TPS63020 and TPS82740A schematic review

roger karam

Other Parts Discussed in Thread: TPS63020, TPS82740A

Hello

please review my schematic do I need to post to different forum for the wireless charger review?

I was able to insert the schematic only use internet explorer, but I can not see it inside the body of the box I am typing in!

so not sure I will also try to attach a pdf.

thanks

roger

over 10 years ago

0 Chris Glaser over 10 years ago

TI__Guru**** 150870 points

Please read the ground rules post at the top of this forum for tips on better titles for your posts. Yes, you need to also post in the wireless charger forum.

On the TPS82740, it looks like you didn't connect the GND pin. As well, you don't need nor do we recommend 22uF on Cout. The D/S recommends a maximum of 10uF on the output.

On the TPS63020, I'm not finding your inductor. That series looks too small for a 4A device like the TPS63020.

0 roger karam over 10 years ago in reply to Chris Glaser

Prodigy 60 points

Thank you Chris.
I got the 3 x 22uF caps from the Ti webbench tool, will change to 10uF.

0 Chris Glaser over 10 years ago in reply to roger karam

TI__Guru**** 150870 points

The 3x 22uF on the TPS63020 are correct. Actually, the D/S recommends 4x 22uF. You don't need any Cout for the TPS82740A as it's inside the device.

0 roger karam over 10 years ago in reply to Chris Glaser

Prodigy 60 points

hi Chris
is the PSsync Pin going to GND directly or Via the 0.1uf sharing that with VINA AND EN?
i believe webbench showed me a direct GND but the datasheet shows PSSYNC to cap...

thanks
roger

0 Chris Glaser over 10 years ago in reply to roger karam

TI__Guru**** 150870 points

You can connect it either way as explained in the D/S. Which way depends on your application.

Power management

Power management forum

TPS63020 and TPS82740A schematic review