LDP24A

3/5

1

2

5

10

20

50

100

0.1

0.2

0.5

1.0

2.0

5.0

10.0

tp(ms)

Ppp(kW)

Fig. 1: Peak pulse power versus exponential pulse

duration (Tj initial=85°C).

1

2

5

10

20

50

100

10

20

50

100

200

tp(ms)

Ipp(A)

Fig. 2 : Peak pulse current versus exponential

pulse duration (Tj initial=85°C).

0

25

50

75

100

125

150

175

200

0.0

0.2

0.4

0.6

0.8

1.0

1.2

Tj (°C)

Ppp[Tj] / Ppp [Tj initial=85°C]

Fig. 3: Relative variation of peak pulse power versus

junction temperature.

0

25

50

75

100

125

150

175

0

1

2

3

4

5

6

Tamb(°C)

P(W)

Rth(j-a)=Rth(j-l)

Rth(j-a)=50°C/W

Fig. 4: Continous power dissipation versus ambient

temperature.

1E-2

1E-1

1E+0

1E+1

1E+2

1E+3

0.1

1.0

10.0

100.0

tp(s)

Zth(j-a)(°C/W)

Lleads=10mm

Fig. 5: Variation of thermal impedance junction to

ambient versus pulse duration (printed circuit

board FR4, e(Cu)=35

0.0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0

1

10

100

200

VFM(V)

IFM(A)

Tj=125°C

Tj=25°C

Fig. 6 : Peak forward voltage drop versus peak

forward current (typical values).