- HR1000
HR1000
NOT RECOMMENDED FOR NEW DESIGNS
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详情
HR1000是一款专用于谐振半桥拓扑的控制器。它提供两个驱动信号通道,以50%的占空比输出互补信号。两个互补栅极信号之间的内部固定死区时间为350ns,可确保瞬态期间的零电压切换,并实现高频操作。
其集成自举二极管简化了上管开关的外部驱动电路。它可以承受高达600V的电压,并具有较高的dV / dt噪声抗扰性。
调制开关频率可调节拓扑输出电压。HR1000通过一个可调振荡器设置最大和最小开关频率。
该器件以设定的最大开关频率启动,并逐渐降低速率,直到控制环路接管,以防止过多的浪涌电流。
在轻载条件下,HR1000可被强制进入受控突发模式,以最大程度降低功耗并加强输出调节。
其保护功能包括闭锁关断、自动恢复、掉电保护和过温保护,在不增加额外电路复杂性的情况下,提高了变换器设计安全性。
HR1000为上下管栅极驱动器提供1.5A / 2A的拉/灌电流。
它采用SOIC-16封装。
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产品特性和优势
- 谐振半桥转换器的50%占空比,变频控制
- 350ns固定死区时间
- 具有集成自举二极管和高dV / dt抗扰度的600V高侧栅极驱动器
- 高端和低端栅极驱动器均具有1.5A / 2A的源/灌能力
- 高精度振荡器
- 以高达600kHz的频率运行
- 可调最大和最小开关频率
- 两级过流保护:具有可编程持续时间的移频和锁存关断
- 通过BO引脚进行远程ON / OFF控制和欠压保护
- 锁存禁用输入,易于实施保护
- 内部热关断
- 与PFC控制器的接口
- 轻载时的可编程突发模式操作
- 非线性软启动,可实现单调输出电压上升
- SO-16封装
正在供货产品型号
HR1000HSLF HR1000HS-LF HR1000HS-LF-P HR1000HS-LF-Z
以 P 和 Z 结尾的零件编号是相同的零件。P 和 Z 仅表示卷筒尺寸
P&Z的含义
HR1000 Resources
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