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Ask help on choosing heatsink

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yzou_ua

yzou_ua

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I have a IGBT mudule(attached), need a heatsink to work. It has specifications as:
"0.88C/W IGBT thermal resistance per 1/6 module as well as 1.25C/W free-wheeling diode thermal resistance per 1/6 module" - pp.4.

So, the thermal resistance should be calculated as: 0.88*6+1.25*6=12.87 °C/watt ?? Is that right??
 

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I believe this means you should treat the IGBT and diode
losses separately and criticize them each against ratings
based on these thermal impedance numbers.
 

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