www.vishay.com

Document Number: 91079

6

S11-1051-Rev. C, 30-May-11

This document is subject to change without notice.

IRF9540S, SiHF9540S

Vishay Siliconix

Fig. 12a - Unclamped Inductive Test Circuit

Fig. 12b - Unclamped Inductive Waveforms

Fig. 12c - Maximum Avalanche Energy vs. Drain Current

Fig. 13a - Basic Gate Charge Waveform

Fig. 13b - Gate Charge Test Circuit

Pulse width

≤ 1 µs

Duty factor

≤ 0.1 %

R

D

V

GS

R

g

D.U.T.

- 10 V

V

DS

V

DD

25

150

125

100

75

50

2000

0

400

800

1200

1600

Bottom

Top

I

D

- 7.8 A

- 13 A

- 19 A

V

91079_12c

175

Q

GS

Q

GD

Q

G

Charge

- 10 V

D.U.T.

- 3 mA

V

GS

V

DS

I

G

I

D

0.3 µF

0.2 µF

50 k

Ω

12 V

Current regulator

Current sampling resistors

Same type as D.U.T.