40CTQ045 datasheet(4/8 Pages) IRF

4 / 8 page

40CTQ045, 40CTQ045S, 40CTQ045-1

Bulletin PD-20544 rev. C 12/01

www.irf.com

Fig. 8 - Unclamped Inductive Test Circuit

(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 = 10 V

Fig.7-Max. Non-Repetitive Surge Current (PerLeg)

Fig.5-Max. Allowable CaseTemperature

Vs. Average Forward Current (PerLeg)

Fig.6-Forward Power Loss Characteristics

(PerLeg)

FR EE-W H E EL

D IO D E

40H FL40 S02

CU R RE N T

MO N ITO R

HIG H-SP E ED

SW ITC H

IRFP460

DU T

Rg = 25 ohm

Vd = 25 V o lt

100

105

110

115

120

125

130

135

140

145

150

1 5

F(A V )

A ve rag e Forw a rd C urren t - I

(A )

se e n o te (2)

Sq uare w a ve (D = 0.50)

80% Rate d V a pp lie d

F(A V )

RM S Lim it

D = 0.20

D = 0.25

D = 0.33

D = 0.50

D = 0.75

A vera g e Forw a rd C urre n t - I

(A)

100

1000

10000

100

1000

10000

At Any Rated Load C ondition

An d W ith Ra te d V

Ap plied

Follow in g Surg e

RRM

Square W ave Pulse D uration - t

(m ic rose c)

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