FQT3P20TF Datasheet, PDF (5/8 Pages) Fairchild Semiconductor – P-Channel QFET MOSFET -200 V, -0.67 A, 2.7

Figure 12. Gate Charge Test Circuit & Waveform
Same Type
50KΩ
as DUT
12V
200nF
300nF
V_GS
-10V
V_GS
V_DS
Q_gs
I_G = co-3nmsAt.
DUT
Q_g
Q_gd
Charge
-^V1G0SV
Figure 13. Resistive Switching Test Circuit & Waveforms
V_DS
V_GS
R_G
R_L
V_DD
t _on
t_d(on)
t_r
V_{GS 10%}
t _off
t_d(off)
t_f
DUT
V_DS
90%
Figure 14. Unclamped Inductive Switching Test Circuit & Waveforms
L
V_DS
E_AS =
--1--
2
L I_AS2
BV_DSS
--------------------
BV_DSS - V_DD
t_p
Time
I_D
R_G
V_DD
V_DD
I_D (t)
V_DS (t)
-^V1G0SV
t_p
DUT
I_AS
BV_DSS
©2001 Fairchild Semiconductor Corporation
5
FQT3P20 Rev. C0
www.fairchildsemi.com