The SC9625 chip, developed and designed by Southchip, has been successfully applied to the magnetic wireless charging technology of the Xiaomi Pad 6S Pro stylus, enabling Xiaomi to achieve mass production of the product
As is well known, the charging methods for terminal devices are mainly divided into wired and wireless charging. Wired charging technology is relatively mature, while wireless charging technology is also developing rapidly. Nowadays, there is not much difference between the power levels of wireless and wired charging. Moreover, wireless charging has freed users from the constraints of cables, making it a popular choice among consumers.
The traditional wired charging method for Pad styluses has many drawbacks, including poor portability, susceptibility to damage, limited range of use, unstable connections, and wear of charging ports. These issues severely affect the overall user experience and portability of the product, failing to meet modern users' demands for the convenience and flexibility of mobile devices. In contrast, magnetic wireless charging technology offers great convenience to users and enhances their satisfaction. However, many wireless charging products on the market currently suffer from low conversion efficiency and high standby power consumption. These issues directly impact the user experience, increase users' cost burden, and reduce the overall performance and competitiveness of the products. Therefore, to ensure the endurance performance of the product, there is a demand for wireless charging power management chips that are highly efficient and have low standby losses.
Southchip's 50W highly integrated wireless RTx-SC9625 product provides customers with a practical solution through its highly efficient and integrated wireless power conversion technology.
The SC9625 is a high-integrated and high-efficient single-chip wireless power receiver/transmitter IC (RTx). The SC9625 integrates a high efficiency synchronous fullbridge rectifier with ultra-low RDS to convert the AC power signal from a wireless transmitter to DC power and a programmable low-dropout LDO allowing for extremely high efficiency and system optimization. The SC9625 contains an industry-leading on-chip 32-bit MCU with extremely low standby power consumption and MTP memory offering great flexibility for system firmware update. As a receiver, it can deliver 50W (20V/2.5A) output power to the downstream charger system. As a transmitter, it can support up to 15W output power to other wireless receivers. The SC9625 is compatible to WPC Qi (v1.3) protocol and in support for propriety protocols. The device is available in an ultra-small 2.875mm x 4.035mm WLCSP-54 package.
