High input voltage flyback
Posted by: giorgioc
on
Hi,
I need to develop an isolated 5 W SMPS to be connected Line-to-Line on 3P 400 V main.
It means the rectified input voltage span is 450-650 V.
I can't find any reference design or discussion about.
Any help? Thanks in advance.
Comments
Hi,
One other option is to implement a stackfet configuration in your schematic.
I found a sample design using 3-phase input, please see link below.
https://www.powerint.cn/sites/default/files/forum/files/DI-124.pdf
Regards,
Nanoe
Hi,
Thank you for reaching us out.
Regarding your concern, unfortunately there is no reference design that I can provide for 3-phase input.
However, we do have a single IC that I could recommend that can handle this input voltage that you can use. Please see Innoswitch3-EP. This IC has a breakdown voltage of 900V, 1250V and 1700V.
To further help you, may I know, what is your output voltage and current?
Regards,
PI-Nanoe