поискавой системы для электроныых деталей
  Russian  ▼
ALLDATASHEETRU.COM

X  

Preview PDF HTML

ADP2323ACPZ-R7 датащи(PDF) 22 Page - Analog Devices

номер детали ADP2323ACPZ-R7
подробное описание детали  Dual 3 A, 20 V Synchronous Step-Down Regulator with Integrated High-Side MOSFET
PDF  32 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
производитель  AD [Analog Devices]
домашняя страница  http://www.analog.com
Logo AD - Analog Devices

ADP2323ACPZ-R7 датащи(HTML) 22 Page - Analog Devices

Back Button ADP2323ACPZ-R7 Datasheet HTML 18Page - Analog Devices ADP2323ACPZ-R7 Datasheet HTML 19Page - Analog Devices ADP2323ACPZ-R7 Datasheet HTML 20Page - Analog Devices ADP2323ACPZ-R7 Datasheet HTML 21Page - Analog Devices ADP2323ACPZ-R7 Datasheet HTML 22Page - Analog Devices ADP2323ACPZ-R7 Datasheet HTML 23Page - Analog Devices ADP2323ACPZ-R7 Datasheet HTML 24Page - Analog Devices ADP2323ACPZ-R7 Datasheet HTML 25Page - Analog Devices ADP2323ACPZ-R7 Datasheet HTML 26Page - Analog Devices Next Button
Zoom Inzoom in Zoom Outzoom out
 22 / 32 page
background image
ADP2323
Data Sheet
Rev. A | Page 22 of 32
RESR is the equivalent series resistance of the output capacitor.
The ADP2323 uses a transconductance amplifier for the error
amplifier to compensate the system. Figure 47 shows the
simplified peak current-mode control small signal circuit.
RESR
R
+
–
g
m
RC
CCP
COUT
CC
RTOP
RBOT
–
+
AVI
VOUT
VCOMP
VOUT
Figure 47. Simplified Peak Current-Mode Control Small Signal Circuit
The compensation components, RC and CC, contribute a zero,
and the optional CCP and RC contribute an optional pole.
The closed-loop transfer equation is as follows:
)
(
1
1
)
(
s
G
s
C
C
C
C
R
s
s
C
R
C
C
g
R
R
R
s
T
vd
CP
C
CP
C
C
C
C
CP
C
m
TOP
BOT
BOT
V
×


×
+
×
×
+
×
×
×
+
×
+
−
×
+
=
The following design guideline shows how to select the
compensation components, RC, CC, and CCP, for ceramic output
capacitor applications.
1. Determine the cross frequency (fC). Generally, the fC is
between fSW/12 and fSW/6.
2. RC can be calculated using the following equation:
VI
m
C
OUT
OUT
C
A
g
f
C
V
R
×
×
×
×
×
π
×
=
V
6
.
0
2
3. Place the compensation zero at the domain pole (fP).
CC can be determined by
(
)
C
OUT
ESR
C
R
C
R
R
C
×
+
=
4. CCP is optional. It can be used to cancel the zero caused by
the ESR of the output capacitor.
C
OUT
ESR
CP
R
C
R
C
×
=
The ADP2323 has a 10 pF capacitor internally at the
COMPx pin; therefore, if CCP is smaller than 10 pF, no
external capacitor is needed.



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


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