Os motores de busca de Datasheet de Componentes eletrônicos
  Portuguese  ▼
ALLDATASHEETPT.COM

X  

Preview PDF HTML

L5953 Folha de dados(PDF) 28 Page - STMicroelectronics

Nome de Peças L5953
Descrição Electrónicos  Multiple switching voltage regulator
PDF  31 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L5953 Folha de dados(HTML) 28 Page - STMicroelectronics

Back Button L5953 Datasheet HTML 23Page - STMicroelectronics L5953 Datasheet HTML 24Page - STMicroelectronics L5953 Datasheet HTML 25Page - STMicroelectronics L5953 Datasheet HTML 26Page - STMicroelectronics L5953 Datasheet HTML 27Page - STMicroelectronics L5953 Datasheet HTML 28Page - STMicroelectronics L5953 Datasheet HTML 29Page - STMicroelectronics L5953 Datasheet HTML 30Page - STMicroelectronics L5953 Datasheet HTML 31Page - STMicroelectronics  
Zoom Inzoom in Zoom Outzoom out
 28 / 31 page
background image
Application note
L5953
28/31
1. Fix the cross-over frequency fC of the overall loop gain. Usually:
where fsw,min is the minimum switching frequency
2. Calculate the high frequency error amplifier gain
3. Chose R3 and calculate
The value for R3 has not to be very high (for example 10K
Ω) so to limit the error due to an
error amplifier input offset current.
4. Calculate
5. Finally calculate
and
f
c
0.1 f
sw,min
⋅
=
G
c
0.25 f
c 2 π
L1
ESR
-------------
⋅
⋅⋅⋅
=
C8
2
L1 C7
⋅
R3
-----------------------
⋅
=
R
p
R3
2
ESR
-------------
L1
C7
--------
⋅
⎝⎠
⎛⎞
1
–
---------------------------------------------
=
R1
R
p
V
O
V
ref PWM
,
--------------------------
⋅
=
R2
R
p
1
V
ref,PWM
V
O
-------------------------
–
----------------------------------
=
R4
G
C R1
⋅
=
C9
2
L1 C7
⋅
R4
-----------------------
⋅
=



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


Folha de dados Download

Go To PDF Page


Ligação URL



ALLDATASHEET é útil para você?  [ DONATE ] 

Sobre Alldatasheet   |   Publicidade   |   Contato conosco   |   Privacy Policy   |   Link para a ficha técnica    |   roca de Link   |   Lista de Fabricantes
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