FOD3182 Datasheet, PDF (16/23 Pages) Fairchild Semiconductor – 3A Output Current, High Speed MOSFET Gate Driver Optocoupler

Test Circuit (Continued)
1
2
+
–
F = 250kHz
Probe
3
DC = 50%
50Ω
4
8
0.1µF
7
V_O
+
–
V_DD = 10 to 30V
6
Rg = 10Ω
Cg = 10nF
5
I_F
t_r
V_OUT
t_f
90%
50%
10%
t_PLH
t_PHL
Figure 29. t_PHL, t_PLH, t_r and t_f Test Circuit and Waveforms
I_F
A
B
5V
+
–
V_CM
1
8
2
7
3
6
4
5
+–
V_CM = 2,000V
0.1µF
V_O
+
–
V_DD = 30V
0V
∆t
V_O
Switch at A: I_F = 10mA
V_O
Switch at B: I_F = 0mA
V_OH
V_OL
Figure 30. CMR Test Circuit and Waveforms
©2010 Fairchild Semiconductor Corporation
FOD3182 Rev. 1.0.9
16
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