TPS54478: What's the gate capacitor of high-side and low-side FETs of buck converter inside?

Qian Chen

Part Number: TPS54478

Hello,

To calculate the power dissipation, one customer is asking for the gate capacitance of high-side and low-side FETs of buck converter inside.

Can someone provide this information?

Thanks

0 JohnTucker over 7 years ago

Hi Qian,
Generally that information is not available. I can ask for it, but it may take a long while to retrieve.

0 Qian Chen over 7 years ago in reply to JohnTucker

Hi John,

Thanks for quick reply.
I will reply to customer first. Will let you know if they do need this information.

Thanks
Qian

0 JohnTucker over 7 years ago in reply to Qian Chen

For high side FET you can use 696 pF. For low side FET you can use 667 pF.

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