70-W224NIA400SH-M400P Datasheet, PDF (22/32 Pages) Vincotech – Snubber diode for optional asymmetrical inductance

70-W224NIA400SH-M400P
datasheet
Snubber Diode D7, D8
Figure 1
Typical diode forward current as
a function of forward voltage
I_F= f(V_F)
600
Snubber Diode
500
400
T_j = 25°C
300
T_j = T_jmax-25°C
200
100
0
0
1
2
3
4
V F (V) ⁵
At
t_p =
250
µs
Figure 2
Diode transient thermal impedance
as a function of pulse width
Z_thJH = f(t_p)
10⁰
Snubber Diode
10^-1
D = 0,5
0,2
10^-2
0,1
0,05
0,02
0,01
0,005
0.000
10^-3
10^-5
10^-4
10^-3
10^-2
10^-1
10⁰
t p (s) ₁₀1 ₁₀
At
D=
R_thJH =
t_p / T
0,588
K/W
Figure 3
Power dissipation as a
function of heatsink temperature
P_tot = f(T_h)
300
250
200
150
100
50
0
0
50
100
At
T_j =
175
ºC
Snubber Diode
Figure 4
Forward current as a
function of heatsink temperature
I_F = f(T_h)
150
120
90
60
30
0
150
T h ( ^o C)
200
0
50
100
At
T_j =
175
ºC
Snubber Diode
150
T h ( ^o C) 200
copyright Vincotech
22
14 Jul 2015 / Revision 4