Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.NET

X  

UCC2943-ADJ Datasheet(PDF) 5 Page - List of Unclassifed Manufacturers

Part # UCC2943-ADJ
Description  1V Synchronous Boost Converter
Download  11 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  ETC1 [List of Unclassifed Manufacturers]
Direct Link  
Logo ETC1 - List of Unclassifed Manufacturers

UCC2943-ADJ Datasheet(HTML) 5 Page - List of Unclassifed Manufacturers

  UCC2943-ADJ Datasheet HTML 1Page - List of Unclassifed Manufacturers UCC2943-ADJ Datasheet HTML 2Page - List of Unclassifed Manufacturers UCC2943-ADJ Datasheet HTML 3Page - List of Unclassifed Manufacturers UCC2943-ADJ Datasheet HTML 4Page - List of Unclassifed Manufacturers UCC2943-ADJ Datasheet HTML 5Page - List of Unclassifed Manufacturers UCC2943-ADJ Datasheet HTML 6Page - List of Unclassifed Manufacturers UCC2943-ADJ Datasheet HTML 7Page - List of Unclassifed Manufacturers UCC2943-ADJ Datasheet HTML 8Page - List of Unclassifed Manufacturers UCC2943-ADJ Datasheet HTML 9Page - List of Unclassifed Manufacturers Next Button
Zoom Inzoom in Zoom Outzoom out
 5 / 11 page
background image
5
UCC2941-3/-5/-ADJ
UCC3941-3/-5/-ADJ
Figure 2. Inductor current and output ripple waveforms.
APPLICATION INFORMATION (cont.)
UDG-96117
At time
t1, the 3.3V output drops below its lower thresh-
old, and the inductor is charged with an on time deter-
mined by:
T
s
VIN
ON =
12
µ
For a 1.25V input, and a 22
µH inductor, the resulting
peak current is approximately 500mA. At time
t2, the in-
ductor begins to discharge with a minimum off time of
1.7
µs. Under lightly loaded conditions, the amount of en-
ergy delivered in this single pulse would satisfy the volt-
age control loop, and the converter would not command
any more energy pulses until the output again drops be-
low the lower voltage threshold.
At time
t3, the VGD supply has dropped below its lower
threshold, but the output voltage is still above its thresh-
old point. This results in an energy pulse to the gate drive
supply at
t4. However, while the gate drive is being serv-
iced, the output voltage has dropped below its lower
threshold, so the state machine commands an energy
pulse to the output as soon as the gate drive pulse is
completed.
Time
t6, represents a transition between light and heavy
load. A single energy pulse is not sufficient to force the
output voltage above its upper threshold before the mini-
mum off time has expired, and a second charge cycle is
commanded. Since the inductor current does not reach
zero in this case, the peak current is greater than 0.5A at
the end of the next charge on time. The result is a
ratcheting of inductor current until either the output volt-
age is satisfied, or the converter reaches its programmed
current limit. At time
t7, the gate drive voltage has
dropped below its threshold but the converter continues
to service the output because it has highest priority, un-
less VGD drops below 7.5V.
Between
t7 and t8, the converter reaches its peak current
limit which is determined by RPL and VIN. Once the limit
is reached, the converter operates in continuous mode
with approximately 200mA of ripple current. At time
t8,
the output voltage is satisfied, and the converter can ser-
vice VGD, which occurs at
t9.


Similar Part No. - UCC2943-ADJ

ManufacturerPart #DatasheetDescription
logo
Texas Instruments
UCC2941 TI-UCC2941 Datasheet
143Kb / 8P
[Old version datasheet]   Low Power Synchronous Boost Converter
logo
List of Unclassifed Man...
UCC2941-3 ETC1-UCC2941-3 Datasheet
188Kb / 11P
   1V Synchronous Boost Converter
logo
Texas Instruments
UCC2941-3 TI1-UCC2941-3 Datasheet
296Kb / 20P
[Old version datasheet]   1V SYNCHRONOUS BOOST CONVERTER
UCC2941-3 TI1-UCC2941-3_11 Datasheet
296Kb / 20P
[Old version datasheet]   1V SYNCHRONOUS BOOST CONVERTER
logo
List of Unclassifed Man...
UCC2941-5 ETC1-UCC2941-5 Datasheet
188Kb / 11P
   1V Synchronous Boost Converter
More results

Similar Description - UCC2943-ADJ

ManufacturerPart #DatasheetDescription
logo
List of Unclassifed Man...
UCC2941-3 ETC1-UCC2941-3 Datasheet
188Kb / 11P
   1V Synchronous Boost Converter
logo
Texas Instruments
UCC2941-3 TI1-UCC2941-3_11 Datasheet
296Kb / 20P
[Old version datasheet]   1V SYNCHRONOUS BOOST CONVERTER
LM3561 TI1-LM3561_13 Datasheet
3Mb / 37P
[Old version datasheet]   Synchronous Boost Converter
LM3554 TI1-LM3554_16 Datasheet
4Mb / 47P
[Old version datasheet]   Synchronous Boost Converter
LM3555 TI1-LM3555 Datasheet
1Mb / 38P
[Old version datasheet]   Synchronous Boost Converter
logo
Analog Microelectronics
AME5177 AME-AME5177 Datasheet
485Kb / 14P
   Synchronous Boost Converter
AME5176 AME-AME5176 Datasheet
481Kb / 15P
   Synchronous Boost Converter
logo
Shenzhen Huazhimei Semi...
HM5178 HMSEMI-HM5178 Datasheet
631Kb / 9P
   SYNCHRONOUS BOOST CONVERTER
logo
Diodes Incorporated
AP6714 DIODES-AP6714_V01 Datasheet
249Kb / 11P
   1.8MHz SYNCHRONOUS BOOST CONVERTER
Rev. 5 - 2 April 2011
AP6714 DIODES-AP6714 Datasheet
267Kb / 15P
   1.8MHz SYNCHRONOUS BOOST CONVERTER
AP6714 Rev. 4
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11


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