S T M8305
V
DD
t
on
V
IN
D
R
L
V
OUT
V
OUT
R
GE N
G
90%
10%
t
off
t
r
90%
t
d(on)
t
d(off)
90%
10%
t
f
5
V
G S
INVE R TE D
S
V
IN
50%
10%
50%
P ULS E WIDTH
F igure 11. S witching T es t C ircuit
F igure 12. S witching Waveforms
N-C hannel
9
Normalized Transient
1
0.5
0.2
Thermal Resistance
0.1
0.1
0.05
0.02
0.01
on
P
DM
t
1
1.
2.
3.
4.
t
2
0.01
0.00001
0.0001
Single Pulse
0.001
0.01
0.1
1
10
R
thJ A
(t)=r (t) * R
thJ A
R
thJ A
=S ee Datas heet
T
J M-
T
A
= P
DM
* R
thJ A
(t)
Duty C ycle, D=t
1
/t
2
100
1000
P-C hannel
9
Square Wave Pulse Duration(sec)
Normalized Thermal Transient Impedance Curve
Normalized Transient
Thermal Resistance
1
0.5
0.2
0.1
0.1
0.05
0.02
0.01
on
P
DM
t
1
1.
2.
3.
4.
t
2
0.01
0.00001
0.0001
Single Pulse
0.001
0.01
0.1
1
10
R
thJ A
(t)=r (t) * R
thJ A
R
thJ A
=S ee Datas heet
T
J M-
T
A
= P
DM
* R
thJ A
(t)
Duty C ycle, D=t
1
/t
2
100
1000
Square Wave Pulse Duration(sec)
Normalized Thermal Transient Impedance Curve
9