поискавой системы для электроныых деталей
  Russian  ▼
ALLDATASHEETRU.COM

X  

Preview PDF HTML

AN2782 датащи(PDF) 22 Page - STMicroelectronics

номер детали AN2782
подробное описание детали  Solution for designing a 400 W fixed-off-time controlled
PDF  39 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN2782 датащи(HTML) 22 Page - STMicroelectronics

Back Button AN2782 Datasheet HTML 18Page - STMicroelectronics AN2782 Datasheet HTML 19Page - STMicroelectronics AN2782 Datasheet HTML 20Page - STMicroelectronics AN2782 Datasheet HTML 21Page - STMicroelectronics AN2782 Datasheet HTML 22Page - STMicroelectronics AN2782 Datasheet HTML 23Page - STMicroelectronics AN2782 Datasheet HTML 24Page - STMicroelectronics AN2782 Datasheet HTML 25Page - STMicroelectronics AN2782 Datasheet HTML 26Page - STMicroelectronics Next Button
Zoom Inzoom in Zoom Outzoom out
 22 / 39 page
background image
Designing a fixed off-time PFC
AN2782
22/39
Doc ID 14763 Rev 2
Figure 14.
Multiplier characteristics family
A complete description is given in Figure 14, which shows the typical multiplier
characteristics family. The linear operation of the multiplier is guaranteed within the range 0
to 3 V of VMULT and the range 0 to 1.16 V (typ) of VCS, while the minimum guaranteed value
of the maximum slope of the characteristics family (typ) is:
Taking this into account, the following is the suggested procedure to properly set the
operating point of the multiplier.
First, the maximum peak value for VMULT, VMULTmax is selected. This value, which occurs at
maximum mains voltage, should be 3 V or nearly so in wide range mains and less in case of
single mains. The sense resistor selected is Rs = 0.117 Ω and it is described in the
paragraph concerning pin 4 of this section. The maximum peak value, occurring at
maximum mains voltage, is:
where ILpksat and Rs have been already calculated, and 1.1 V/V is the multiplier maximum
slope, as given in the datasheet.
(60)
(61)
Multiplier characteristic
-0.1
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
0.00.2 0.40.6 0.81.0 1.21.4 1.61.8 2.02.2 2.42.6 2.8 3.0
VMULT (pin3) (V)
V COMP (pin2) (V)
Upper Volt. Clamp
2.5 V
3 V
3.5V
4 V
5.75 V
4.5V
5 V
V
V
1
.
1
dV
dV
MULT
CS
=
min
max
s
pksat
max
VAC
VAC
1
.
1
R
IL
VMULT
⋅
⋅
=
V
02
.
3
Vac
90
Vac
265
1
.
1
117
.
0
A
67
.
9
VMULT
max
=
⋅
Ω
⋅
=



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


датащи скачать

Go To PDF Page


ссылки URL



Вашему бизинису помогли Аллдатащит?  [ DONATE ] 

Что такое Аллдатащит   |   реклама   |   контакт   |   Конфиденциальность   |   Ссылка на техническое описание    |   обмен ссыками   |   поиск по производителю
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