器件名称 详细搜索
产品 LM5046TI
描述

LM5046 脉宽调制 (PWM) 控制器具有 利用电流模式或电压模式控制实现相移全桥拓扑电源转换器 所需的全部功能。该器件可由输入电压最高可达 100V 的隔离式 DC-DC 转换器初级侧供电运行。这款高度集成的控制器 - 驱动器可为四个外部桥式金属氧化物半导体场效应晶体管 (MOSFET) 提供 2A 双路高侧和低侧栅极驱动器,同时为次级侧同步整流 MOSFET 提供控制信号。外部电阻通过编程方式设定死区,以启用初级侧场效应晶体管 (FET) 的零电压转换。由于同步整流器能够以智能方式启动,因此支持电源转换器单调导通,即使在预偏置负载条件下也是如此。其他 功能 包括逐周期电流限制、断续模式重启、可编程软启动、同步整流软启动和具有同步和热关断功能的 2MHz 振荡器。

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