STG8205
Ver 1.0
VDD
on
t
toff
d(off)
t
r
t
d(on)
t
RL
f
t
VIN
90%
90%
D
VOUT
VOUT
10%
10%
VGS
INVERTED
RGEN
G
90%
A
50%
50%
S
IN
V
10%
PULSE WIDTH
Figure 14. Switching Waveforms
Figure 13. Switching Test Circuit
10
1
0.5
0.2
0.1
DM
P
1
t
0.1
2
t
0.05
1. R thJA (t)=r (t) * R thJA
th
2. R JA=S ee Datasheet
3. TJM-TA = PDM* R thJA (t)
4. Duty Cycle, D=t1/t2
0.02
0.01
Single Pulse
0.001
0.01
0.00001
0.0001
0.01
0.1
1
10
100
1000
Square Wave Pulse Duration(sec)
Normalized Thermal Transient Impedance Curve
Sep,17,2009
www.samhop.com.tw
5
SAMHOP [ SAMHOP MICROELECTRONICS CORP. ]
