CSD18533Q5A: ψjt

Kuramochi Tadahiko

Guru 28705 points

Part Number: CSD18533Q5A

Hi,

How much is the ψjt of CSD18533Q5A?

Best Regards,
Kuramochi

over 2 years ago

0 John Wallace1 over 2 years ago

TI__Mastermind 24455 points

Hello Kuramochi-san,

Thank you for promoting TI FETs at your customers. TI does not provide ψjt thermal parameter for our FETs. We only provide thermal resistance values, RθJC (bottom) and RθJA, in the FET datasheet. We have done some thermal simulations and the typical value of RθJC (top) for the CSD18533Q5A is 18°C /W.

0 John Wallace1 over 2 years ago in reply to John Wallace1

TI__Mastermind 24455 points

Hello Kuramochi-san,

Let me also point you to the blog in the link below on how TI specs thermal impedance.

http://e2e.ti.com/blogs_/b/powerhouse/archive/2015/04/25/fet-datasheets-demystified-part-1

0 John Wallace1 over 2 years ago in reply to John Wallace1

TI__Mastermind 24455 points

Sorry, wrong link. Try this one:

http://e2e.ti.com/blogs_/b/powerhouse/archive/2016/06/10/understanding-mosfet-data-sheets-part-6-thermal-impedance

0 Kuramochi Tadahiko over 2 years ago in reply to John Wallace1

Guru 28705 points

Hi John-san,

Thank you for your help.

I have an additional question.

How much temperature was Rθjc(top) of CSD18533Q5A measured?

Best Regards,

Kuramochi

0 John Wallace1 over 2 years ago in reply to Kuramochi Tadahiko

TI__Mastermind 24455 points

Hi Kuramochi-san,

Thanks again for your interest in TI FETs. The Rθjc(top) was not measured. It is from a simulation. I don't have the details of the simulation - just the estimated value of Rθjc(top).

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CSD18533Q5A: ψjt