Part Number: PMP4478 hello to all and TGIF.
we are looking for the datasheet or at least technical details of the transformer in the BOM fiel provided on the TI site for the PMP4478
no info is provided and the manufacturer wont reply to us, we tried…
Part Number: PMP4478 Other Parts Discussed in Thread: UCC28740 , LM5021 Hi to all and thank you in advance for your support.
We have the design of the uCC xxxx smps as per your schemtics Due to some noise at 400Khz we would like to remove valley skipping…
Part Number: PMP4478 Other Parts Discussed in Thread: UCC28740 , HI to all,
We have slightly modified the design .
The RCD snubber was modified (we used 20k resistance) and output filter as well . (higher inductor value and more capacitance) One issue…
Part Number: PMP4478 Hello again,
we have a related question.
We changed the Mosfet from your schematics to PN: STL11N65M5 with a RDSon of 0.47R. We want to ask if we need to change the R4 and R5 values.
Second question is , do you advise to…
Part Number: PMP4478 Hi to all,
We finalized our QR PSU based on your schematic. From the file attached you can see that switching is not happening in the "valleys" as it should. What do we have to do to make it so.
thank you for your reply.
Andre…
Part Number: PMP4478 Other Parts Discussed in Thread: UCC28740 hi to all
We have successfully build our first proto of the PSU...however we have a problem with the feedback circuit We are using very low esr capacitors for the PI filter and we are observing…
Part Number: PMP4478 Other Parts Discussed in Thread: UCC28600 hello to all,
we are designing a PSU based on the PMP4478
can you help us chose the R and C in the RC snubber of the MOSFET?
thank you
Andre
