MITSUBISHI ELECTRIC三菱电机HV-SiC功率模块IGBT模块 绝缘强度和LTDS应用说明.pdf

1IGBTModules

PleasenotethefollowingpointswhenusingIGBTmodules:

国lsolationvoltage

OurIGBTmodulesareassumedtheirusebelowanaltitudeof2000metersanddesignedtheirisolationvoltagebased

onUL840.WhenusingIGBTmodulesoveraltitudeof2000meters，pleasenotethatelectricaldischargeiseasily

generatedbylowerpressuregenerally.

Referencedataforrelationshipbetweenaltitudeandrequiredcreepagedistance

AltitudeRatio

2000m1.00

3000m1.14

4000m1.29

5000m1.48

国LTDS

LTDS,LongTermDCStabilitymeansaccidentalfailuretoleranceduetocosmicrays.

CosmicrayisgenericnameoftheradiationdrenchedtoEarthfromspace,andnotonlyflyingthroughspace,butalso

includessecondarycosmicraysgeneratedbyinterferencewiththeatmosphere.ltissaidthattheneutroninthe

radiationcancausefailure.Failurerateduetocosmicrayschangesbyitsusingconditions--voltageandtemperature--

andbyitsradiationdose--installedstate/latitude/longitude/altitude--.

Voltage-dependence;

Failurerateduetocosmicraysincreasesashighervoltageappliedbetweenthecollectorandtheemitter.

Temperature-dependence;

Failurerateduetocosmicraysdecreasesathighertemperature.

“Latitudeandlongitude-dependence;

Failurerateduetocosmicraysdependsatthesiteofuse.ltissaidingeneralthattheneutronbeamof

near-surfaceismostlysecondaryradiation,andneutrondosearedifferentbyitslatitudeanditsIongitude.

Altitude-dependence;

Failurerateduetocosmicraysincreasesathighaltitude.ltissaidingeneralthatneutrondosearealsodifferent

byitsaltitude.PleasereferfollowingdatafromJapanAtomicEnergyAgency,regardingtherelationshipbetween

thealtitudeandneutrondose.

AtTokyo,on1stJanuary2013

AltitudeNe