12VDC/1A supply heating Problem

How are you measuring the temperature? Are you using a thermocouple?
If you measure 80 C on the source pins then this is normal expected behavior. The source pins should be below 110 C for P/G packages.

Hi

friend, i want to design the 12v,1A smps for my project.

can you help me designing smps by providing information that you have used for designing your smps.

please help me with designing smps.

thanks

Hi Ahvin,

There is already a reference design for this specification. You should look here:

https://ac-dc.power.com/design-support/reference-designs/design-examples/rdr-399/

A working sample of this design is also available as RDK-399.

Best regards,

Josh

Hi Ahvin,

Please post your question seperately if you need a design help. This post belongs to someone else.

Regards,

PI-NANO