IRF7342D2

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9

Fig.21 - Maximum Allowable Ambient

Temp. Vs. Forward Current

Fig 20. Maximum Effective Transient Thermal Impedance, Junction-to-Ambient

Schottky Diode Characteristics

Note (4) Formula used: T

C

= T

J

- (Pd + Pd

REV

) x R

thJA

;

Pd = Forward Power Loss = I

F(AV)

x V

FM

@ (I

D) ;

Pd

REV

= Inverse Power Loss = V

R1

x I

R

(1 - D); I

R

@ V

R1

= 80% rated V

R

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)

0

1

2

3

4

5

6

Average Forward Current - IF(AV) (A)

0

20

40

60

80

100

120

140

160

180

80 % Rated VR applied

DC

see note (4)

RthJA = 62.5 °C/W