Moteur de recherche de fiches techniques de composants électroniques
  French  ▼
ALLDATASHEET.FR

X  

SD25-2R2-R Fiches technique(PDF) 1 Page - Cooper Bussmann, Inc.

No de pièce SD25-2R2-R
Description  Switching Regulators
Download  4 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricant  COOPER [Cooper Bussmann, Inc.]
Site Internet  http://www.cooperbussmann.com
Logo COOPER - Cooper Bussmann, Inc.

SD25-2R2-R Fiches technique(HTML) 1 Page - Cooper Bussmann, Inc.

  SD25-2R2-R Datasheet HTML 1Page - Cooper Bussmann, Inc. SD25-2R2-R Datasheet HTML 2Page - Cooper Bussmann, Inc. SD25-2R2-R Datasheet HTML 3Page - Cooper Bussmann, Inc. SD25-2R2-R Datasheet HTML 4Page - Cooper Bussmann, Inc.  
Zoom Inzoom in Zoom Outzoom out
 1 / 4 page
background image
Introduction/Basic Operation
In switching regulator applications the inductor is used as an energy
storage device. When the semiconductor switch is on the current in the
inductor ramps up and energy is stored. When the switch turns off energy
is released into the load. The amount of energy stored is calculated by the
formula EEnneerrggyy =
= ½
½LL..II²² (Joules), where:
• L is the inductance in Henrys
• I is the peak value of inductor current
The amount by which the current changes during a switching cycle is
known as the ripple current. Ripple current is defined as V
Vll =
= LL..ddii//ddtt::
•Vl is the voltage across the inductor
• di is the ripple current
• dt is the duration for which the voltage is applied
Inductor current is made up of AC and DC components (Figure 1). The AC
component is high frequency and will flow through the output capacitor
because it has a low HF impedance. A ripple voltage is produced due to
the capacitor ‘equivalent series resistance’ (ESR) that will appear at the
output of the switching regulator. This ripple voltage needs to be
sufficiently low as not to effect the operation of the circuit the regulator is
supplying, normally in the order of 10-500mVpk-pk.
Selecting the correct ripple current impacts the size of the inductor and
output capacitor. The capacitor needs to have a sufficiently high ripple
current rating or it will overheat and dry out. To achieve a good
compromise between inductor and capacitor size a ripple current value of
10-30% of maximum inductor current should be chosen. The current in
the inductor will be continuous for output currents greater that 5-15% of
full load.
The following parameters need to be defined or calculated to select an
inductor:
• Maximum input voltage
• Output voltage
• Switching frequency
• Maximum ripple current
• Duty cycle
0
1
2
I load
I inductor
dI
V out
ESR
Figure 1:
Buck Inductor
Inductor Selection for Switching Regulators
SD3814


Numéro de pièce similaire - SD25-2R2-R

FabricantNo de pièceFiches techniqueDescription
logo
Cooper Bussmann, Inc.
SD25-2R2-R COOPER-SD25-2R2-R Datasheet
309Kb / 7P
   SD Series High Power Density, Low Profile, Shielded Inductors
SD25-2R2-R COOPER-SD25-2R2-R Datasheet
309Kb / 7P
   SD Series High Power Density, Low Profile, Shielded Inductors
logo
Eaton All Rights Reserv...
SD25-2R2-R EATON-SD25-2R2-R Datasheet
746Kb / 9P
   Low profile metalized shielded drum core power inductors
More results

Description similaire - SD25-2R2-R

FabricantNo de pièceFiches techniqueDescription
logo
Tiger Electronic Co.,Lt...
MC33063ADR2G TGS-MC33063ADR2G Datasheet
2Mb / 7P
   Switching Regulators
logo
IK Semicon Co., Ltd
IK1509-XX IKSEMICON-IK1509-XX Datasheet
103Kb / 6P
   Switching Voltage Regulators
IL2596-XX IKSEMICON-IL2596-XX Datasheet
587Kb / 12P
   Switching Voltage Regulators
logo
Toshiba Semiconductor
TK17A25D TOSHIBA-TK17A25D Datasheet
223Kb / 9P
   Switching Voltage Regulators
TK20E60U TOSHIBA-TK20E60U Datasheet
250Kb / 9P
   Switching Voltage Regulators
TK65A10N1 TOSHIBA-TK65A10N1 Datasheet
243Kb / 9P
   Switching Voltage Regulators
TK6A45DA TOSHIBA-TK6A45DA Datasheet
233Kb / 9P
   Switching Voltage Regulators
TK6Q60W TOSHIBA-TK6Q60W Datasheet
247Kb / 10P
   Switching Voltage Regulators
TK100E08N1 TOSHIBA-TK100E08N1 Datasheet
251Kb / 9P
   Switching Voltage Regulators
TK8P60W TOSHIBA-TK8P60W Datasheet
301Kb / 10P
   Switching Voltage Regulators
More results


Html Pages

1 2 3 4


Fiches technique Télécharger

Go To PDF Page


Lien URL




Politique de confidentialité
ALLDATASHEET.FR
ALLDATASHEET vous a-t-il été utile ?  [ DONATE ] 

À propos de Alldatasheet   |   Publicité   |   Contactez-nous   |   Politique de confidentialité   |   Echange de liens   |   Fabricants
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