Motore di ricerca datesheet componenti elettronici
  Italian  ▼
ALLDATASHEETIT.COM

X  

FAN2001 Scheda tecnica(PDF) 2 Page - Fairchild Semiconductor

Il numero della parte FAN2001
Spiegazioni elettronici  PCB Grounding System and High Performance DC-DC Converters
Download  3 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Produttore elettronici  FAIRCHILD [Fairchild Semiconductor]
Homepage  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

FAN2001 Scheda tecnica(HTML) 2 Page - Fairchild Semiconductor

  FAN2001 Datasheet HTML 1Page - Fairchild Semiconductor FAN2001 Datasheet HTML 2Page - Fairchild Semiconductor FAN2001 Datasheet HTML 3Page - Fairchild Semiconductor  
Zoom Inzoom in Zoom Outzoom out
 2 / 3 page
background image
AN-42036
APPLICATION NOTE
2
REV. 1.00 4/05/05
controller, power and battery management, and RF
transceiver. Such a system is shown in Figure 3 with a
general scheme of a “star” ground connection. Ideally, all
grounds would converge on the main star and a single point
ground reference would be generated at that location. It is
physically difficult to bring all the traces on a board to a
physical location and make contact at a mathematical point
to avoid current generated interference. Therefore, the main
star might be broken into sub-stars. This shifts the burden to
coupling signals from one star to another, which have
slightly different, time variable ground reference potentials.
Signal coupling between different blocks would have to be
differential to avoid all ground problems.
Figure 3. Star Ground Connection for a Cell Phone
FAN2011 and FAN2001 Regulators
The FAN2011 and FAN2001 series of regulators uses a
current mode control loop with a fast transient response that
ensures excellent line and load regulation. A star ground
connection ensures that the highest performance is achieved.
The local ground plane for the switching regulator is shown
in Figure 4.
Figure 4. Star Ground Connection for High Performance
DC-DC Converters
To benefit from the high performance of the FAN2011/
FAN2001 families of regulators, care must be taken
designing the PCB layout. The high ground current paths are
identified in Figure 4 by bolded lines. The voltage feedback
signal, internally connected to an error amplifier, is sensitive
to noise and the resistors must be routed separately from the
high current paths. If large ground noise is coupling into the
feedback signal the device may become unstable and
depending on the noise magnitude, the output voltage will be
out of regulation. The internal reference of the device is
connected to AGND pin. This pin should also be routed
separately from the high current paths directly into the
“star.” Any DC offset introduced into the analog ground pin
will affect the load regulation and consequently the
regulator's DC output voltage accuracy. An optimum PCB
layout for the FAN2011 family is shown in Figure 5.
Figure 5. PCB Layout
Switching
Regulator
FAN2001
Positive Supply
Distribution
Local Ground
Plane
Main Star
Analog
Baseband
Digital
Baseband
RF
Transceiver
Audio
Amplifier
Local Ground
Plane
LCD
Controller
CCD/CMOS
Camera
Memory &
I/O ports
FB
PGND
SW
PVIN
VIN
N/C
AGND
FAN2011
Cin
VCC
L
Cout
R2
R1
High ground
current paths
Composite
Top Layer
Bottom Layer


Codice articolo simile - FAN2001

Produttore elettroniciIl numero della parteScheda tecnicaSpiegazioni elettronici
logo
Fairchild Semiconductor
FAN2001 FAIRCHILD-FAN2001 Datasheet
329Kb / 11P
   1A High-Efficiency Step-Down DC-DC Converter
logo
ON Semiconductor
FAN2001 ONSEMI-FAN2001 Datasheet
451Kb / 13P
   1A High-Efficiency Step-Down DC-DC Converter
April 2005 Rev. 1.0.2
FAN2001 ONSEMI-FAN2001 Datasheet
451Kb / 13P
   1A High-Efficiency Step-Down DC-DC Converter
April 2005 Rev. 1.0.2
logo
Fairchild Semiconductor
FAN2001MPX FAIRCHILD-FAN2001MPX Datasheet
329Kb / 11P
   1A High-Efficiency Step-Down DC-DC Converter
logo
ON Semiconductor
FAN2001MPX ONSEMI-FAN2001MPX Datasheet
451Kb / 13P
   1A High-Efficiency Step-Down DC-DC Converter
April 2005 Rev. 1.0.2
More results

Descrizione simile - FAN2001

Produttore elettroniciIl numero della parteScheda tecnicaSpiegazioni elettronici
logo
Rohm
BH6172GU1 ROHM-BH6172GU1 Datasheet
539Kb / 19P
   System Regulator with High Efficiency DC/DC Converters
BH6172GU ROHM-BH6172GU_11 Datasheet
388Kb / 17P
   System Regulator with High Efficiency DC/DC Converters
logo
JILIN SINO-MICROELECTRO...
JCS75N75F JSMC-JCS75N75F Datasheet
1Mb / 11P
   High efficiency switching DC/DC converters and
logo
Toshiba Semiconductor
TPCA8009-H TOSHIBA-TPCA8009-H Datasheet
105Kb / 4P
   High Speed and High Efficiency DC-DC Converters
TPCA8010-H TOSHIBA-TPCA8010-H Datasheet
41Kb / 4P
   High Speed and High Efficiency DC-DC Converters
logo
List of Unclassifed Man...
SUS1R5 ETC2-SUS1R5 Datasheet
656Kb / 8P
   DC-DC Converters PCB Mount type
logo
COSEL CO., LTD.
SFS10 COSEL-SFS10 Datasheet
1Mb / 8P
   DC-DC Converters PCB Mount Type
logo
List of Unclassifed Man...
ZUS1R52405 ETC2-ZUS1R52405 Datasheet
492Kb / 12P
   DC-DC Converters PCB Mount type
logo
COSEL CO., LTD.
SFCS15 COSEL-SFCS15 Datasheet
601Kb / 4P
   DC-DC Converters PCB Mount Type
SUW1R50515 COSEL-SUW1R50515 Datasheet
240Kb / 11P
   DC-DC Converters PCB Mount Type
June 26, 2020
More results


Html Pages

1 2 3


Scheda tecnica Scarica

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEETIT.COM
Lei ha avuto il aiuto da alldatasheet?  [ DONATE ] 

Di alldatasheet   |   Richest di pubblicita   |   contatti   |   Privacy Policy   |   scambio Link   |   Ricerca produttore
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