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9/25/2017 4:18 AM
 

Hello,

 

I am using MP3423 as a boost converter. I want to calculate Tj(junction temperature) of the device for the mentioned conditions below.

1) Vin : 3.4V

2) Vout : 5V

3) Iout : 2A

Where can I get Ψjb & Ψjt for this device. Please share some calculation for thermal analysis for my application as mentioned in above given condition.

 

Regards,

Mihir

 
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9/25/2017 1:48 PM
 

Hi Mihir,

 

For MP3423, we only have Theta JA and Theta JC listed in the datasheet. It is measured on JESD51-7 standard.

 

For Vin=3.4V, Vout=5V, and Iout=2A, the efficiency is around 95.5%. The power loss is about 0.45W. The Tj is calculated to be 36C above ambient temperature based on the JESD standard.

 

Thanks,

Kevin

 

 
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