[初哥請(qǐng)教]輸入DC30-72V,輸出DC12V,應(yīng)如何選器件?
我是做電源的初哥,請(qǐng)教各位有經(jīng)驗(yàn)的大俠,輸入DC30-72V,輸出DC12V30A,效率75%以上,其余指標(biāo)要求一般,有什么樣的開關(guān)管、續(xù)流二極管、控制芯片推薦?當(dāng)然越便宜越好!另外開關(guān)頻率應(yīng)選多少kHz為宜?謝謝!
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用MC34063
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@dyfan
用MC34063[圖片]500){this.resized=true;this.width=500;this.alt='這是一張縮略圖，點(diǎn)擊可放大。\n按住CTRL，滾動(dòng)鼠標(biāo)滾輪可自由縮放';this.style.cursor='hand'}"onclick="if(!this.resized){returntrue;}else{window.open('http://u.dianyuan.com/bbs/u/20/1092424713.gif');}"onmousewheel="returnimgzoom(this);">
請(qǐng)問(wèn)大功率管有什么好的推薦嗎?謝謝!
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