Other Parts Discussed in Thread: UCC28950
Hi, Please suggest me the Circuit diagram for 3.3KW power Supply.
Input Voltage: 90-300V AC
Output Voltage (VOUT) : 84V 40A
Continuous Output Power (POUT): 3.3KW
Full Load Efficiency: 90- 95%
This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
Hello,
I found this 2 kW reference design in the UCC28951 product that may be helpful to you.
https://www.ti.com/tool/PMP8740
The following link will bring you to an application note that goes through the step by step design process using the UCC28950/1 devcies.
There is a link to an excel file that will do the calculations for your design.
https://www.ti.com/lit/pdf/slua560
We also have Webench design tool. You just input the input and output power requirements and the tool will generate a schematic and bill of materials for your design. Just go to the UCC28951 product page and search on Webench. https://www.ti.com/product/UCC28951
Regards,
As I seen the reference design link i.e. https://www.ti.com/tool/PMP8740, this design is only for 600KW power supply, but my requirement is 3.3KW. Also as per my requirement I haven't found the Schematic and BOM in Webench design page. No excel file is available in https://www.ti.com/lit/pdf/slua560.
Hello,
The link to the excel file is in in the application note. Just needed to click on excel design tool in blue text. I have provided the link below as well to the same excel file.
https://www.ti.com/lit/zip/sluc222
Regards,
Thanks for the link, As I already mentioned my project specifications. When I filled the data in excel sheet, Ls calculated is -0.33uH. Kindly check the excels sheet which i shared you in personal message. If any changes kindly let me know..
Hello,
If Ls is negative you don't need it to achieve ZVS. You can use the leakage inductor for this.
I would still leave a place h older for it just in case. This is because your a selecting Ls base on theoretical switch capacitance. In your actual design you may end up needing it.
Regards,
Mike