STDLED625 Datasheet, PDF (9/18 Pages) STMicroelectronics – Gate charge minimized

STDLED625, STULED625
3
Test circuits
Test circuits
Figure 15. Switching times test circuit for
resistive load
Figure 16. Gate charge test circuit
VDD
12V
47kΩ
1kΩ
100nF
RL
2200
3.3
μF
μF _VDD
IG=CONST
VD
VGS
) RG
ct(s ^PW
D.U.T.
Vi=20V=VGMAX
2200
μF
2.7kΩ
47kΩ
100Ω
D.U.T.
VG
du _PW
ro ^AM01468v1
1kΩ
AM01469v1
P _{Figure 17. Test circuit for inductive load}
te _{switching and diode recovery times}
Figure 18. Unclamped inductive load test circuit
Obsole _G
ct(s) ^{- 25Ω}
A
D
D.U.T.
S
B
AA
FAST
DIODE
L=100μH
B
3.3
B
μF
D
G
du ^RG
S
1000
μF
VDD
Vi
L
VD
2200
3.3
μF
μF
VDD
ID
D.U.T.
te ^{Pro AM01470v1}
le _{Figure 19. Unclamped inductive waveform}
so _V(BR)DSS
Ob VD
Pw
AM01471v1
Figure 20. Switching time waveform
ton
tdon
tr
toff
tdoff tf
VDD
IDM
ID
0
VDD
90%
10% VDS
90%
VGS
90%
10%
AM01472v1
0
10%
AM01473v1
DocID025167 Rev 1
9/18