In recent years, gallium nitride power devices have been widely used in the consumer power supply market by virtue of their high frequency, high efficiency and low heat generation, thus accelerating the upgrading and iteration of traditional power accessories. However, at present, the large-scale commercial use of high-pressure gallium nitride power devices in the field of fast charging is mainly high-pressure gallium nitride power devices, and the application scenario is switching power supply, and in the field of vehicle chargers, charging treasures, wireless chargers and other products, gallium nitride has almost no mass production applications.
Charging head network recently learned that the industry's well-known power chip brand Zhirong Technology has developed a new car charger solution based on gallium nitride power devices, which not only supports a maximum power output of 140W, but also is equipped with two USB-C interfaces, filling the gap in the gallium nitride car charging market.
Zhirong this set of 140W dual C port gallium nitride car charging scheme only uses a PCB board, its structural principle is consistent with the traditional fast charging car scheme, the left and right sides are set up with a solid capacitor for filtering, and the center of an inductor uses a heat shrinkable tube to wrap the insulation. Next to the inductor are the main control chip of the car charge and two gallium nitride power devices. The two USB-C interfaces at the output are arranged side by side, and a VBUS switch is provided, and the overall material is very simple.
This set of 140W dual C-port Gallium nitride car charging main control chip using Zhirong's latest release of SW3556. The chip supports dual USB-C port buck output control, built-in synchronous buck converter supports 7A high current output, also built-in a variety of fast charging protocols, and supports dual-port power blind plug and independent current limiting. It is worth mentioning that the chip supports gallium nitride switch tubes, which can achieve a smaller volume and higher efficiency.
Zhirong SW3556 is a synchronous rectification buck topology, supporting 40V input, built-in synchronous rectifier buck controller, with the use of silicon MOS or gallium nitride switch tube, inductance capacitors and other simple peripheral devices, you can achieve 140W high-power output. The built-in buck controller switches at 125KHz and supports operation in PFM/PWM mode to optimize conversion efficiency.
In addition, the Zhirong SW3556 supports pin external resistors to configure output power and dynamic power distribution, eliminating the need for an external microcontroller when developing multi-port fast charging source products, so as to achieve a more streamlined peripheral and reduce costs. Suitable for car chargers, multi-port chargers, plug-ins and other product areas.
Two external Gallium Nitride power devices are from Innosyco and are both INN040W040A. This is Innosyco's latest enhanced gallium nitride power device, with a withstand voltage of 40V and a conductivity of only 4mΩ, in a very small package of FCSP 2.6 mm x 1.6 mm, which will be upgraded to a QFN package to improve the solderability of the device. Suitable for high-frequency DC-DC power conversion, RF, computer power supply, mobile power supply, motor drive and other fields.
Charging head network learned that Innosec INN040W040A is based on the industry's leading 8-inch production and processing technology, which is also the first advanced process gallium nitride power device on the market, and Innosecco is also continuing to optimize and upgrade the device, and the follow-up will use QFN packaging, which can further improve the solderability of the device and improve the reliability of the finished product.
Charging head net summary
With the large-scale commercialization of gallium nitride fast charging technology, the traditional large-sized power adapter is gradually replaced by a small and portable gallium nitride fast charger, which improves the user experience. However, in the DC-DC power supply market, the current power devices are still dominated by silicon MOS, and the application of gallium nitride power devices is very small.
Zhirong 140W dual C-port gallium nitride car charging solution is the industry's first 100-watt DC-DC application, filling the gap in the field of DC-DC fast charging of gallium nitride power devices. With the third generation of semiconductor power devices, this autocharging solution can achieve higher conversion efficiency and power density.
For more product information, you can contact Zhirong Technology or agents.