IRF7458

www.irf.com

5

Fig 10. Maximum Effective Transient Thermal Impedance, Junction-to-Ambient

0.01

0.1

1

10

100

0.00001

0.0001

0.001

0.01

0.1

1

10

100

Notes:

1. Duty factor D =

t / t

2. Peak T = P

x Z

+ T

1

2

J

DM

thJA

A

P

t

t

DM

1

2

t , Rectangular Pulse Duration (sec)

1

0.01

0.02

0.05

0.10

0.20

D = 0.50

SINGLE PULSE

(THERMAL RESPONSE)

Fig 6. On-Resistance Vs. Drain Current

Fig 10a. Switching Time Test Circuit

90%

10%

Fig 10b. Switching Time Waveforms

Pulse Width

≤ 1 µs

Duty Factor

≤ 0.1 %

D.U.T.

10V

+

25

50

75

100

125

150

0

4

8

12

16

T , Case Temperature

( C)

°

C