ROHM: Wireless charging urgent need to improve low efficiency and high wear and tear of the two major issues

In recent years, mobile devices such as notebook computers have succeeded in charging up to 100W, and the introduction of USB PDs is also rapidly gaining popularity. There is also a growing market demand for both the wired / wireless charging methods.

ROHM Taiwan Design Center Deputy Li Kunfang

However, to meet the large power requirements of USB PD, the system must add buck-boost function, on the other hand, if two charging modes are used at the same time, charging IC and external components need to be separately installed and controlled by the microcontroller Charging switch, these have become development and design obstacles.

ROHM has been committed to the development of USB PD, by quickly grasp the market pulse, the first to develop a new charging IC, which can correspond to two kinds of charging.

Li Kunfang, deputy director of ROHM Taiwan Design Center, pointed out that ROHM has developed charging ICs capable of supporting two charging modes for mobile devices equipped with USB Power Delivery (USB PD) such as notebook computers, smart phones and mobile power supplies, including BD99954GW and BD99954MWV .

BD99954GW / MWV is controlled by the use of step-down to generate 3.07V ~ 19.2V charging voltage, while supporting the USB PD system charging IC. ROHM alone developed technology that can support two charging methods, and without a microcontroller that is Charge switchover, and supports the most popular USB BC1.2 charging standard today, enabling multiple charging methods such as USB charging and wireless charging, which helps to construct a more convenient charging environment.

Kun-Fang Lee believes that with the adoption of first-line mobile phone manufacturers, wireless charging technology is bound to be more popular in more mobile phones among the more immediate priority is to be able to effectively improve the charging efficiency is low, and high energy consumption two major issues.