RFG70N06 Datasheet, PDF (5/6 Pages) Fairchild Semiconductor – 70A, 60V, Avalanche Rated, N-Channel Enhancement-Mode Power MOSFETs

RFG70N06, RFP70N06, RF1S70N06, RF1S70N06SM
Typical Performance Curves (Continued)
300
If R = 0
t_AV = (L)(I_AS)/(1.3*RATED BV_DSS - V_DD)
If R ≠ 0
t_AV = (L/R) ln [(I_AS*R)/(1.3*RATED BV_DSS-V_DD) +1]
100
STARTING T_J = +25^oC
STARTING T_J = +150^oC
10
0.01
0.1
1
10
t_AV, TIME IN AVALANCHE (ms)
FIGURE 13. UNCLAMPED INDUCTIVE SWITCHING
REFER TO HARRIS APPLICATION NOTES AN9321 AND AN9322
Test Circuits and Waveforms
V_DS
VARY t_P TO OBTAIN
REQUIRED PEAK I_AS
R_G
V_GS
t_P
0V
L
DUT
+
V_DD
-
I_L
0.01Ω
t_P
I_AS
BV_DSS
V_DS
V_DD
t_AV
FIGURE 14. UNCLAMPED ENERGY TEST CIRCUIT
V_GS
0V
R_GS
V_DD
R_L
V_DS
DUT
FIGURE 16. RESISTIVE SWITCHING TEST CIRCUIT
FIGURE 15. UNCLAMPED ENERGY WAVEFORMS
V_DS
t_ON
t_D(ON)
t_R
90%
10%
V_GS
10%
50%
PULSE WIDTH
t_OFF
t_D(OFF)
t_F
90%
10%
90%
50%
FIGURE 17. RESISTIVE SWITCHING WAVEFORMS
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