Z" locales: - [zh-CN](https://longbridge.com/zh-CN/news/284330087.md) - [en](https://longbridge.com/en/news/284330087.md) - [zh-HK](https://longbridge.com/zh-HK/news/284330087.md) --- # ROHM 推出用於可穿戴設備的超小型無線電源芯片組 , /PRNewswire/ -- ROHM Co., Ltd. has developed a wireless power supply IC chipset consisting of the receiver (ML7670) and transmitter (ML7671) compatible with Near Field Communication (NFC) technology for compact wearables such as smart rings and smart bands. ML767x chip set: https://www.rohm.com/products/power-management/wireless-power?page=1&SearchWord=ml767#parametricSearch Figures: Product features https://cdn.kyodonewsprwire.jp/prwfile/release/M106254/202604217802/\_prw\_PI1fl\_5G9aZOC5.jpg The smart ring market has seen rapid growth in recent years. However, for extremely small ring-shaped devices worn on the finger, wired charging is impractical, while the conventional Qi wireless charging standard is difficult to implement due to constraints such as coil size. In response, NFC-based charging, which operates at the high-frequency 13.56MHz band that enables antenna miniaturization, is attracting increased attention, with adoption accelerating in next-generation wearables. This new chipset builds on the proven receiver (ML7660) and transmitter (ML7661). The maximum power transfer is specified at 250mW, while peripheral components such as the switching MOSFETs required to supply power to the charging IC are built in. The result is a solution optimized for both mounting area and power transfer efficiency in the power class demanded by compact wearable devices. Figures: Comparison of power receiver IC features and application examples https://cdn.kyodonewsprwire.jp/prwfile/release/M106254/202604217802/\_prw\_PI2fl\_t3V77HE4.jpg The ML7670 power receiver IC achieves a maximum power transfer efficiency of 45% in the 250mW low output range -- all in an industry-leading form factor of just 2.28 x 2.56 x 0.48mm. What's more, all firmware required for wireless power delivery is embedded directly within the IC, eliminating the need for a host MCU. Compliance with NFC Forum (WLC 2.0) enables power transfer while maintaining compatibility with existing devices, positioning the chipset as a core element in the expanding NFC wireless power ecosystem. Figures: Lineup table https://cdn.kyodonewsprwire.jp/prwfile/release/M106254/202604217802/\_prw\_PI3fl\_3aWk93R6.jpg The new chipset is already in mass production. Furthermore, it has been adopted in SOXAI RING 2, the latest model launched on December 10, 2025, by SOXAI Inc., the Japanese developer and distributor of the original sleep-monitoring ring SOXAI RING. \*The name "SOXAI" is pronounced "SOK-sai." SOXAI RING 2 Adoption Example: https://www.rohm.com/collaboration/soxai\_ring-2 Application Examples \- Smart rings \- Smart bands \- Smart pens \- Wireless earphones \- Other compact devices (i.e., wearables) News release: https://www.rohm.com/news-detail?news-title=2026-04-28\_news\_wireless-charge&defaultGroupId=false About ROHM: https://kyodonewsprwire.jp/attach/202604217802-O1-7Qv27crN.pdf Logo: https://cdn.kyodonewsprwire.jp/prwfile/release/M106254/202604217802/\_prw\_PI4fl\_2aE455Sk.jpg Official website: https://www.rohm.com/ View original content:https://www.prnewswire.com/news-releases/rohm-launches-ultra-compact-wireless-power-chipset-for-wearables-302754997.html SOURCE ROHM Co., Ltd. ### 相關股票 - [6963.JP](https://longbridge.com/zh-HK/quote/6963.JP.md) ## 相關資訊與研究 - [全球第 2 大 羅姆／東芝／三菱傳合併功率半導體事業](https://longbridge.com/zh-HK/news/280702653.md) - [從實驗室走向真實世界：穿戴裝置如何以長期大規模數據改寫醫學研究](https://longbridge.com/zh-HK/news/286981183.md) - [大同開拓北美電力基建 斬獲北美光儲能案場新客配電變壓器訂單](https://longbridge.com/zh-HK/news/286886870.md) - [官方力推算電協同 陸「虛擬電廠」迎多地開花](https://longbridge.com/zh-HK/news/286905934.md) - [長建：出售英國電力業務會否派特別息由各成員公司決定，無急切性出售其他資產](https://longbridge.com/zh-HK/news/287059003.md)