
Electronic Devices for Power Switching 1-31
restrict the choice of the optimum process, for example in selecting self-isolation or junction isolation,
S
MART-power technology.
e
n
umber
o
f
p
ower
o
utput
c
hannels
i
s
a r
elevant
o
rientation
f
or
t
he
s
tructure
o
f
t
he
p
ower
t
ransistor
a
nd
t
his
d
ecides
o
n
t
he
t
echnology.
I
n
c
ase
o
f
s
ingle
o
utput,
t
he
b
ackside
o
f
t
he
c
hip
c
an
a
ct
a
s
t
he
d
rain
c
ontact,
w
hich
s
tands
f
or
s
elf-isolation
t
echnology.
us,
t
he
c
urrent
ows
v
ertically
t
hrough
t
he
d
evices,
w
hich
i
s
o
ptimal
f
or
t
he
p
ower
l
osses
g
enerated.
F
or
m
ultiple
o
utputs,
a
ll
c
ontacts
a
re
n
ormally
p
laced
o
n
t
op
o
f
t
he
c
hip
a
nd
a
s
a c
onsequence,
t
he
c
urren