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Why do you specify a Derating Curve?
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At a certain temperature the internal heat dissipation makes impossible for the converter to supply 100% of its power and it starts to gradually provide less power as the temperature goes higher. This temperature is specified as Ambient Temperature.
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I have temperature problems. Can I use a heat sink to increase the temperature range?
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The converters have a derating curve that starts usually between 70°C and 85°C. From that temperature point the power is reduced linearly. You can use a heat sink to move this temperature point up a few degrees. If your application doesn’t have a adequate ventilation system, even a large heat sink may not be effective. The solution would be to use a higher power converter instead.
