công cụ tìm kiếm bảng dữ liệu linh kiện điện tử
  Vietnamese  ▼
ALLDATASHEET.VN

X  

Preview PDF HTML

AN4149 bảng dữ liệu(PDF) 13 Page - STMicroelectronics

tên linh kiện AN4149
Giải thích chi tiết về linh kiện  Designing a CCM PFC pre-regulator based on the L4984D
PDF  43 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN4149 bảng dữ liệu(HTML) 13 Page - STMicroelectronics

Back Button AN4149 Datasheet HTML 9Page - STMicroelectronics AN4149 Datasheet HTML 10Page - STMicroelectronics AN4149 Datasheet HTML 11Page - STMicroelectronics AN4149 Datasheet HTML 12Page - STMicroelectronics AN4149 Datasheet HTML 13Page - STMicroelectronics AN4149 Datasheet HTML 14Page - STMicroelectronics AN4149 Datasheet HTML 15Page - STMicroelectronics AN4149 Datasheet HTML 16Page - STMicroelectronics AN4149 Datasheet HTML 17Page - STMicroelectronics Next Button
Zoom Inzoom in Zoom Outzoom out
 13 / 43 page
background image
DocID023523 Rev 2
13/43
AN4149
Designing a CCM FOT-controlled PFC
The maximum value of the RMS current circulating in the boost cell at the minimum line
voltage of the selected range is equal to:
Maximum RMS input current:
Equation 28
In order to describe the energy and relevant equations concerning a boost PFC, the ratios of
the voltage inputs of the boost converter to the regulated output voltage are defined. In
particular kmin and kmax refer to the ratio of the minimum and the maximum input voltage to
the output voltage, respectively.
Equation 29
Combining equation 28 and equation 29 the maximum line peak current can be found.
Maximum line peak current:
Equation 30
Maximum inductor peak current:
Equation 31
Inductor peak-to-peak ripple current :
Equation 32
In order to calculate the losses of the switches, the RMS current flowing through the
MOSFET and through the boost output diode are found.
Maximum RMS switch current:
PF
VAC
P
I
in
in
⋅
=
min
A
Vac
W
I
in
27
.
4
99
.
0
90
4
.
380
=
⋅
=
out
V
VAC
k
min
min
2
=
out
V
VAC
k
max
max
2
=
32
.
0
400
90
2
max
=
=
V
Vac
k
94
.
0
400
265
2
max
=
=
V
Vac
k
out
in
PK
V
k
P
I
⋅
⋅
=
min
max
2
A
V
W
I
PK
98
.
5
400
32
.
0
4
.
380
2
max
=
⋅
⋅
=
+
⋅
⋅
⋅
=
2
1
2
min
max
r
AC
in
PK
K
PF
V
P
IL
A
V
W
IL
PK
85
.
6
2
27
.
0
1
99
.
0
90
4
.
380
2
max
=
+
⋅
⋅
⋅
=
max
max
PK
r
PK
IL
K
IL
⋅
=
Δ
A
A
IL
PK
85
.
1
85
.
6
27
.
0
ma x
=
⋅
=
Δ



Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43


bảng dữ liệu tải về

Go To PDF Page


Link URL



Cho đến nay ALLDATASHEET có giúp ích cho doanh nghiệp của bạn hay không?  [ DONATE ] 

Alldatasheet là   |   Quảng cáo   |   Liên lạc với chúng tôi   |   Chính sách bảo mật   |   Liên kết đến bảng dữ liệu    |   Trao đổi link   |   Tìm kiếm theo nhà sản xuất
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com