5秒后页面跳转
捷配首页

Datasheet > NCP1937B3DR2G
NCP1937B3DR2G PDF预览

NCP1937B3DR2G

更新时间： 2024-11-08 00:54:23
品牌 Logo 应用领域
安森美 - ONSEMI /
页数 文件大小 规格书
38页 970K
描述
Combination Power Factor Correction and Quasi-Resonant Flyback Controllers for Adapters

阅读下载

中文翻译

获取价格

NCP1937B3DR2G 数据手册

 浏览型号NCP1937B3DR2G的Datasheet PDF文件第2页浏览型号NCP1937B3DR2G的Datasheet PDF文件第3页浏览型号NCP1937B3DR2G的Datasheet PDF文件第4页浏览型号NCP1937B3DR2G的Datasheet PDF文件第5页浏览型号NCP1937B3DR2G的Datasheet PDF文件第6页浏览型号NCP1937B3DR2G的Datasheet PDF文件第7页 
NCP1937  
Combination Power Factor  
Correction and Quasi-  
Resonant Flyback  
Controllers for Adapters  
www.onsemi.com  
MARKING DIAGRAM  
This combination IC integrates power factor correction (PFC) and  
quasi−resonant flyback functionality necessary to implement a  
compact and highly efficient Switched Mode Power Supply for an  
adapter application.  
The PFC stage exhibits near−unity power factor while operating in a  
Critical Conduction Mode (CrM) with a maximum frequency clamp.  
The circuit incorporates all the features necessary for building a robust  
and compact PFC stage while minimizing the number of external  
components.  
1
20  
HV/X2  
BO/X2  
PFBHV  
PFBLV  
GND  
PControl  
PONOFF  
QCT  
PCS/PZCD  
PDRV  
QDRV  
QCS  
SOIC−20  
Narrow Body  
CASE 751BS  
Fault  
PSTimer  
QFB  
VCC  
The quasi−resonant current−mode flyback stage features a  
proprietary valley−lockout circuitry, ensuring stable valley switching.  
QZCD  
th  
NCP1937 = Specific Device Code  
This system works down to the 4 valley and toggles to a frequency  
xx  
A
WL  
YY  
WW  
G
= A1, A2, A3, B1, B2, B3, C1, C4 or C61  
= Assembly Location  
= Wafer Lot  
= Year  
= Work Week  
th  
foldback mode with a minimum frequency clamp beyond the 4  
valley to eliminate audible noise. Skip mode operation allows  
excellent efficiency in light load conditions while consuming very low  
standby power consumption.  
= Pb−Free Package  
Common General Features  
• Wide V Range from 9 V to 30 V with Built−in Overvoltage  
CC  
Protection  
ORDERING INFORMATION  
See detailed ordering and shipping information on page 5 of  
this data sheet.  
• High−Voltage Startup Circuit and Active Input Filter Capacitor  
Discharge Circuitry for Reduced Standby Power  
• Integrated High−Voltage Brown−Out Detector  
• Integrated High−Voltage Switch Disconnects PFC Feedback Resistor  
Divider to Reduce Standby Power  
• Fault Input for Severe Fault Conditions, NTC  
Compatible (Latch and Auto−Recovery Options)  
• 0.5 A / 0.8 A Source / Sink Gate Drivers  
• Feed−Forward for Improved Operation across Line and  
Load  
• Adjustable PFC Disable Threshold Based on Output  
Power  
• Internal Temperature Shutdown  
• Power Savings Mode Reduces Supply Current  
Consumption to 70 mA Enabling Very Low Input Power  
Applications  
QR Flyback Controller Features  
• Valley Switching Operation with Valley−Lockout for  
Noise−Free Operation  
• Frequency Foldback with Minimum Frequency Clamp  
for Highest Performance in Standby Mode  
• Minimum Frequency Clamp Eliminates Audible Noise  
PFC Controller Features  
• Critical Conduction Mode with Constant On Time  
Control (Voltage Mode) and Maximum Frequency  
Clamp  
• Timer−Based Overload Protection (Latched or  
• Accurate Overvoltage Protection  
Auto−Recovery options)  
• Adjustable Overpower Protection  
• Winding and Output Diode Short−Circuit Protection  
• 4 ms Soft−Start Timer  
• Bi−Level Line−Dependent Output Voltage  
• Fast Line / Load Transient Compensation  
• Boost Diode Short−Circuit Protection  
© Semiconductor Components Industries, LLC, 2015  
1
Publication Order Number:  
June, 2015 − Rev. 4  
NCP1937/D  
1234567...38

中文翻译

下载PDF

与NCP1937B3DR2G相关器件

型号 品牌 获取价格 描述 数据表
NCP1937C1DR2G ONSEMI

获取价格

 		Combination Power Factor Correction and Quasi-Resonant Flyback Controllers for Adapters
NCP1937C4DR2G ONSEMI

获取价格

 		Combination Power Factor Correction and Quasi-Resonant Flyback Controllers for Adapters
NCP1937C61DR2G ONSEMI

获取价格

 		Combination Power Factor Correction and Quasi-Resonant Flyback Controllers for Adapters
NCP21WB333 MURATA

获取价格

 		for Surface Mounting Application
NCP21WB333J03RA MURATA

获取价格

 		NTC Thermistors
NCP21WB333J03RA_17 MURATA

获取价格

 		NTC Thermistors
NCP21WB333KP3RA MURATA

获取价格

 		RESISTOR, TEMPERATURE DEPENDENT, NTC, 33000ohm, SURFACE MOUNT, CHIP
NCP21WB473 MURATA

获取价格

 		for Surface Mounting Application
NCP21WB473J03RA MURATA

获取价格

 		NTC Thermistors
NCP21WB473J03RA_17 MURATA

获取价格

 		NTC Thermistors

与NCP1937B3DR2G相关文章

您还可以找


热门产品
PCB打样/小批量
铝基板
BOM智能配单
PCBA制造
钣金
精密CNC
模具注塑
薄膜开关
精选活动
PCBA打样特惠
四六层板品质升级
铝基板品质升级
一体化电子制造
DFM下载
服务支持
企业认证
产品展示
工厂展示
工艺能力
积分商城
关于捷配
捷配简介
企业文化
公司动态
人才招聘
联系我们
帮助中心
下单流程
付款流程
开票流程
常见问题
全球PCB制造服务专线 400-613-0088

工作时间：9:00-21:00

CEO邮箱：ceo@jiepei.com

投诉邮箱：tousu@jiepei.com

捷配网-微信公众号 微信公众号
捷配网-微信公众号 抖音公众号
资质认证：
合作快递：
支付方式：
Copyright © 2024 Jiepei.com Inc. All Rights Reserved. 版权所有:杭州捷配信息科技有限公司 浙公网安备 33010502006866号 浙ICP备10014259号-119 营业执照ICP证