MDD44 데이터 시트보기 (PDF) - IXYS CORPORATION

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MDD44

Diode Modules

IXYS CORPORATION 

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MDD 44

Fig. 5 Three phase rectifier bridge:

Power dissipation versus direct

output current and ambient

temperature

Fig. 6 Transient thermal impedance

junction to case (per diode)

RthJC for various conduction angles d:

d

DC

180°

120°

60°

30°

RthJC (K/W)

0.59

0.61

0.63

0.66

0.70

Constants for Z calculation:

thJC

i

Rthi (K/W)

ti (s)

1

0.012

0.0012

2

0.045

0.095

3

0.533

0.455

Fig. 7 Transient thermal impedance

junction to heatsink (per diode)

RthJK for various conduction angles d:

d

DC

180°

120°

60°

30°

R (K/W)

thJK

0.79

0.81

0.83

0.86

0.90

Constants for ZthJK calculation:

i

Rthi (K/W)

ti (s)

1

0.012

0.0012

2

0.045

0.095

3

0.533

0.455

4

0.2

0.495

3-3

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