8TQ080STRR datasheet(4/7 Pages) IRF

4 / 7 page

8TQ...SPbF Series

Bulletin PD-21041 rev. B 06/06

www.irf.com

Fig. 8 - Unclamped Inductive Test Circuit

Fig. 5 - Maximum Allowable Case Temperature

Vs. Average Forward Current

Fig. 6 - Forward Power Loss Characteristics

Fig. 7 - Maximum Non-Repetitive Surge Current

FREE-WHEEL

DIODE

40HFL40S02

CURRENT

MONITOR

HIGH-SPEED

SWITCH

IRFP460

DUT

Rg = 25 ohm

Vd = 25 Volt

140

145

150

155

160

165

170

175

180

F(AV)

see note (2)

Average Forward Current - I

(A)

Square wave (D = 0.50)

80%Rated V applied

468

F(AV)

RMSLimit

D = 0.20

D = 0.25

D = 0.33

D = 0.50

D = 0.75

Average Forward Current - I

(A)

100

1000

100

1000

10000

Square Wave Pulse Duration - t

(microsec)

At Any Rated Load Condition

And With Rated V

Applied

Following Surge

RRM

(2)

Formula used: T

C = TJ - (Pd + PdREV) x RthJC ;

Pd = Forward Power Loss = I

F(AV) x VFM @ (IF(AV) / D) (see Fig. 6);

REV = Inverse Power Loss = VR1 x IR (1 - D); IR @ VR1 = 80% rated VR

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