
1.0
D = 0.5
0.2
0.1
0.1 0.05
0.02
0.01
SINGLE PULSE
0.01
1.0E–05
1.0E–04
MGW20N120
1.0E–03
P(pk)
t1
t2
DUTY CYCLE, D = t1/t2
RθJC(t) = r(t) RθJC
D CURVES APPLY FOR POWER
PULSE TRAIN SHOWN
READ TIME AT t1
TJ(pk) – TC = P(pk) RθJC(t)
1.0E–02
t, TIME (s)
1.0E–01
1.0E+00
1.0E+01
Figure 12. Thermal Response
Motorola TMOS Power MOSFET Transistor Device Data
5