STEVAL-ISF002V1 STMicroelectronics, STEVAL-ISF002V1 Datasheet - Page 13

• Manufacturer Part Number: STEVAL-ISF002V1
• Description: BOARD EVALUATION
• Manufacturer: STMicroelectronics

Specifications of STEVAL-ISF002V1

• Main Purpose: *
• Embedded: *
• Utilized Ic / Part: *
• Primary Attributes: *
• Secondary Attributes: *
• Product: Power Management Modules
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-10422

UM0877
3.3.4
3.3.5
Boost inductor for CCM
The inductance value is calculated by taking into account the inductor’s continuous
conduction mode.
Equation 8
Equation 9
Equation 10
Equation 11
Equation 12
Equation 13
The inductor shown in
operating conditions.
Output capacitor
Assuming that V
Equation 14
Two capacitors in parallel have been selected. Their values are 330 µF at 450 V.
L
min
≥
L
out(ripple)
min
C
V
out
out
≥
I
L(pk)
δ ⋅
≥
L
(
Section A.2
f
V
min
sw
max
⋅ π
out
≤ 5%, the value of the output capacitor is calculated.
⋅
=
2
I
≥
V
ripple
−
⋅
⋅
I
in(pk)
(
out
1
(
f
V
mains
V
Doc ID 16854 Rev 1
−
I
in(pk)
out
out(max)
⋅
δ
f
sw
max
+
−
⋅
min
is manufactured with this inductance value at normal
I
I
V
L(avg)
V
ripple
⋅
I
)
out(ripple
)
2
in(pk)
ripple
L
⋅
=
V
min
in(pk)
V
=
=
min
out
≥
⎛
⎜
⎝
2
)
)
11
min
. 0
⋅
⋅
f
⋅
sw
=
⎛
⎜
⎜
⎝
I
V
π
530
.
L(pk)
V
38
out
=
⋅ π
⋅
out
STEVAL-ISF002V1 hardware description
I
ripple
(
415
2
+
−
mH
V
≅
−
⋅
. 2
V
out
415
50
1400
(
8
415
in(pk)
V
2
28
−
A
out
V
⋅
185
f
415
⋅
sw
out
⎞
⎟
⎠
min
80
100
−
A
⋅
V
⋅
I
⋅
⋅
=
ripple
⋅
in(pk)
⎛
⎜
⎜
⎝
10
5
12.52
1
2
−
F
3
)
min
⋅
⋅
V
185
≅
. 2
out
)
520
⎞
⎟
⎟
⎠
28
A
⋅
−
V
V
out
μF
2
in(pk)
H
min
⎞
⎟
⎟
⎠
13/62