数据搜索系统,热门电子元器件搜索
  Chinese  ▼
ALLDATASHEETCN.COM

X  

ML4802 数据表(PDF) 1 Page - Fairchild Semiconductor

部件名 ML4802
功能描述  PFC/PWM Controller Combo with Green Mode
Download  15 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  FAIRCHILD [Fairchild Semiconductor]
网页  http://www.fairchildsemi.com
标志 FAIRCHILD - Fairchild Semiconductor

ML4802 数据表(HTML) 1 Page - Fairchild Semiconductor

  ML4802 Datasheet HTML 1Page - Fairchild Semiconductor ML4802 Datasheet HTML 2Page - Fairchild Semiconductor ML4802 Datasheet HTML 3Page - Fairchild Semiconductor ML4802 Datasheet HTML 4Page - Fairchild Semiconductor ML4802 Datasheet HTML 5Page - Fairchild Semiconductor ML4802 Datasheet HTML 6Page - Fairchild Semiconductor ML4802 Datasheet HTML 7Page - Fairchild Semiconductor ML4802 Datasheet HTML 8Page - Fairchild Semiconductor ML4802 Datasheet HTML 9Page - Fairchild Semiconductor Next Button
Zoom Inzoom in Zoom Outzoom out
 1 / 15 page
background image
December 2000
PRELIMINARY
ML4802
PFC/PWM Controller Combo with Green Mode
BLOCK DIAGRAM
GENERAL DESCRIPTION
The ML 4802 is a controller for power factor corrected,
switched mode power supplies that offers Green Mode
operation and reduced start-up and operating currents.
Green Mode is an efficiency improving circuit feature
which operates automatically in low power situations.
This feature helps meet the demands of Energy Star™
programs.
Power Factor Correction (PFC) offers the use of lower cost
bulk capacitors, reduces power line loading and stress on
the switching FETs. The ML4802 includes circuits for the
implementation of a leading edge, average current,
“boost” type power factor corrector and a trailing edge
Pulse Width Modulator (PWM).
The PFC frequency of the ML4802 is automatically
synchronized to be one half that of the PWM. This
technique allows the user to design with smaller PWM
components while maintaining the optimum operating
frequency for the PFC. An over-voltage comparator shuts
down the PFC section in the event of a sudden decrease
in load. The PFC section also includes peak current
limiting and brown-out protection.
FEATURES
s
Internally synchronized PFC and PWM in one IC
s
Green Mode maximizes efficiency during low power
standby operation
s
Low supply current
(Start-up 200
µA typ., operating 5.5mA typ.)
s
Average current continuous boost leading edge PFC
s
High efficiency trailing edge PWM can be configured
for current mode operation
s
Reduced ripple current in the storage capacitor
between the PFC and PWM sections
s
PFC overvoltage comparator eliminates output
“runaway” due to load removal
s
Current fed gain modulator for improved noise
immunity
s
Overvoltage protection, UVLO, and soft start
VEAO
IEAO
OSCILLATOR
OVP
PFC ILIMIT
VREF
PULSE WIDTH MODULATOR
POWER FACTOR CORRECTOR
2.5V
+
-
-
+
7.5V
REFERENCE
VCC
VEA
+
IEA
+
-
PFC OUT
2.75V
-1V
PWM OUT
VCC
+
-
1.5V
-
+
2.43V
VFB
-
+
8V
8V
VIN OK
GAIN
MODULATOR
÷2
1.8k
1.8k
VLS
1.25V
25µA
-
+
DC ILIMIT
8V
PFC
OUTPUT
DRIVER
PFC
CONTROLLER
DC LIMIT
PWM
OUTPUT
DRIVER
VFB
VDC
GREEN
MODE
CONTROLLER
GREEN
MODE
16
1
13
14
12
11
15
VFB
2
IAC
4
VRMS
3
ISENSE
8
RAMP 1
7
RT/CT
9
RAMP 2
6
VDC
5
SS
REV. 1.0.1 12/12/2000


类似零件编号 - ML4802

制造商部件名数据表功能描述
logo
Micro Linear Corporatio...
ML4802 MICRO-LINEAR-ML4802 Datasheet
299Kb / 15P
   PFC/PWM Controller Combo with Green Mode
ML4802CP MICRO-LINEAR-ML4802CP Datasheet
299Kb / 15P
   PFC/PWM Controller Combo with Green Mode
ML4802CS MICRO-LINEAR-ML4802CS Datasheet
299Kb / 15P
   PFC/PWM Controller Combo with Green Mode
ML4802IP MICRO-LINEAR-ML4802IP Datasheet
299Kb / 15P
   PFC/PWM Controller Combo with Green Mode
ML4802IS MICRO-LINEAR-ML4802IS Datasheet
299Kb / 15P
   PFC/PWM Controller Combo with Green Mode
More results

类似说明 - ML4802

制造商部件名数据表功能描述
logo
Micro Linear Corporatio...
ML4802 MICRO-LINEAR-ML4802 Datasheet
299Kb / 15P
   PFC/PWM Controller Combo with Green Mode
logo
Champion Microelectroni...
CM6805BO CHAMP-CM6805BO Datasheet
255Kb / 15P
   10-PIN Green-Mode PFC/PWM Combo CONTROLLER
CM6805A CHAMP-CM6805A_10 Datasheet
203Kb / 15P
   10-PIN Green-Mode PFC/PWM Combo CONTROLLER
CM6805BO CHAMP-CM6805BO_10 Datasheet
203Kb / 15P
   10-PIN Green-Mode PFC/PWM Combo CONTROLLER
CM6805A CHAMP-CM6805A Datasheet
256Kb / 15P
   10-PIN Green-Mode PFC/PWM Combo CONTROLLER
logo
Fairchild Semiconductor
SG6902 FAIRCHILD-SG6902 Datasheet
856Kb / 22P
   Green-Mode PFC / Flyback-PWM Controller
logo
Champion Microelectroni...
CM6802 CHAMP-CM6802 Datasheet
338Kb / 18P
   NO BLEED RESISTOR GREEN MODE PFC/PWM CONTROLLER COMBO
logo
Fairchild Semiconductor
SG6932 FAIRCHILD-SG6932 Datasheet
696Kb / 20P
   Green-Mode PFC / Forward PWM Controller
SG6905 FAIRCHILD-SG6905 Datasheet
689Kb / 21P
   Green mode PFC/Flyback-PWM Controller
ML4805 FAIRCHILD-ML4805 Datasheet
125Kb / 13P
   Variable Feedforward PFC/PWM Controller Combo
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15


数据表 下载

Go To PDF Page


链接网址




隐私政策
ALLDATASHEETCN.COM
ALLDATASHEET是否为您带来帮助?  [ DONATE ] 

关于 Alldatasheet   |   广告服务   |   联系我们   |   隐私政策   |   链接交换   |   制造商名单
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