EVL6563S-200ZRC STMicroelectronics, EVL6563S-200ZRC Datasheet - Page 37

• Manufacturer Part Number: EVL6563S-200ZRC
• Description: Power Management Modules & Development Tools Tranisition Mode PFC L6563S EVL Board
• Manufacturer: STMicroelectronics
• Type: Motor / Motion Controllers & Driversr

Specifications of EVL6563S-200ZRC

• Product: Power Management Modules
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AN3180
Figure 30. Winding connections: aiding flux (left), opposing flux (right)
It is always L
Equation 32
The advantage of this method is its low sensitivity to winding resistance and to the
impedance of the wire used for connecting the windings. It is not recommended for low
values of k because in that case it would be given by the difference of two similar quantities,
and the error might be high.
Whichever method has been used, the parameters of the equivalent circuit of
n , assuming n is known) can be readily calculated from the third group of
obvious symbolism change:
Equation 33
The parameters of the equivalent circuit of
are given by
Equation 34
A
Figure 28
> L
O
, therefore, as already mentioned:
, here re-written for convenience:
⎧
⎪
⎨
⎪
⎩
M
Doc ID 17273 Rev 1
Measuring transformer and coupled inductor parameters
L
L
L
⎧
⎪
⎪ ⎪
⎨
⎪
⎪
⎪
⎩
b
=
a
μ
L
L
L
M
l
l
=
=
=
L
1
2
A
k
(
=
(
=
=
1
1
4
−
L
L
M
L
−
−
n
1
1
L
2
k
k
O
−
−
)
)
L
L
L
n
Figure 26
M
1
2
2
⇒
L
,
=
M
L
with
1
=
k
−
L
=
M
2
n
n
4
(a = n
L
−
e
A
n
=
L
M
−
1
L
L
e
L
L
O
, useful in case n is not known)
2
2
1
Figure 26
Figure 25
with
37/39
(a =