Li Kunfang, vice president of ROHM's Taiwan Design Center, said that with the increasing popularity of wireless charging after the announcement of the iPhone 8, users, at home, in coffee shops, commuting and so on, Different charging methods may be chosen due to different needs, and this trend poses a challenge for mobile device power development designers.
At present, notebook computers and other mobile devices have successfully achieved the charging power of 100W, the introduction of USB PD is also rapidly expanding, the market for both wired and wireless charging methods are also increasing the demand.However, to meet the USB PD On the other hand, if two kinds of charging modes are used at the same time, charging ICs and external components need to be additionally installed, and a charging switch is controlled through a micro-controller (MCU) Many manufacturers will be hindered in the design of goods.
ROHM recently released a new battery charging ICBD99954GW / MWV, equipped with a charger to read the function, so no microcontroller to charge switch.Furthermore, because there is no need for external components to correspond to two kinds of charging mode, there is no need to install transistors Or resistance, so the required installation area is smaller, thus reducing the design burden.At the same time, ICBD99954GW / MWV can take advantage of step-up and step-down control 5V ~ 20V range of transformer to charge.In addition, in addition to support USBPD, Supporting the USB BC1.2 specification, which is dedicated to a wide range of charging needs, ROHM will continue to develop various solutions in the charging area in response to changes in the battery and charging method of mobile devices in the future.