Electronic Components Datasheet Search
  English  ▼

Delete All
ON OFF
ALLDATASHEET.NET

X  

Preview PDF Download HTML

NCP1654BD133R2G Datasheet(PDF) 18 Page - ON Semiconductor

Part No. NCP1654BD133R2G
Description  Power Factor Controller for Compact and Robust, Continuous Conduction Mode Pre-Converters
Download  23 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

NCP1654BD133R2G Datasheet(HTML) 18 Page - ON Semiconductor

Back Button NCP1654BD133R2G Datasheet HTML 14Page - ON Semiconductor NCP1654BD133R2G Datasheet HTML 15Page - ON Semiconductor NCP1654BD133R2G Datasheet HTML 16Page - ON Semiconductor NCP1654BD133R2G Datasheet HTML 17Page - ON Semiconductor NCP1654BD133R2G Datasheet HTML 18Page - ON Semiconductor NCP1654BD133R2G Datasheet HTML 19Page - ON Semiconductor NCP1654BD133R2G Datasheet HTML 20Page - ON Semiconductor NCP1654BD133R2G Datasheet HTML 21Page - ON Semiconductor NCP1654BD133R2G Datasheet HTML 22Page - ON Semiconductor Next Button
Zoom Inzoom in Zoom Outzoom out
 18 / 23 page
background image
NCP1654
http://onsemi.com
18
Soft Start
The block diagram and timing diagram of soft start
function are as shown in Figure 42 and Figure 43. The
device provides no output (or no duty ratio) when the
Vcontrol is lower than VCONTROL(min). Vcontrol is pulled low
when:
Brown−out, or
Undervoltage Protection
When the IC recovers from one of the following
conditions;
Undervoltage Lockout, Brown−out or
Undervoltage Protection, the 200
mA current source block
keeps off. Hence only the Operating Trans−conductance
Amplifier (OTA) raises the Vcontrol. And Vcontrol rises
slowly. This is to obtain a slow increasing duty cycle and
hence reduce the voltage and current stress on the
MOSFET. A soft−start operation is obtained.
Figure 42. Soft Start Block Diagram
+
-
+
-
95%
VREF
VREF
OTA
Vfb
6
5
Vcontrol
Vout Low Detect
200 mA
Vdd
±20 mA
Q
Q
S
R
Bias
Vdd
Off
UVP
UVLO
BO
UVLO
BO
95% VREF
Figure 43. Soft Start Timing Diagram
Period I
Period II
UVLO, BO, or UVP
Vdd
Vdd Rising
Vfb
Set
Reset
Q
Vout Low Detect


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 


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