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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)
»材料組成を表示
»No Product Change Notifications exist
Product Overview
製品説明
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.
特長   利点
     
  • 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
アプリケーション   最終製品
  • High Power Density AC/DC Power Supplies
 
  • Notebook Adapters
  • Server Power Supplies
  • ATX & All-in-one Power Supplies
  • High Density USB Adapters
技術資料 & デザイン・リソース
デザイン・ノート (2) パッケージ図 (3)
データシート (1) 評価ボード文書 (9)
評価/開発ツール情報
製品 状態 Compliance 簡単な説明 アクション
NCP4305FLY40GEVB Intro Pending
Pb-free
A high efficiency synchronous rectification evaluation board
NCP4305LLCGEVB Intro Pending
Pb-free
A high efficiency synchronous rectification evaluation board
供給状況 & サンプル
製品
状態
Compliance
内容
外形
MSL*
梱包形態
予算 価格/Unit
タイプ
Case Outline
タイプ
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
面実装デバイスためのモイスチャー・レベル(260°Cリフローでの鉛フリー測定、235°Cリフローでの鉛フリー以外測定)
マーケットリードタイム(週) : Contact Factory
マーケットリードタイム(週) : Contact Factory
マーケットリードタイム(週) : Contact Factory
マーケットリードタイム(週) : Contact Factory
マーケットリードタイム(週) : Contact Factory
マーケットリードタイム(週) : Contact Factory
Datasheet: Secondary Side Synchronous Rectifiation Driver for High Efficiency SMPS Topologies
Rev. 1 (696kB)
»材料組成を表示
»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 
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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