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| RHRD440 Datasheet, PDF (4/5 Pages) Fairchild Semiconductor – 4A, 400V - 600V Hyperfast Diodes | |||
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RHRD440, RHRD460, RHRD440S, RHRD460S
Test Circuits and Waveforms
VGE AMPLITUDE AND
RG CONTROL dIF/dt
t1 AND t2 CONTROL IF
L
VGE
t1
t2
DUT CURRENT
RG
SENSE
+
IGBT
- VDD
FIGURE 8. trr TEST CIRCUIT
IMAX = 1A
L = 20mH
R < 0.1â¦
EAVL = 1/2LI2 [VR(AVL)/(VR(AVL) - VDD)]
Q1 = IGBT (BVCES > DUT VR(AVL))
L
CURRENT
SENSE
Q1
DUT
R
+
VDD
VDD
-
FIGURE 10. AVALANCHE ENERGY TEST CIRCUIT
dIF
IF
dt
0
trr
ta
tb
0.25 IRM
IRM
FIGURE 9. trr WAVEFORMS AND DEFINITIONS
VAVL
IL
IL
IV
t0
t1
t2
t
FIGURE 11. AVALANCHE CURRENT AND VOLTAGE
WAVEFORMS
©2002 Fairchild Semiconductor Corporation
RHRD440, RHRD460, RHRD440S, RHRD460S Rev. B
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