Electronic Components Datasheet Search
  English  ▼

X  

Preview PDF HTML

PM6670AS Datasheet(PDF) 48 Page - STMicroelectronics

Part # PM6670AS
Description  Complete DDR2/3 memory power supplies controller
PDF  54 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

PM6670AS Datasheet(HTML) 48 Page - STMicroelectronics

Back Button PM6670AS Datasheet HTML 44Page - STMicroelectronics PM6670AS Datasheet HTML 45Page - STMicroelectronics PM6670AS Datasheet HTML 46Page - STMicroelectronics PM6670AS Datasheet HTML 47Page - STMicroelectronics PM6670AS Datasheet HTML 48Page - STMicroelectronics PM6670AS Datasheet HTML 49Page - STMicroelectronics PM6670AS Datasheet HTML 50Page - STMicroelectronics PM6670AS Datasheet HTML 51Page - STMicroelectronics PM6670AS Datasheet HTML 52Page - STMicroelectronics Next Button
Zoom Inzoom in Zoom Outzoom out
 48 / 54 page
background image
Application information
PM6670AS
48/54
8.1.7
All ceramic capacitors application
Design of external feedback network depends on the output voltage ripple across the output
capacitors' ESR. If the ripple is great enough (at least 20 mV), the compensation network
simply consists of a CINT capacitor.
Figure 40. Integrative compensation
The stability of the system depends firstly on the output capacitor zero frequency. It must be
verified that:
Equation 48
where k is a free design parameter greater than unity (k > 3) . It determines the minimum
integrator capacitor value CINT:
Equation 49
CFILT
CINT
RINT
gm
+
-
Vr=0.9
VSNS
Ton One-shot
generator
VREF
PWM
Comparator
+
-
COMP
VDDQ
Integrator
out
out
Zout
SW
C
R
2
k
f
k
f
⋅
π
=
⋅
>
Vo
Vref
f
k
f
2
g
C
Zout
SW
m
INT
⋅
⎟
⎠
⎞
⎜
⎝
⎛
−
⋅
π
>



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 44 45 46 47 48 49 50 51 52 53 54


Datasheet Download

Go To PDF Page


Link URL



Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Link to Datasheet    |   Link Exchange   |   Manufacturer List
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