Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.NET

X  

IR3637STRPBF Datasheet(PDF) 11 Page - International Rectifier

Part # IR3637STRPBF
Description  1% ACCURATE SYNCHRONOUS PWM CONTROLLER
Download  21 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  IRF [International Rectifier]
Direct Link  http://www.irf.com
Logo IRF - International Rectifier

IR3637STRPBF Datasheet(HTML) 11 Page - International Rectifier

Back Button IR3637STRPBF Datasheet HTML 7Page - International Rectifier IR3637STRPBF Datasheet HTML 8Page - International Rectifier IR3637STRPBF Datasheet HTML 9Page - International Rectifier IR3637STRPBF Datasheet HTML 10Page - International Rectifier IR3637STRPBF Datasheet HTML 11Page - International Rectifier IR3637STRPBF Datasheet HTML 12Page - International Rectifier IR3637STRPBF Datasheet HTML 13Page - International Rectifier IR3637STRPBF Datasheet HTML 14Page - International Rectifier IR3637STRPBF Datasheet HTML 15Page - International Rectifier Next Button
Zoom Inzoom in Zoom Outzoom out
 11 / 21 page
background image
IR3637SPBF
11
Rev. 1.1
06/16/05
www.irf.com
6)
Place second pole at the ESR zero.
FP2 = FESR
Check if R8 >
If R8 is too small, increase R7 and start from step 2.
7)
Place second zero around the resonant frequency.
FZ2 = FLC
8)
Use equation (1) to calculate R5.
These design rules will give a crossover frequency ap-
proximately one-tenth of the switching frequency. The
higher the band width, the potentially faster the load tran-
sient speed. The gain margin will be large enough to
provide high DC-regulation accuracy (typically -5dB to -
12dB). The phase margin should be greater than 45 for
overall stability.
Based on the frequency of the zero generated by ESR
versus crossover frequency, the compensation type can
be different. The table below shows the compensation
type and location of crossover frequency.
Layout Consideration
The layout is very important when designing high fre-
quency switching converters. Layout will affect noise
pickup and can cause a good design to perform with
less than expected results.
Start to place the power components, make all the con-
nection in the top layer with wide, copper filled areas.
The inductor, output capacitor and the MOSFET should
be close to each other as possible. This helps to reduce
the EMI radiated by the power traces due to the high
switching currents through them. Place input capacitor
directly to the drain of the high-side MOSFET, to reduce
the ESR replace the single input capacitor with two par-
allel units. The feedback part of the system should be
kept away from the inductor and other noise sources,
and be placed close to the IC. In multilayer PCB use
one layer as power ground plane and have a control cir-
cuit ground (analog ground), to which all signals are ref-
erenced. The goal is to localize the high current path to
a separate loop that does not interfere with the more
sensitive analog control function. These two grounds
must be connected together on the PC board layout at a
single point.
1
gm
R8 =
1
2
π × C10 × FP2
R6 =
- R8
1
2
π × C10 × FZ2
R5 =
× R6
VREF
VOUT - VREF
Compensator
Type
Type II (PI)
Type III (PID)
Method A
Type III (PID)
Method B
Location of Zero
Crossover Frequency
(FO)
FLC < FESR < FO < fS/2
FLC < FO < FESR < fS/2
FLC < FO < fS/2 < FESR
Typical
Output
Capacitor
Electrolytic,
Tantalum
Tantalum,
Ceramic
Ceramic
Table - The compensation type and location of zero
crossover frequency.
Detail information is dicussed in application Note AN-
1043 which can be downloaded from the IR Web-Site.
All design should be tested for stability to verify the cal-
culated values.


Similar Part No. - IR3637STRPBF

ManufacturerPart #DatasheetDescription
logo
International Rectifier
IR3637ASPBF IRF-IR3637ASPBF Datasheet
688Kb / 19P
   1% ACCURATE SYNCHRONOUS PWM CONTROLLER
IR3637ASTRPBF IRF-IR3637ASTRPBF Datasheet
688Kb / 19P
   1% ACCURATE SYNCHRONOUS PWM CONTROLLER
More results

Similar Description - IR3637STRPBF

ManufacturerPart #DatasheetDescription
logo
International Rectifier
IR3637ASPBF IRF-IR3637ASPBF Datasheet
688Kb / 19P
   1% ACCURATE SYNCHRONOUS PWM CONTROLLER
logo
Feeling Technology Corp...
FP5101 FEELING-FP5101 Datasheet
734Kb / 20P
   1 Channel Synchronous PWM Controller
logo
List of Unclassifed Man...
AT1392 ETC1-AT1392 Datasheet
254Kb / 8P
   1-Channel Synchronous Buck PWM Controller
logo
Diodes Incorporated
AP2014 DIODES-AP2014_09 Datasheet
270Kb / 14P
   SYNCHRONOUS PWM CONTROLLER
AP2014/A Rev. 5
logo
ON Semiconductor
NCP3011 ONSEMI-NCP3011_15 Datasheet
369Kb / 28P
   Synchronous PWM Controller
September, 2015 ??Rev. 4
NCV3011DTBR2G ONSEMI-NCV3011DTBR2G Datasheet
412Kb / 28P
   Synchronous PWM Controller
June, 2011 ??Rev. 3
logo
Anachip Corp
AP2002 ANACHIP-AP2002 Datasheet
180Kb / 7P
   Synchronous PWM Controller
AP2007 ANACHIP-AP2007 Datasheet
181Kb / 7P
   Synchronous PWM Controller
logo
ON Semiconductor
NCP3012 ONSEMI-NCP3012 Datasheet
354Kb / 26P
   Synchronous PWM Controller
May, 2010 ??Rev. 0
NCV3020ADR2G ONSEMI-NCV3020ADR2G Datasheet
778Kb / 23P
   Synchronous PWM Controller
January, 2013 ??Rev. 6
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.NET
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   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