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NCP4303A

更新时间： 2024-11-08 05:52:03
品牌 Logo 应用领域
安森美 - ONSEMI 驱动器开关
页数 文件大小 规格书
26页 950K
描述
Secondary Side Synchronous Rectification Driver for High Efficiency SMPS Topologies

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NCP4303A 数据手册

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NCP4303A/B  
Secondary Side  
Synchronous Rectification  
Driver for High Efficiency  
SMPS Topologies  
http://onsemi.com  
The NCP4303A/B is a full featured controller and driver tailored to  
control synchronous rectification circuitry in switch mode power  
supplies. Thanks to its versatility, it can be used in various topologies  
such as flyback, forward and Half Bridge Resonant LLC.  
The combination of externally adjustable minimum on and off times  
helps to fight the ringing induced by the PCB layout and other  
parasitic elements. Therefore, a reliable and noise less operation of the  
SR system is insured.  
The extremely low turn off delay time, high sink current capability  
of the driver and automatic package parasitic inductance  
compensation system allow to maximize synchronous rectification  
MOSFET conduction time that enables further increase of SMPS  
efficiency.  
MARKING  
DIAGRAM  
8
8
XXXXX  
ALYWX  
G
1
SOIC−8  
D SUFFIX  
CASE 751  
1
xx  
A
= Specific Device Code  
= Assembly Location  
WL, L = Wafer Lot  
= Year  
WW, W = Work Week  
YY, Y  
Finally, a wide operating V range combined with two versions of  
CC  
driver voltage clamp eases implementation of the SR system in 24 V  
output applications.  
G or G = Pb−Free Package  
Features  
PINOUT INFORMATION  
• Self−Contained Control of Synchronous Rectifier in CCM, DCM,  
and QR Flyback Applications  
• Precise True Secondary Zero Current Detection with Adjustable  
Threshold  
DRV  
V
1
2
3
4
8
7
6
5
CC  
Min_Toff  
Min_Ton  
Trig/Disable  
GND  
COMP  
CS  
• Automatic Parasitic Inductance Compensation Input  
• Typically 40 ns Turn off Delay from Current Sense Input to Driver  
• Zero Current Detection Pin Capability up to 200 V  
ORDERING INFORMATION  
†
Device  
Package  
Shipping  
• Ultrafast Trigger Interface to External Signal for CCM operation  
• Disable Input to Enter Standby or Low Consumption Mode  
NCP4303ADR2G  
SOIC−8  
2500 /  
(Pb−Free)  
Tape & Reel  
• Adjustable Minimum On Time Independent of V Level  
CC  
NCP4303BDR2G  
SOIC−8  
2500 /  
• Adjustable Minimum Off Time Independent of V Level  
CC  
(Pb−Free)  
Tape & Reel  
• 5 A / 2.5 A Peak Current Sink / Source Drive Capability  
• Operating Voltage Range up to 30 V  
†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.  
• Gate Drive Clamp of Either 12 V (NCP4303A) or 6 V (NCP4303B)  
• Low Startup and Standby Current Consumption  
• Maximum Frequency of Operation up to 500 kHz  
• SOIC−8 Package  
• These are Pb−Free Devices  
Typical Applications  
• Notebook Adapters  
• High Power Density AC/DC Power Supplies  
• Gaming Consoles  
• All SMPS with High Efficiency Requirements  
©
Semiconductor Components Industries, LLC, 2010  
1
Publication Order Number:  
April, 2010 − Rev. 1  
NCP4303/D  
1234567...26

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 		Secondary Side Synchronous Rectification Driver for High Efficiency SMPS Topologies
NCP4304ADR2G ONSEMI

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 		Secondary Side Synchronous Rectification Driver for High Efficiency SMPS Topologies
NCP4304AMNTWG ONSEMI

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 		Secondary Side Synchronous Rectification Driver for High Efficiency SMPS Topologies
NCP4304BDR2G ONSEMI

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 		Secondary Side Synchronous Rectification Driver for High Efficiency SMPS Topologies

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