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October 16, 2014

IRF7907TRPbF-1

Fig 25. Maximum Effective Transient Thermal Impedance, Junction-to-Ambient (Q1)

Fig 26. Maximum Effective Transient Thermal Impedance, Junction-to-Ambient (Q2)

Fig 27. Layout Diagram

L

D1

D1

D2

D2

S1

G1

S2

G2

5

6

7

8

4

3

2

1

GND

1E-006

1E-005

0.0001

0.001

0.01

0.1

1

10

100

t1 , Rectangular Pulse Duration (sec)

0.01

0.1

1

10

100

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 Zthja + Ta

Ri (°C/W)

τι (sec)

2.288789 0.000137

7.167906 0.014957

36.98193 0.72461

16.07333

26.8

Ci i

/Ri

Ci=

τi/Ri

1E-006

1E-005

0.0001

0.001

0.01

0.1

1

10

100

t1 , Rectangular Pulse Duration (sec)

0.01

0.1

1

10

100

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 Zthja + Ta

Ri (°C/W)

τι (sec)

1.848416 0.000164

11.29818 0.054158

34.97452

0.9598

14.3858

38.2

Ci i

/Ri

Ci=

τi/Ri