不知大家对BOOST变换器的启动问题有什么高见?
BOOST变换器刚启动,输出电压还没有建立,此时如何抑制冲击电流?
好象对于电流源型的变换器都有启动冲击电流很大的问题,通常是把储能感设计成反激型式.
不知哪位高手能解释一下工作原理!小弟在此先谢了!
不知大家对BOOST变换器的启动问题有什么高见?
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給大家傳一個DELL服務器電源的電路圖,並請注意D102、Q001、RT1的應用
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@zero_lee
給大家傳一個DELL服務器電源的電路圖,並請注意D102、Q001、RT1的應用[图片]500){this.resized=true;this.width=500;this.alt='这是一张缩略图,点击可放大。\n按住CTRL,滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}"onclick="if(!this.resized){returntrue;}else{window.open('http://u.dianyuan.com/bbs/u/0/1074499223.jpg');}"onmousewheel="returnimgzoom(this);">
D102是为了防止L101在开机瞬间饱和的.
RT1和Q001也很常见.
RT1和Q001也很常见.
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@szrg
我也为此问题困惑我也为此问题困惑呀
Boost turning-on process
D102 is to pre-charge the boost output cap before boost circuti turning-on.
RT1 is to limit the inrush current.
Q001 is turned-on after boost circuit starts to work and it will short RT1 so that there is less power loss because Q001 is a SCR.
D102 is to pre-charge the boost output cap before boost circuti turning-on.
RT1 is to limit the inrush current.
Q001 is turned-on after boost circuit starts to work and it will short RT1 so that there is less power loss because Q001 is a SCR.
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