S TM8303
VDD
on
t
toff
d(off)
t
r
t
d(on)
t
R L
f
t
5
V IN
90%
10%
90%
D
OUT
V
OUT
V
V
10%
VG S
INVE R TE D
R G E N
G
90%
50%
50%
S
IN
10%
P ULS E WIDTH
Figure 12. S witching Waveforms
Figure 11. S witching Test C ircuit
N-C hannel
9
1
0.5
0.2
0.1
DM
P
0.1
0.05
1
t
2
t
0.02
0.01
on
1. R thJ A (t)=r (t) * R thJ A
th
2. R J A=S ee Datasheet
3. TJ M-TA = P DM* R thJ A (t)
4. Duty C ycle, D=t1/t2
Single Pulse
0.001
0.01
0.00001
0.0001
0.01
Square Wave Pulse Duration(sec)
Normalized Thermal Transient Impedance Curve
0.1
1
10
100
1000
P-C hannel
9
1
0.5
0.2
0.1
DM
P
0.1
0.05
1
t
2
t
0.02
0.01
on
1. R thJ A (t)=r (t) * R thJ A
th
2. R J A=S ee Datasheet
Single Pulse
3. TJ M-TA = P DM* R thJ A (t)
4. Duty C ycle, D=t1/t2
0.01
0.00001
0.0001
0.001
0.01
Square Wave Pulse Duration(sec)
Normalized Thermal Transient Impedance Curve
0.1
1
10
100
1000
SAMHOP [ SAMHOP MICROELECTRONICS CORP. ]
