IRGP20B60PDPbF

www.irf.com

7

Fig. 24. Maximum Transient Thermal Impedance, Junction-to-Case (DIODE)

Fig 23. Maximum Transient Thermal Impedance, Junction-to-Case (IGBT)

1E-006

1E-005

0.0001

0.001

0.01

0.1

1

t1 , Rectangular Pulse Duration (sec)

0.001

0.01

0.1

1

0.20

0.10

D = 0.50

0.02

0.01

0.05

SINGLE PULSE

( THERMAL RESPONSE )

Notes:

1. Duty Factor D = t1/t2

2. Peak Tj = P dm x Zthjc + Tc

τ

J

τ

J

τ

1

τ

1

τ

2

τ

2

τ

3

τ

3

R

1

R

1

R

2

R

2

R

3

R

3

Ci

i

/Ri

Ci=

τi/Ri

τ

τ

C

τ

4

τ

4

R

4

R

4

Ri (°C/W)

τi (sec)

0.12003

0.000034

0.05001

0.000034

0.23292

0.000970

0.17719

0.011265

1E-006

1E-005

0.0001

0.001

0.01

0.1

1

t1 , Rectangular Pulse Duration (sec)

0.001

0.01

0.1

1

10

0.20

0.10

D = 0.50

0.02

0.01

0.05

SINGLE PULSE

( THERMAL RESPONSE )

Notes:

1. Duty Factor D = t1/t2

2. Peak Tj = P dm x Zthjc + Tc

Ri (°C/W)

τi (sec)

0.8667

0.000121

1.6349

0.001726

τ

J

τ

J

τ

1

τ

1

τ

2

τ

2

R

1

R

1

R

2

R

2

τ

τ

C

Ci

i

/Ri

Ci=

τi/Ri