UCC28730-Q1: Schematic review

Akshar Gandhi

Part Number: UCC28730-Q1
Other Parts Discussed in Thread: UCC24650

Hi team,

The customer in the linked e2e thread has shared their schematic fo review, kindly provide the comments for the same.

The linked e2e thread: https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1337944/ucc28730-q1-dc-dc-psu-design

The schematic:

Flyback_28730.pdf

Thank you,
Akshar Gandhi

4 months ago

0 Harish Ramakrishnan5 4 months ago

TI__Mastermind 22245 points

Hi Akshar,

Thank you for reaching out.

The schematic looks fine.

The section of circuit to limit current into Vs pin might not be needed. It is only needed when the current exceeds 1.2mA.

Also EMI section is not there. I have already reviewed the calculator in the other post.

Regards,

Harish

0 Akshar Gandhi 4 months ago in reply to Harish Ramakrishnan5

TI__Prodigy 660 points

Hi Harish,

Thank you for the comments.

The customer requires a wake-up IC similar to UCC24650 on the secondary side to reduce overall output capacitance. Do we have a replacement there that is AEC-Q100 qualified, or any workaround for the same.

Thank you,

Akshar Gandhi

0 Harish Ramakrishnan5 4 months ago in reply to Akshar Gandhi

TI__Mastermind 22245 points

Hi Akshar,

There is no auto qualified IC or proxy to this feature.

Thank you

Regards,

Harish

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UCC28730-Q1: Schematic review