IRFP460
Test Circuits and Waveforms
V
DS
BV
DSS
L
t
P
V
DS
I
VARY t TO OBTAIN
P
AS
+
V
DD
R
REQUIRED PEAK I
G
AS
V
DD
-
V
GS
DUT
t
P
I
0V
AS
0
0.01Ω
t
AV
FIGURE 15. UNCLAMPED ENERGY TEST CIRCUIT
FIGURE 16. UNCLAMPED ENERGY WAVEFORMS
t
t
ON
OFF
t
d(OFF)
t
d(ON)
t
t
f
r
R
L
V
DS
90%
90%
+
V
DD
10%
10%
R
G
0
0
-
DUT
90%
50%
V
GS
50%
PULSE WIDTH
10%
V
GS
FIGURE 17. SWITCHING TIME TEST CIRCUIT
FIGURE 18. RESISTIVE SWITCHING WAVEFORMS
V
DS
(ISOLATED
SUPPLY)
CURRENT
REGULATOR
V
DD
Q
g(TOT)
V
GS
SAME TYPE
AS DUT
Q
gd
12V
BATTERY
0.2µF
50kΩ
Q
gs
0.3µF
D
S
V
DS
0
0
G
DUT
I
G(REF)
I
G(REF)
0
V
DS
I CURRENT
D
SAMPLING
RESISTOR
I
CURRENT
SAMPLING
RESISTOR
G
FIGURE 20. GATE CHARGE WAVEFORMS
FIGURE 19. GATE CHARGE TEST CIRCUIT
4-364
INTERSIL [ Intersil ]
