Semiconductor manufacturer ROHM has developed charging ICs - BD99954GW and BD99954MWV that support two kinds of charging methods for mobile devices equipped with USB Power Delivery (USB PD) such as notebook computers, smart phones and mobile power supplies.
The BD99954GW / MWV is a charge IC that generates 3.07V ~ 19.2V by controlling the step-up / down voltage and supports the most advanced USB PD system charging ICs. The ROHM's proprietary technology supports two charging modes without the need for micro The controller can be charged switch. In addition, it also supports the most popular USB BC1.2 charging standard today, USB charging can be easily achieved, wireless charging * 2) and other multiple charging methods to help build a more convenient charging environment.
The product has been sold in the sample in October 2017 and is scheduled to start mass production on a monthly basis of 500,000 units by January 2018.
Compared with the traditional circuit block diagram, ROHM's new products BD99954GW, BD99954MWV has the following characteristics, help to build a more convenient charging environment.
The first can correspond to two kinds of charging
Because equipped with a charger to read the function, so no microcontroller to charge switching.Moreover, because no external components to correspond to two kinds of charging mode, do not need to install the transistor and resistor, so the required installation area is more Small, significantly reduce the design burden.
With the buck-boost control of the corresponding advanced USB PD system
For example, when charging a 2-cell battery (= 8.4V), the input voltage of 20V can be stepped down to 8.4V, and the input voltage of 5V can be regulated by the buck-boost control. Boost to 8.4 V. In addition, in addition to USB PD, it also supports the most popular USB BC1.2 specification, which can effectively respond to various charging needs.
Charging ICs Supporting Two Charging Methods - The BD99954GW and BD99954MWV are designed for mobile devices up to 100W such as notebooks, tablets, smartphones, mobile power, wireless audio, and battery-powered screens.