Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.COM

X  

NCP12401EBAAA1 Datasheet(PDF) 37 Page - ON Semiconductor

Part # NCP12401EBAAA1
Description  Fixed Frequency Current Mode Controller for Flyback Converters
Download  44 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

NCP12401EBAAA1 Datasheet(HTML) 37 Page - ON Semiconductor

Back Button NCP12401EBAAA1 Datasheet HTML 33Page - ON Semiconductor NCP12401EBAAA1 Datasheet HTML 34Page - ON Semiconductor NCP12401EBAAA1 Datasheet HTML 35Page - ON Semiconductor NCP12401EBAAA1 Datasheet HTML 36Page - ON Semiconductor NCP12401EBAAA1 Datasheet HTML 37Page - ON Semiconductor NCP12401EBAAA1 Datasheet HTML 38Page - ON Semiconductor NCP12401EBAAA1 Datasheet HTML 39Page - ON Semiconductor NCP12401EBAAA1 Datasheet HTML 40Page - ON Semiconductor NCP12401EBAAA1 Datasheet HTML 41Page - ON Semiconductor Next Button
Zoom Inzoom in Zoom Outzoom out
 37 / 44 page
background image
NCP12401
www.onsemi.com
37
Figure 70. Block Schematic of Overpower Protection Circuit
A 5−bit A/D converter with the peak detector senses the
ac input, and its output is periodically sampled and reset, in
order to follow closely the input voltage variations. The
sample and reset events are given by the output from the ac
line unplug detector. The sensed HV pin voltage peak value
is validated when no HV edges from comparator are present
after last falling edge during 2 sample clocks. See Figure 71
for details.
Overcurrent Protection with Fault Timer
The overload protection depends only on the current
sensing signal, making it able to work with any transformer,
even with very poor coupling or high leakage inductance.
When an overcurrent occurs on the output of the power
supply, the FB loop asks for more power than the controller
can deliver, and the CS set−point reaches VILIM. When this
event occurs, an internal tfault timer is started: once the timer
times out, DRV pulses are stopped and the controller is either
latched off. This latch is released in autorecovery mode. The
controller tries to restart after tautorec. The other possibilities
of the latch release are the brown−out condition or the VCC
power on reset. The timer is reset when the CS set−point
goes back below VILIM before the timer elapses. The fault
timer is also started if the driver signal is reset by the
maximum on time. The controller also enters the same
protection mode if the voltage on the CS pin reaches 1.5
times the maximum internal set−point VCS(stop) (allows to
detect winding short−circuits) or there appears low VCC
supply. See Figure 71 for the timing diagram.


Similar Part No. - NCP12401EBAAA1

ManufacturerPart #DatasheetDescription
logo
ON Semiconductor
NCP1240 ONSEMI-NCP1240 Datasheet
1Mb / 45P
   Fixed Frequency Current Mode Controller
July, 2015 ??Rev. 1
NCP12400 ONSEMI-NCP12400 Datasheet
4Mb / 46P
   Fixed Frequency Current Mode Controller for Flyback Converters
October, 2019 ??Rev. 5
NCP12400 ONSEMI-NCP12400 Datasheet
4Mb / 47P
   Fixed Frequency Current Mode Controller for Flyback Converters
February, 2022 - Rev. 8
NCP12400AAAAA0 ONSEMI-NCP12400AAAAA0 Datasheet
4Mb / 46P
   Fixed Frequency Current Mode Controller for Flyback Converters
October, 2019 ??Rev. 5
NCP12400AAAAA1 ONSEMI-NCP12400AAAAA1 Datasheet
4Mb / 46P
   Fixed Frequency Current Mode Controller for Flyback Converters
October, 2019 ??Rev. 5
More results

Similar Description - NCP12401EBAAA1

ManufacturerPart #DatasheetDescription
logo
ON Semiconductor
NCP1246 ONSEMI-NCP1246 Datasheet
1Mb / 38P
   Fixed Frequency Current Mode Controller for Flyback Converters
April, 2012 Rev. P0
NCP1234 ONSEMI-NCP1234 Datasheet
284Kb / 33P
   Fixed Frequency Current Mode Controller for Flyback Converters
October, 2011 ??Rev. 1
NCP1246-D ONSEMI-NCP1246-D Datasheet
1Mb / 39P
   Fixed Frequency Current Mode Controller for Flyback Converters
October, 2012 ??Rev. 1
NCP12400 ONSEMI-NCP12400 Datasheet
4Mb / 46P
   Fixed Frequency Current Mode Controller for Flyback Converters
October, 2019 ??Rev. 5
NCP1236AD65R2G ONSEMI-NCP1236AD65R2G Datasheet
302Kb / 34P
   Fixed Frequency Current Mode Controller for Flyback Converters
April, 2013 ??Rev. 3
NCP1288 ONSEMI-NCP1288 Datasheet
274Kb / 32P
   Fixed Frequency Current Mode Controller for Flyback Converters
February, 2010 ??Rev. 1
NCP1236 ONSEMI-NCP1236 Datasheet
295Kb / 34P
   Fixed Frequency Current Mode Controller for Flyback Converters
January, 2012 ??Rev. 2
NCP1246 ONSEMI-NCP1246_V01 Datasheet
1Mb / 41P
   Fixed Frequency Current Mode Controller for Flyback Converters
March, 2017 - Rev. 7
NCP12400 ONSEMI-NCP12400_V01 Datasheet
4Mb / 47P
   Fixed Frequency Current Mode Controller for Flyback Converters
February, 2022 - Rev. 8
NCP1246 ONSEMI-NCP1246_12 Datasheet
1Mb / 39P
   Fixed Frequency Current Mode Controller for Flyback Converters
October, 2012 ??Rev. 1
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 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44


Datasheet Download

Go To PDF Page


Link URL




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

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   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