
VDD
RL
VIN
D
VOUT
VGS
RGEN G
S
Figure 17. Switching Test Circuit
CEU4269
td(on)
VOUT
t on
tr
td(off)
90%
10% INVERTED
toff
tf
90%
10%
VIN
10%
50%
90%
50%
PULSE WIDTH
Figure 18. Switching Waveforms
100
D=0.5
0.2
10-1
0.1
0.05
0.02
0.01
Single Pulse
10-2
10-2
10-1
100
101
102
Square Wave Pulse Duration (sec)
PDM
t1
t2
1. RθJC (t)=r (t) * RθJC
2. RθJC=See Datasheet
3. TJM-TC = P* RθJC (t)
4. Duty Cycle, D=t1/t2
103
104
Figure 19. Normalized Thermal Transient Impedance Curve
7