RFM12N35 Datasheet, PDF (4/4 Pages) Intersil Corporation – 12A, 350V and 400V, 0.500 Ohm, N-Channel Power MOSFETs

RFM12N35, RFM12N40
Typical Performance Curves Unless Otherwise Specified (Continued)
4
I_D = 12A
V_GS = 10V
3
2
I_D = 250µA
V_GS = V_DS
1.5
2
1
1
0.5
0
-50
0
50
100
150
T_J, JUNCTION TEMPERATURE (^oC)
FIGURE 7. NORMALIZED DRAIN TO SOURCE ON
RESISTANCE vs JUNCTION TEMPERATURE
0
-50
0
50
100
150
T_J, JUNCTION TEMPERATURE (^oC)
FIGURE 8. NORMALIZED GATE THRESHOLD VOLTAGE vs
JUNCTION TEMPERATURE
4000
3000
2000
V_GS = 0V, f = 1MHz
C_ISS = C_GS + C_GD
C_RSS = C_GD
C_OSS ≈ C_DS + C_GS
C_ISS
1000
0
0
C_OSS
C_RSS
10
20
30
40
50
V_DS, DRAIN TO SOURCE VOLTAGE (V)
FIGURE 9. CAPACITANCE vs DRAIN TO SOURCE VOLTAGE
Test Circuits and Waveforms
400
10
8
300
GATE
SOURCE
V_DD = BV_DSS
VOLTAGE
V_DD = BV_DSS
6
200
R_L = 33.3Ω
I_G(REF) = 2.5mA
V_GS = 10V
4
0.75BV_DSS 0.75BV_DSS
100
0.50BV_DSS 0.50BV_DSS
0.25BV_DSS 0.25BV_DSS
2
DRAIN SOURCE VOLTAGE
0
I_G(REF)
20
I_G(ACT)
t, TIME (µs)
0
I_G(REF)
80
I_G(ACT)
NOTE: Refer to Harris Application Notes AN7254 and 7260.
FIGURE 10. NORMALIZED SWITCHING WAVEFORMS FOR
CONSTANT GATE CURRENT
R_L
+
R_G
V_DD
-
DUT
V_GS
FIGURE 11. SWITCHING TIME TEST CIRCUIT
V_DS
t_ON
t_d(ON)
t_r
90%
t_OFF
t_d(OFF)
t_f
90%
10%
0
10%
90%
V_GS
10%
0
50%
PULSE WIDTH
50%
FIGURE 12. RESISTIVE SWITCHING WAVEFORMS
5-4