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onsemi FAN6248同步整流器控制器

安森美半导体 FAN6248同步整流器 (SR) 控制器优化用于LLC谐振转换器。这些控制器设有两个驱动级，可驱动对次级变压器绕组输出进行整流的SR MOSFET。FAN6248控制器有FAN6248HAMX和FAN6248HBMX型号可选。FAN6248HAMX 和 FAN6248HBMX控制器分别具有 高关断阈值电压和低关断阈值电压。其他特性包括轻负载检测、待机电流消耗以及SR电流反向检测。应用包括高功率密度笔记本电脑适配器、LCD-TV、PDP-TV、RP-TV电源以及大功率LED照明。

特性

  • Highly integrated self-contained control of synchronous rectifier with minimum external components
  • Anti-shoot-through control for reliable SR operation
  • Separate 100V rated sense inputs for sensing the drain and source voltage of each SR MOSFET
  • Adaptive parasitic inductance compensation to minimize the body diode conduction
  • Adaptive minimum on time for noise immunity
  • High driver output voltage of 10.5V to drive all MOSFET brands to the lowest RDS_ON

规范

  • Up to 30V operating voltage range
  • 25KHz to 700KHz operating frequency

应用

  • High power density laptop adapter
  • High power density adapter
  • Large screen LCD-TV, PDP-TV, and RP-TV power
  • High-efficiency desktop and server power supplies
  • Networking and telecom power supplies
  • High power LED lighting

Block Diagram

框图 - onsemi FAN6248同步整流器控制器
发布日期: 2017-06-19 | 更新日期: 2022-03-11