feedback
评价本网页


需要帮助?


NCP4305: Secondary Side Controller, Synchronous Rectification, for High Efficiency SMPS Topologies

Overview
Specifications
Datasheet: Secondary Side Synchronous Rectifiation Driver for High Efficiency SMPS Topologies
Rev. 1 (696kB)
»查看材料成分
»No Product Change Notifications exist
Product Overview
产品说明
The NCP4305 is high performance driver tailored to control a synchronous rectification MOSFET in switch mode power supplies. Thanks to its high performance drivers and versatility, it can be used in various topologies such as DCM or CCM flyback, quasi resonant flyback, forward and half bridge resonant LLC.
The combination of externally adjustable minimum off-time and on-time blanking periods helps to fight the ringing induced by the PCB layout and other parasitic elements. A reliable and noise less operation of the SR system is insured due to the Self Synchronization feature. The NCP4305 also utilizes Kelvin connection of the driver to the MOSFET to achieve high efficiency operation at full load and utilizes a light load detection architecture to achieve high efficiency at light load.
The precise turn−off threshold, extremely low turn−off delay time and high sink current capability of the driver allow the maximum synchronous rectification MOSFET conduction time and enables maximum SMPS efficiency. The high accuracy driver and 5 V gate clamp enables the use of GaN MOSFETs.
特性   优势
     
  • Precise True Secondary Zero Current Detection with Adjustable Threshold
 
  • Allows for proper timing of SR MOSFET turn on and turn off
  • Typically 20 ns Turn off Delay from Current Sense Input to Driver
 
  • Maximizes conduction time of the MOSFET to increase efficiency
  • Zero Current Detection Pin Capability up to 200 V
 
  • Allows direct connection of CS input to MOSFET drain in flyback applications
  • Optional Ultrafast (7ns) Trigger Input
 
  • Improves performance for applications working in deep CCM
  • Disable Input
 
  • Enters the IC into a low consumption standby mode
  • Adjustable Minimum ON Time and Minimum OFF Time
 
  • Prevents accidental MOSFET turn on or turn off due to ringing
  • Self Synchronization
 
  • Ensures proper DRV pulses during operation
  • 8 A Sink, 4 A Source Drive capability
 
  • Fast turn off of MOSFET for optimized conduction period
  • Light Load Detection with Modulated Gate Drive
 
  • Increased stability coming in and out of Light Load
  • 4.5 V & 9 V UVLO Options and 36 V(Max)
 
  • Wide output operating voltages
应用   终端产品
  • High Power Density AC/DC Power Supplies
 
  • Notebook Adapters
  • Server Power Supplies
  • ATX & All-in-one Power Supplies
  • High Density USB Adapters
技术文档及设计资源
设计注释 (2) 封装图纸 (3)
数据表 (1) 评估板文档 (9)
评估/开发工具信息
产品 状况 Compliance 简短说明 行动
NCP4305FLY40GEVB Intro Pending
Pb-free
A high efficiency synchronous rectification evaluation board
NCP4305LLCGEVB Intro Pending
Pb-free
A high efficiency synchronous rectification evaluation board
供货情况和样品
产品
状况
Compliance
具体说明
封装
MSL*
容器
预算价格 (1千个数量的单价)
类型
外形
类型
数量
NCP4305ADR2G Active 
Pb-free
Halide free
Secondary Side Controller, Synchronous Rectification, for High Efficiency SMPS Topologies SOIC-8 751-07 3 Tape and Reel 2500 $0.5867
NCP4305AMTTWG Product Preview
Pb-free
Halide free
Secondary Side Controller, Synchronous Rectification, for High Efficiency SMPS Topologies WDFN-8 511AT 1 Tape and Reel 3000 Contact Sales Office
NCP4305DDR2G Active 
Pb-free
Halide free
Secondary Side Controller, Synchronous Rectification, for High Efficiency SMPS Topologies SOIC-8 751-07 3 Tape and Reel 2500 $0.5867
NCP4305DMNTWG Product Preview
Pb-free
Halide free
Secondary Side Controller, Synchronous Rectification, for High Efficiency SMPS Topologies DFN-8 488AF 1 Tape and Reel 4000 Contact Sales Office
NCP4305DMTTWG Product Preview
Pb-free
Halide free
Secondary Side Controller, Synchronous Rectification, for High Efficiency SMPS Topologies WDFN-8 511AT 1 Tape and Reel 3000 Contact Sales Office
NCP4305QDR2G Active 
Pb-free
Halide free
Secondary Side Controller, Synchronous Rectification, for High Efficiency SMPS Topologies SOIC-8 751-07 3 Tape and Reel 2500 $0.5867
表面贴装器件的潮湿敏感度等级(MSL)(260°C回流温度时测量无铅,235°C回流温度时测量含铅)
市场订货至交货的时间(周) : Contact Factory
市场订货至交货的时间(周) : Contact Factory
市场订货至交货的时间(周) : Contact Factory
市场订货至交货的时间(周) : Contact Factory
市场订货至交货的时间(周) : Contact Factory
市场订货至交货的时间(周) : Contact Factory
Datasheet: Secondary Side Synchronous Rectifiation Driver for High Efficiency SMPS Topologies
Rev. 1 (696kB)
»查看材料成分
»No Product Change Notifications exist
Product Overview

Product Compliance Status Description VCC Max (V) Vref Typ (V) ICC Max (A) TA Min (°C) TA Max (°C) Package Type
 Pb-free 
 Halide free 
 Active     Secondary Side Controller, Synchronous Rectification, for High Efficiency SMPS Topologies   37     0.0056   -40   125   SOIC-8 
 Pb-free 
 Halide free 
 Product Preview     Secondary Side Controller, Synchronous Rectification, for High Efficiency SMPS Topologies   37     0.0056   -40   125   WDFN-8 
 Pb-free 
 Halide free 
 Active     Secondary Side Controller, Synchronous Rectification, for High Efficiency SMPS Topologies   37     0.006   -40   125   SOIC-8 
 Pb-free 
 Halide free 
 Product Preview     Secondary Side Controller, Synchronous Rectification, for High Efficiency SMPS Topologies   37     0.006   -40   125   DFN-8 
 Pb-free 
 Halide free 
 Product Preview     Secondary Side Controller, Synchronous Rectification, for High Efficiency SMPS Topologies   37     0.006   -40   125   WDFN-8 
 Pb-free 
 Halide free 
 Active     Secondary Side Controller, Synchronous Rectification, for High Efficiency SMPS Topologies   37     0.006   -40   125   SOIC-8 
之前浏览的产品
清除列表

新产品
 

NCP4305  Secondary Side Synchronous Rectification Driver for High Efficiency SMPS Topologies

  • Precise true secondary zero current detection with adjustable threshold
  • Self synchronization
  • Typical 20 ns turn off delay from current sense input to driver