công cụ tìm kiếm bảng dữ liệu linh kiện điện tử
  Vietnamese  ▼
ALLDATASHEET.VN

X  

MC34262PG bảng dữ liệu(PDF) 6 Page - ON Semiconductor

tên linh kiện MC34262PG
Giải thích chi tiết về linh kiện  Power Factor Controllers
Download  19 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
nhà sản xuất  ONSEMI [ON Semiconductor]
Trang chủ  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

MC34262PG bảng dữ liệu(HTML) 6 Page - ON Semiconductor

Back Button MC34262PG Datasheet HTML 2Page - ON Semiconductor MC34262PG Datasheet HTML 3Page - ON Semiconductor MC34262PG Datasheet HTML 4Page - ON Semiconductor MC34262PG Datasheet HTML 5Page - ON Semiconductor MC34262PG Datasheet HTML 6Page - ON Semiconductor MC34262PG Datasheet HTML 7Page - ON Semiconductor MC34262PG Datasheet HTML 8Page - ON Semiconductor MC34262PG Datasheet HTML 9Page - ON Semiconductor MC34262PG Datasheet HTML 10Page - ON Semiconductor Next Button
Zoom Inzoom in Zoom Outzoom out
 6 / 19 page
background image
MC34262, MC33262
http://onsemi.com
6
0
1020
3040
VCC, SUPPLY VOLTAGE (V)
VFB = 0 V
Current Sense = 0 V
Multiplier = 0 V
CL = 1.0 nF
f = 50 kHz
TA = 25°C
−55
−25
0
25
50
75
100
125
TA, AMBIENT TEMPERATURE (°C)
Figure 14. Supply Current
versus Supply Voltage
Figure 15. Undervoltage Lockout Thresholds
versus Temperature
Startup Threshold
(VCC Increasing)
16
12
8.0
4.0
0
14
13
12
11
9.0
7.0
8.0
10
Minimum Operating Threshold
(VCC Decreasing)
FUNCTIONAL DESCRIPTION
Introduction
With the goal of exceeding the requirements of
legislation on line−current harmonic content, there is an
ever increasing demand for an economical method of
obtaining a unity power factor. This data sheet describes a
monolithic control IC that was specifically designed for
power factor control with minimal external components. It
offers the designer a simple, cost−effective solution to
obtain the benefits of active power factor correction.
Most electronic ballasts and switching power supplies
use a bridge rectifier and a bulk storage capacitor to derive
raw dc voltage from the utility ac line, Figure 15.
Figure 16. Uncorrected Power Factor Circuit
AC
Line
Rectifiers
Converter
Bulk
Storage
Capacitor
+
Load
This simple rectifying circuit draws power from the line
when the instantaneous ac voltage exceeds the capacitor
voltage. This occurs near the line voltage peak and results
in a high charge current spike, Figure 16. Since power is
only taken near the line voltage peaks, the resulting spikes
of current are extremely nonsinusoidal with a high content
of harmonics. This results in a poor power factor condition
where the apparent input power is much higher than the real
power. Power factor ratios of 0.5 to 0.7 are common.
Power factor correction can be achieved with the use of
either a passive or an active input circuit. Passive circuits
usually contain a combination of large capacitors,
inductors, and rectifiers that operate at the ac line
frequency. Active circuits incorporate some form of a high
frequency switching converter for the power processing,
with the boost converter being the most popular topology,
Figure 17. Since active input circuits operate at a frequency
much higher than that of the ac line, they are smaller,
lighter in weight, and more efficient than a passive circuit
that yields similar results. With proper control of the
preconverter, almost any complex load can be made to
appear resistive to the ac line, thus significantly reducing
the harmonic current content.
Figure 17. Uncorrected Power Factor
Input Waveforms
Vpk
Rectified
0
AC Line
Voltage
0
AC Line
Current
Line Sag
DC
The MC34262, MC33262 are high performance, critical
conduction,
current−mode
power
factor
controllers
specifically
designed
for
use
in
off−line
active
preconverters.
These devices provide the necessary
features required to significantly enhance poor power
factor loads by keeping the ac line current sinusoidal and
in phase with the line voltage.


Số phần tương tự - MC34262PG

nhà sản xuấttên linh kiệnbảng dữ liệuGiải thích chi tiết về linh kiện
logo
ON Semiconductor
MC34262PG ONSEMI-MC34262PG Datasheet
399Kb / 19P
   Power Factor Controllers
August, 2013 ??Rev. 14
More results

Mô tả tương tự - MC34262PG

nhà sản xuấttên linh kiệnbảng dữ liệuGiải thích chi tiết về linh kiện
logo
ON Semiconductor
MC34261 ONSEMI-MC34261 Datasheet
500Kb / 13P
   Power Factor Controllers
July, 2006 ??Rev. 3
logo
IK Semicon Co., Ltd
IL34262 IKSEMICON-IL34262_11 Datasheet
549Kb / 9P
   Power Factor Controllers
logo
ON Semiconductor
MC34262 ONSEMI-MC34262_13 Datasheet
399Kb / 19P
   Power Factor Controllers
August, 2013 ??Rev. 14
MC34262 ONSEMI-MC34262 Datasheet
393Kb / 16P
   POWER FACTOR CONTROLLERS
1996 REV 1
logo
IK Semicon Co., Ltd
IL34262 IKSEMICON-IL34262 Datasheet
696Kb / 9P
   Power Factor Controllers
logo
List of Unclassifed Man...
IL34262 ETC-IL34262 Datasheet
316Kb / 12P
   Power Factor Controllers
logo
Guangdong Kexin Industr...
MC34262 KEXIN-MC34262 Datasheet
676Kb / 8P
   Power Factor Controllers
logo
Unisonic Technologies
MC34262 UTC-MC34262 Datasheet
206Kb / 6P
   POWER FACTOR CONTROLLERS
logo
ON Semiconductor
MC34262 ONSEMI-MC34262_11 Datasheet
401Kb / 19P
   Power Factor Controllers
September, 2011 ??Rev. 13
logo
Motorola, Inc
MC34261 MOTOROLA-MC34261 Datasheet
309Kb / 12P
   POWER FACTOR CONTROLLERS
More results


Html Pages

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


bảng dữ liệu tải về

Go To PDF Page


Link URL




Chính sách bảo mật
ALLDATASHEET.VN
Cho đến nay ALLDATASHEET có giúp ích cho doanh nghiệp của bạn hay không?  [ DONATE ] 

Alldatasheet là   |   Quảng cáo   |   Liên lạc với chúng tôi   |   Chính sách bảo mật   |   Trao đổi link   |   Tìm kiếm theo nhà sản xuất
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