參數(shù)資料
型號(hào)： NCP1282
廠商： ON SEMICONDUCTOR
英文描述： High Performance Active Clamp/Reset PWM Controller Featuring 500 V Startup
中文描述： 高性能有源鉗位/復(fù)位PWM控制器具有500伏特啟動(dòng)
文件頁(yè)數(shù)： 1/23頁(yè)
文件大?。?/td> 287K
代理商： NCP1282
Semiconductor Components Industries, LLC, 2006
December, 2006
Rev. 0
1
Publication Order Number:
NCP1282/D
NCP1282
High Performance Active
Clamp/Reset PWM Controller
Featuring 500 V Startup
The NCP1282 is a voltage mode controller designed for ac
dc or
dc
dc converters requiring high
efficiency and low parts count. This
controller incorporates two in phase outputs with an overlap delay to
prevent simultaneous conduction and facilitates soft switching. The
main output is designed for driving a forward converter primary
MOSFET. The secondary output is designed for driving an active
clamp circuit MOSFET, a synchronous rectifier on the secondary
side, or an asymmetric half bridge circuit.
The NCP1282 reduces component count and system size by
incorporating high accuracy on critical specifications such as
maximum duty cycle limit, undervoltage detector and overcurrent
threshold. Two distinctive features of the NCP1282 are soft
stop and
a cycle skip current limit with a time threshold. Soft
stop circuitry
powers down the converter in a controlled manner if a severe fault is
detected. The cycle skip detector enables a soft
stop sequence if a
continuous overcurrent condition is present.
Additional features found in the NCP1282 include line feed
forward, frequency synchronization up to 1.0 MHz, cycle
by
cycle
current limit with leading edge blanking (LEB), independent under
and overvoltage detectors, adjustable output overlap delay,
programmable maximum duty cycle, internal startup circuit and
soft
start.
Features
Dual Control Outputs with Adjustable Overlap Delay
>2.0 A Output Drive Capability
Soft
Stop Powers Down Converter in a Controlled
Manner
Cycle
by
Cycle Current Limit
Cycle Skip Initiated if Continuous Current Limit
Condition Exists
Voltage Mode Operation with Input Voltage
Feedforward
Fixed Frequency Operation up to 1.0 MHz
Bidirectional Frequency Synchronization
Independent Line Undervoltage and Overvoltage
Detectors
Minimum Operating Voltage of 8.5 V Ensures Enough
Voltage is Available for Driving High Voltage MOSFETs
Accurate Programmable Maximum Duty Cycle Limit
Programmable Maximum Volt
Second Product
Programmable Soft
Start
Internal 500 V Startup Circuit
Precision 5.0 V Reference
This is a Pb
Free Device*
Typical Applications
High Power Consumer Electronics
High Power AC
DC Converters
High Power DC
DC Converters
ATX Power Supplies
*For additional information on our Pb
Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques Reference
Manual, SOLDERRM/D.
A
WL, L
Y
WW, W = Work Week
G
= Pb
Free Package
= Assembly Location
= Wafer Lot
= Year
MARKING
DIAGRAM
http://onsemi.com
SO
16
D SUFFIX
CASE 751B
NCP1282BG
AWLYWW
Device
Package
Shipping
ORDERING INFORMATION
NCP1282BDR2G
SO
16
(Pb
Free)
2500 / Tape & Reel
For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
NCP1282BDR2G 功能描述:電壓模式 PWM 控制器 HI PRF RSET PWM CNTR RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開(kāi)關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel
NCP1288 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Fixed Frequency Current Mode Controller for Flyback Converters
NCP1288_11 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Fixed Frequency Current Mode Controller for Flyback Converters
NCP1288BD65R2G 功能描述:功率因數(shù)校正 IC NODSS AUTOR SOCP 65KHZ RoHS:否 制造商:Fairchild Semiconductor 開(kāi)關(guān)頻率:300 KHz 最大功率耗散: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel
NCP1294 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Enhanced Voltage Mode PWM Controller
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