TPS92692-Q1: TPS92692 Sepic conveterter MOSFET Switching issue

Tanvir Fakir

Prodigy 20 points

Part Number: TPS92692-Q1

Tool/software:

Hi,

I am working on sepic conerverter design for below spcification.

Vin 8V to 16V

Vout 21V

Iout 0.75A

Fsw: 400KHz

i am checking MOSFET drain waveform from 8V to 16V. Till 13V VDS signal is ok. when i cross 14V VDS start to double switch again.

attached waveform for the same.

pls suggest what could be the problem in my design.

over 1 year ago

0 Hailee Xu over 1 year ago

TI__Genius 10140 points

Hi Tanvir,

Please share a complete schematic, currently it is only partial and not clear.

And what do you mean Vds-VIN voltage? please explain the waveforms, does the green line mean Vgate?

BR,

Hailee.

0 Tanvir Fakir over 1 year ago in reply to Hailee Xu

Prodigy 20 points

can i share through email as its confidential.

0 Tanvir Fakir over 1 year ago in reply to Hailee Xu

Prodigy 20 points

VIN is input supply voltage, VDS drain to source voltage (green line)

0 Hailee Xu over 1 year ago in reply to Tanvir Fakir

TI__Genius 10140 points

Hi Tanvir,

Yes, you can send it to me via email.

BR,

Hailee.

0 Tanvir Fakir over 1 year ago in reply to Hailee Xu

Prodigy 20 points

pls share your email ID

0 Hailee Xu over 1 year ago in reply to Tanvir Fakir

TI__Genius 10140 points

Tanvir, I've sent you the email, please check it.

0 Hailee Xu over 1 year ago in reply to Tanvir Fakir

TI__Genius 10140 points

Hi Tanvir,

Have you received my email? or do you have any progress about this issue? Thanks~

Hailee.

0 Hailee Xu over 1 year ago in reply to Hailee Xu

TI__Genius 10140 points

Hi Tanvir,

I will close this post, if you have any other question, please post a new one. Thanks!

BR,

Hailee.

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TPS92692-Q1: TPS92692 Sepic conveterter MOSFET Switching issue