TPS3430-Q1: Thermal resistance of Q1 and non-Q1

Hi Hirotsugu-san,

The -Q1 is a different design but with the same functionality.

Ben

Hi Ben,

I would like to know what is the difference in thermal resistance. Material, structure, die thickness, etc.

Best Regards,

Hi Hirotsugu-san,

The design itself is different.  As seen in the datasheet, the ESD rating for the -Q1 is higher than the non -Q1.

Ben

Hi Ben,

Is the die size of Q1 larger than non-Q1?

Hi Hirotsugu-san,

I cannot divulge any internal die information because it is confidential.  Also, I do not have accessibility to that information.  

Ben

Hi Ben,

I thought that the die size would change if the ESD rating changed.

Why did you think that the difference in the ESD rating affects the thermal resistance value?

Best Regards,

Hi Hirotsugu-san,

"I thought that the die size would change if the ESD rating changed."

I think your understanding and conclusion may be correct.

Ben