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How to reduce the temperature of SMPS transformer?

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zyrixx

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can someone please help me in reducing the temperature of the power transformer...
what should be done? should i decrease the freaquency?

thnxs in advace
 

satya_vijayawada

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Re: SMPS transformer

give me the full details (like core size output power ..........)

or

try this
www.powerint.com

search for AN-18.pdf (flayback transformer construction guide)

satya
:D
 

vanko1tempg

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SMPS transformer

you maybe increase the core size and the wire size.
 

munich1806

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Re: SMPS transformer

You may induce gap between winding for better heat sink.
 

wisepie

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Re: SMPS transformer

If reduce the frequency will increase the core temperature. Probably you can use bifillar winding rather than single wire. This will reduce the ac resistance or the skin effect.

Added after 1 hours 21 minutes:

munich1806 said:
You may induce gap between winding for better heat sink.


How to introduce gap in winding?
 

zyrixx

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Re: SMPS transformer

actually what i know is its output power is 500W and it is a planar transformer. the wires are tripple insulated already...

the topology is full bridge and i have tried varying the blocking cap


thnks
 

munich1806

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Re: SMPS transformer

wisepie said:
If reduce the frequency will increase the core temperature. Probably you can use bifillar winding rather than single wire. This will reduce the ac resistance or the skin effect.

Added after 1 hours 21 minutes:

munich1806 said:
You may induce gap between winding for better heat sink.


How to introduce gap in winding?

put stripped paper between winding.
 

wisepie

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Re: SMPS transformer

munich1806 said:
wisepie said:
If reduce the frequency will increase the core temperature. Probably you can use bifillar winding rather than single wire. This will reduce the ac resistance or the skin effect.

Added after 1 hours 21 minutes:

munich1806 said:
You may induce gap between winding for better heat sink.


How to introduce gap in winding?

put stripped paper between winding.

I dont think this is a effective way.
 

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