6

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© 2013 International Rectifier

July 10, 2013

 

AUIRFP4409

Fig 13. Maximum Effective Transient Thermal Impedance, Junction-to-Case

0

200

400

600

800

1000

diF /dt (A/µs)

1000

1500

2000

2500

3000

3500

IF = 16A

VR = 255V

TJ = 25°C

TJ = 125°C

0

200

400

600

800

1000

diF /dt (A/µs)

10

20

30

40

50

IF = 16A

VR = 255V

TJ = 25°C

TJ = 125°C

Fig 16. Typical Stored Charge vs. dif/dt

Fig 17. Typical Stored Charge vs. dif/dt

Fig 14. Typical Recovery Current vs. dif/dt

0

200

400

600

800

1000

diF /dt (A/µs)

10

20

30

40

50

60

IF = 24A

VR = 255V

TJ = 25°C

TJ = 125°C

0

200

400

600

800

1000

diF /dt (A/µs)

1000

1500

2000

2500

3000

3500

4000

4500

5000

IF = 24A

VR = 255V

TJ = 25°C

TJ = 125°C

Fig 15. Typical Recovery Current vs. dif/dt

1E-006

1E-005

0.0001

0.001

0.01

0.1

t1 , Rectangular Pulse Duration (sec)

0.0001

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