RJK5020DPK
Normalized Transient Thermal Impedance vs. Pulse Width
3
1
D=1
Tc = 25°C
0.5
0.3
0.2
0.1 0.1
0.05
0.03
0.02
0.01
1shot
pulse
0.01
10 µ
100 µ
θch – c(t) = γ s (t) • θ ch – c
θch – c = 0.625°C/W, Tc = 25°C
PDM
D=
PW
T
PW
T
1m
10 m
100 m
1
10
Pulse Width PW (s)
Switching Time Test Circuit
Vin Monitor
10 Ω
Vin
10 V
D.U.T.
Vout
Monitor
RL
VDD
= 250 V
Waveform
90%
Vin
Vout
10%
10%
10%
td(on)
90%
90%
tr
td(off)
tf
Rev.2.00 Dec 19, 2006 page 5 of 6