Power supply for HYPERPFS-2 PFS7325H
Posted by: fgomez
on
I need design the PSU to supply a PFS7325H. The component datasheet (pag 3) says " The SIGNAL GROUND pin must not be tied to the SOURCE pin". I've thougth to use a not isolated PSU based on LNK304D to generate the +12V required by PFS7325H, using as input the output rectifier.
After reading the note on page 3, I have doubts that this can be done. Is it necessary to use an isolated PSU to supply properly the PFS7325H ?.
Hi,
You don't have to use isolated power supply to supply Vcc to the PFS7325H. You can use LNK304DN and connect 12V+ to the Vcc pin of the PFS7325H and connect LNK304D Return to PFS output capacitor (Bulk Cap).
In that way you need not connected Ground pin to Source pin.
Regards,
PI-NANO