STM4973 Datasheet, PDF (5/7 Pages) SamHop Microelectronics Corp. – Dual P -Channel E nhancement Mode F ield E ffect Transistor

S TM4973
-VDD
RL
V IN
D
V OUT
VG S
RGEN _G
S
F igure 11. S witching T es t C ircuit
td(on)
VOUT
ton
tr
td(off)
90%
10%
toff
tf
90%
10%
VIN
10%
90%
50%
50%
INVE R TE D
PULS E WIDTH
F igure 12. S witching Waveforms
2
1
Duty C ycle=0.5
0.2
0.1
0.1
0.05
0.02
0.01
10^-4
S ingle P uls e
10^-3
10^-2
10^-1
1
S quare Wave P uls e Duration (s ec)
P DM
t1
t2
1. R thJA (t)=r (t) * R thJA
2. R thJA=S ee Datas heet
3. T J M-T A = P DM* R thJ A (t)
4. Duty C ycle, D=t1/t2
10
100
F igure 13. Normalized T hermal T rans ient Impedance C urve
5