Ch-technology 111CNQ045A Manual do Utilizador descarregar pdf (Página 5)

111CNQ045A

Bulletin PD-20.758 rev. A 03/02

Fig. 5 - Max. Allowable Case Temperature

Vs. Average Forward Current (Per Leg)

Fig. 8 - Unclamped Inductive Test Circuit

Fig. 6 - Forward Power Loss Characteristics

(Per Leg)

(2) Formula used: T

= T

- (Pd + Pd

REV

) x R

thJC

;

Pd = Forward Power Loss = I

F(AV)

x V

@ (I

F(AV)

/ D) (see Fig. 6);

REV

= Inverse Power Loss = V

x I

(1 - D); I

@ V

= 80% rated V

FREE-WHEEL

DIODE

40HFL40S02

URRENT

ONITOR

HIGH-SPEED

SWITCH

IRFP460

DUT

Rg = 25 ohm

Vd = 25 Volt

Allowable Case Temperature (°C)

Average Forward Current - I

F(AV)

(A)

Average Power Loss (Watts)

Average Forward Current - I

F(AV)

(A)

Non-Repetitive Surge Current - I

FSM

(A)

Square Wave Pulse Duration - t

(microsec)

Fig. 7 - Max. Non-Repetitive Surge Current (Per Leg)

130

140

150

160

170

180

0 102030405060708090

see note (2)

Square wave (D = 0.50)

80% Rated Vr applied

0 1020304050607080

RMS Limit

D = 0.75

D = 0.50

D = 0.33

D = 0.25

D = 0.20

100

1000

10000

10 100 1000 10000

At Any Rated Load Condition

And With Rated Vrrm Applied

Following Surge

Document Number: 93201

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