Test circuits

STF40N65M2

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DocID027442 Rev 1

3

Test circuits

Figure 14: Switching times test circuit for resistive

load

Figure 15: Gate charge test circuit

Figure 16: Test circuit for inductive load

switching and diode recovery times

Figure 17: Unclamped inductive load test circuit

Figure 18: Unclamped inductive waveform

Figure 19: Switching time waveform

AM01469v 1

47 k

Ω

1 k

Ω

47 k

Ω

2.7 k

Ω

1 k

Ω

12 V

2200 μ F

100 Ω

100 nF

D.U.T.

AM01470v1

A

D

D.U.T.

S

B

G

25

A

A

B

B

G

FAST

DIODE

D

S

L=100 µH

µF

3.3

1000

µF

Ω

D.U.T.

V

(BR)DSS

V

DD

V

DD

V

D

I

DM

I

D

AM01472v 1

AM01473v 1

0

V

GS

90%

V

DS

t

on

90%

10%

90%

10%

t

d(on)

t

r

t

t

d(off)

t

f

10%

0

off