CEP21A3/CEB21A3
4
4
VDD
on
t
toff
d(off)
t
r
t
d(on)
OUT
RL
t
f
t
VIN
90%
10%
90%
D
OUT
V
V
VGS
10% INVERTED
RGEN
G
90%
50%
50%
S
IN
V
10%
PULSE WIDTH
Figure 12. Switching Waveforms
Figure 11. Switching Test Circuit
2
1
D=0.5
0.2
0.1
DM
P
0.1
0.05
1
t
2
t
0.02
0.01
1. RįJC (t)=r (t) * RįJC
2. RįJC=See Datasheet
3. TJM-TC = P* RįJC (t)
4. Duty Cycle, D=t1/t2
Single Pulse
0.01
10-5
10-4
10-3
10-2
10-1
1
10
Square Wave Pulse Duration (sec)
Figure 13. Normalized Thermal Transient Impedance Curve
4-171