S TU/D426S
VDD
on
t
toff
d(off)
t
r
t
d(on)
t
R L
f
t
V IN
90%
10%
90%
D
OUT
V
OUT
V
V
VGS
10%
INVE R TE D
RGE N
G
90%
50%
50%
S
IN
10%
PULS E WIDTH
6
Figure 14. S witching Waveforms
Figure 13. S witching Test Circuit
(BR )DSS
15V
t
p
DRIVE R
L
V
DS
D.U .T
R
+
G
V
-
DD
I
A
AS
20V
0.01
t
p
I
AS
duct
In
i
ncl
U
ed
ve ave
f rms
am
W
p
o
t
Te Ci cu t
s
r i
d
uct
In
i
ve
ncl
U
ed
am
p
Figure 15b.
Figure 15a.
2
1
D=0.5
0.2
0.1
DM
P
0.1
0.05
1
t
2
t
0.02
0.01
1. R J JA (t)=r (t) * R J JA
2. R J JA=S ee Datasheet
3. TJM-TA = PDM* R J JA (t)
4. Duty Cycle, D=t1/t2
S INGLE PULS E
10-4
0.01
10-5
10-3
10-2
10-1
1
10
S quare Wave Pulse Duration (sec)
Figure 16. Normalized Thermal Transient Impedance Curve
6
SAMHOP [ SAMHOP MICROELECTRONICS CORP. ]
