MOSFET温升计算工具

一般性判定方法，仅计算Conductionloss,不考虑switchinglossJudgepass：ＴmosfetTjCASETEMPERATURETcMOSFETDRAINCURRENT(RMS)IDSTATICDRAIN-SOURCEONRESISTANCERDSTHERMALRESISTANCEJUNCTION-CASEMAXRθjcTHERMALRESISTANCEJUNCTION-AMBIENTMAXRθjaPOWERENVIRONMENTTALOPERATIONTEMPERATURERANGEMAXTA(MAX)TESTAMBIENTTEMPERATURETAMOSFETOPERATINGJUNCTIONTEMPERATURETjTMOSFET=TA+ID^2*RDS(ON)*Rθja+TA(MAX)-TA（粗略节温度）TMOSFETTMOSFET=TC+ID^2*RDS(ON)*Rθjc+TA(MAX)-TA（粗略节温度）TMOSFETTCASE=TMOSFET-ID^2*RDS(ON)*RθjaTCASEUnitIRF540NFUnit100℃℃28AA0.077Ω0.077Ω1℃/W6262℃/W25℃25℃3767.8℃0160.37℃0160.37℃