参数资料
| 型号： | NCP1282BDR2G |
| 厂商： | ON Semiconductor |
| 文件页数： | 1/22页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BST FLYBK VM 16SOIC |
| 标准包装： | 1 |
| PWM 型： | 电压模式 |
| 输出数： | 2 |
| 频率 - 最大： | 1MHz |
| 占空比： | 85% |
| 电源电压： | 8.5 V ~ 20 V |
| 降压： | 无 |
| 升压： | 是 |
| 回扫： | 是 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 包装： | 剪切带 (CT) |
| 其它名称： | NCP1282BDR2GOSCT |
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
http://onsemi.com
MARKING
DIAGRAM
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
SO-- 16
D SUFFIX
CASE 751B
NCP1282BG
AWLYWW
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.
A
WL, L
Y
WW, W
G
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb--Free Package
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,
ORDERING INFORMATION
Device Package Shipping ?
programmable maximum duty cycle, internal startup circuit and
soft-- start.
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.
Features
? Dual Control Outputs with Adjustable Overlap Delay
? >2.0 A Output Drive Capability
? Soft-- Stop Powers Down Converter in a Controlled
Manner
? 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
? Cycle-- by-- Cycle Current Limit
?
Programmable Soft-- Start
? 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
? 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
? Semiconductor Components Industries, LLC, 2010
November, 2010 - Rev. 4
1
Publication Order Number:
NCP1282/D
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| NCP1288 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:Fixed Frequency Current Mode Controller for Flyback Converters |
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