Part Number: PMP8757 Hi,
What is the transformer specifications (with turns ratio) used for T1 in PMP8757? Primary Turns=?
Secondary Turns=?
Aux Turns=?
Regards,
Balaji.V
Hi Yogendra,
The schematic values are a bit difficult to read. Any capacitance on the VS pin can make it difficult for the controller to work. This should be removed.
Can you share scope plots of VDD, VS, DRV, and CS?
We have a reference design PMP87…
Other Parts Discussed in Thread: PMP8757 I am looking for gerber files for the PMP8757 reference design. Are the available?
Thanks for your help.
Regards,
John
Other Parts Discussed in Thread: UCC28700 , PMP8757 Hello
Do we have solution to meet below customer requirement? Thank you.
AC/DC
--Isolator/Non-Isolator
--input: 90V to 265V (AC)
--Out: 5V/0.6A (DC)
BR
Patrick
Robin,
Thanks for your questions. I can't wait to see your innovation! I hope you will share with the community here when available.
PSR flybacks like UCC28700 and UCC28704 are typically used in AC/DC mobile chargers and tablet/notebook adapters…