поискавой системы для электроныых деталей
  Russian  ▼
ALLDATASHEETRU.COM

X  

Preview PDF HTML

AN938 датащи(PDF) 23 Page - STMicroelectronics

номер детали AN938
подробное описание детали  The L4973 family is a 3.5 A monolithic DC-DC converter
PDF  33 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN938 датащи(HTML) 23 Page - STMicroelectronics

Back Button AN938 Datasheet HTML 19Page - STMicroelectronics AN938 Datasheet HTML 20Page - STMicroelectronics AN938 Datasheet HTML 21Page - STMicroelectronics AN938 Datasheet HTML 22Page - STMicroelectronics AN938 Datasheet HTML 23Page - STMicroelectronics AN938 Datasheet HTML 24Page - STMicroelectronics AN938 Datasheet HTML 25Page - STMicroelectronics AN938 Datasheet HTML 26Page - STMicroelectronics AN938 Datasheet HTML 27Page - STMicroelectronics Next Button
Zoom Inzoom in Zoom Outzoom out
 23 / 33 page
background image
AN938
Typical application
Doc ID 5410 Rev 10
23/33
3.9
PWM gain
Equation 15
where Vct is the peak-to-peak sawtooth oscillator.
Pole and zero values are as follows:
Equation 16
Equation 17
Equation 18
Equation 19
Equation 20
The compensation is found by choosing Focomp close to the frequency of the double pole
introduced by the LC filter.
Using a compensation network with R1 = 15 k
Ω, C6 = 22 nF and C5 = 150 pF, the gain and
phase bode plots are shown in Figure 32-34. The cutoff frequency Fc is 22 KHz and the
phase margin is 52°C.
V
CC
V
ct
-----------
V
CC
6
⋅
V
CC
1
–
--------------------
6
≈
=
F
o
1
2
πR
esr
C
out
⋅
⋅
---------------------------------------
1
2
π 0.065 300 10
6
–
⋅⋅
⋅
⋅
-------------------------------------------------------------
8.162KHz
==
=
F
p
1
2
π
LC
out
⋅
⋅⋅
---------------------------------------
1
2
π
68 10
6
–
300 10
6
–
⋅⋅
⋅
⋅⋅
--------------------------------------------------------------------------
1.087kHz
==
=
F
ocomp
1
2
π R
c
C
c
⋅⋅
⋅
---------------------------------
1
2
π 15 10
3
22 10
9
–
⋅⋅
⋅
⋅
⋅
----------------------------------------------------------------
492Hz
==
=
F
p1
1
2
π R
o
C
c
⋅⋅
⋅
----------------------------------
1
2
π 1.2 10
6
22 10
9
–
⋅⋅
⋅
⋅
⋅
-----------------------------------------------------------------
6.029Hz
==
=
F
p2
1
2
π R
c
C
o
⋅⋅
⋅
----------------------------------
1
2
π 15 10
3
150 10
12
–
⋅⋅
⋅
⋅
⋅
---------------------------------------------------------------------
70KHz
==
=



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


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