UCC28950: UCC28950 uses optocouplers isolation

user6004348

Part Number: UCC28950
Other Parts Discussed in Thread: UCC3895, , UCC39002

HI sir

Because customers require that our high-power products must be added to the isolation scheme

Can the feedback circuit of UCC28950 (design of 3 pins of EA+, EA-, and COMP) be designed in the form of optocoupler isolation? similar to that of UCC3895 (design of 3 pins of EPA, EPN, EAOUT), or is there any circuit need be modified? Improve it?

TKS

over 3 years ago

+1 JCHK over 3 years ago

TI__Guru 50190 points

Hi,

Our PMP8086 reference design shows an example of how to use an optocoupler to provide isolated feedback.

I hope this helps to answer your question.

0 user6004348 over 3 years ago in reply to JCHK

Intellectual 410 points

HI sir

may i ask you another question?

Designs like the PMP8086 use optocouplers to provide isolated feedback, we would like to add the UCC39002 to share the current

Do you have a reference example circuit?

0 JCHK over 3 years ago in reply to user6004348

TI__Guru 50190 points

Hi, sorry I missed this one can you share a block diagram showing what you are trying to do? We also have PMP8906 which is another example of how to use the UCC39002.

Is this closer to what you are looking for?

PMP8906 REVB SCH 02-28-2013.pdf

PMP8906 REVB TestResults.pdf

PMP8906 REVB BOM 02-28-2012.pdf

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UCC28950: UCC28950 uses optocouplers isolation