# Fifth Lichuang Electronic Design Competition# SiC-based PD fast charging

Note: * is required.

[Please fill in during the registration stage↓]
* 1. Self/team introduction: I am more interested in hardware design and still learning and exploring.
* 2. Briefly introduce the project: driving a SiC MOS to achieve high power density PD fast charging.

[Please fill in during the competition stage↓]
* 1. Describe the project details: The PD fast charging market based on gallium nitride has been very hot recently. It happened that a friend made a few SiC MOSs to play with, so I thought why not make one based on SiC What about PD fast charging equipment? This work adopts a secondary-side feedback scheme, uses flyback topology, and works in QR mode.
* 2. Describe the challenges faced by the project and the problems solved: ① SiC-MOS driving method; ② Take advantage of SiC and improve the system Efficiency
* 3. Describe the key points involved in the hardware and software parts of the project: ① Because the SiC-MOS in hand is a normally connected device, we decided to equip a lower tube with a cascode structure to achieve the purpose of driving SiC by driving the lower tube. . ②: Design the transformer so that the module works in quasi-resonant mode to reduce switching losses. ③: The secondary uses synchronous rectification technology to reduce conduction loss.
* 4. Project material list display
* 5. Upload project pictures
          5.1. Print the competition logo picture on the PCB. If not, you will be deemed to have given up the competition! [WeChat picture_20200920213729.jpg]           5.2. Other pictures of the project! [WeChat picture_20200920213712.jpg ] * 6. Demonstrate your project and record it as a video for upload
          6.1, Video Upload Contest official website
          6.2, B station video title and link: The 5th Lichuang Electronic Design Competition: SiC-based PD fast charging [https://www. bilibili.com/video/BV1FD4y1Z7qV/](https://www.bilibili.com/video/BV1FD4y1Z7qV/)< br>
< br>
< span class="colour" style="color:rgb(170, 170, 170 )">< span class="size" style="font-size:12px">Notes: ①: Video requirements: Please shoot horizontally, with a resolution of no less than 1280×720, format Mp4/Mov, single video size Limited to 100M; ②: Video upload: Please upload to the official website of the competition and Station B ([www.bilibili.com](www.bilibili.com)) simultaneously. The top 10 most popular projects on Station B will receive cash rewards of 1,000-5,000 yuan. Others Upload the project to get a 100-yuan Lichuang mall no-threshold coupon; ③: Video title: The 5th Lichuang Electronic Design Competition: {Project Name}-{Video Module Name}; For example, the 5th Lichuang Electronic Design Competition: "Autonomous Driving" 》Project-Team Introduction. < /span>< /span>< br>
< br>
* 7. Is it published publicly for the first time: It is published for the first time and has never been published.
          7.1. If the project has been published or won an award before, please explain.
          7.2. If the project is optimized on the original basis, please explain the optimization part
* 8. Open source documents
* 9. References.

Click the link for more details: [https://www .szlcsc.com/go/dsxq](https://www.szlcsc.com/go/dsxq)