Figure A. Definition of switching times
SKW20N60
i,v
di /dt
F
I
F
I
rrm
t =t +t
rr S F
Q =Q +Q
rr
S
F
t
rr
t
t
S
F
QQ
S
F
10% I
t
rrm
di /dt V
90% I r r
R
rrm
Figure C. Definition of diodes
switching characteristics
τ1
r1
Tj (t)
p(t)
r1
τ2
r2
r2
τn
rn
rn
TC
Figure D. Thermal equivalent
circuit
Figure B. Definition of switching losses
12
Mar-00