TPS62810-Q1: Webench simulation

Milos Milesevic

Part Number: TPS62810-Q1

Hello,

I have a few question about model of TPS62810QWRWYRQ1 in webench. In datasheet of this element is written that if pin COMP/FSET is tied to ground and if at output of device is small capacitance that the switching frequency will be 2.25 MHz (internally set) and that compensation will be as good as possible.

We tried that we 8K06 ohms resistor connected to COMP/FSET and we get 2.23 MHz switching frequency and good compensation but we would like to remove this resistor and when we tried to connect this pin to ground (via 0 ohms resistor) we get that the switching frequency is infinityHz.

Is there a problem with model of device and can we do this? Will compensation be better with resistor connected to this pin?

Also, can we expect and when a Start-up simulation option for this model?

Thanks in advance and looking forward to your reply!

Best regards,

Miloš

over 2 years ago

+1 Dorian Brillet de Cande over 2 years ago

TI__Genius 14876 points

Hello Milos,

On the left hand-side of the Webench Model you can find a selectable "Compensation settings option". There you can find the following option : Compensation Setting 1 tied to GND.

See below,

Could you try again your experiment and let me know if you have any questions ?

Thanks a lot!

Regards,

Dorian

+1 Milos Milesevic over 2 years ago in reply to Dorian Brillet de Cande

Prodigy 20 points

Thanks!

I have tried this and there is no more problem with this setup. Works great.

Kind regards,

Miloš

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TPS62810-Q1: Webench simulation