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Analog Devices / Maxim Integrated MAX25255同步降壓轉(zhuǎn)換器數(shù)據(jù)手冊

科技觀察員 ? 2025-06-17 10:49 ? 次閱讀
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Analog Devices MAX25255同步降壓轉(zhuǎn)換器是雙路降壓轉(zhuǎn)換器,集成了高側(cè)和低側(cè)開關(guān)。這些IC在3V至36V的輸入電壓范圍內(nèi)提供每通道高達(dá)8A的電流。這些器件在無負(fù)載時(shí)僅使用12μA的靜態(tài)電流。通過觀察PGOOD 信號監(jiān)控電壓質(zhì)量。Analog Devices MAX25255通過以99%的占空比運(yùn)行來調(diào)節(jié)壓差區(qū)域的輸出電壓。

數(shù)據(jù)手冊:*附件:Analog Devices , Maxim Integrated MAX25255同步降壓轉(zhuǎn)換器數(shù)據(jù)手冊.pdf

特性

  • 雙路降壓轉(zhuǎn)換器
    • 寬輸入電壓范圍:3.0V至36V(42V,最大值)
    • 低關(guān)斷電源電流(6.5μA,最大值)
    • 低運(yùn)行靜態(tài)電流,一個(gè)通道開(12μA,典型值)
    • 編程VOUT :0.8 V至14 V
    • 每通道高達(dá)8A
    • 兩個(gè)轉(zhuǎn)換器之間180°異相工作
    • 最短導(dǎo)通時(shí)間:24ns(典型值)
  • 雙/四相操作
    • 能夠并聯(lián)操作兩個(gè)IC,實(shí)現(xiàn)四相操作
    • ±10%電流共享精度
    • 在雙相時(shí)支持高達(dá)16A電流,在四相時(shí)支持32A電流
  • 診斷與冗余電路 (MAX25255)
    • 符合ASIL B要求
    • 冗余參考
    • 裸片溫度監(jiān)控器
    • 精密欠壓和過壓保護(hù)
  • 綜述
    • 23引腳、4.50 mm x 5.75 mm FC2QFN封裝
    • 環(huán)境工作溫度范圍:-40°C至+125°C
    • 符合AEC-Q100標(biāo)準(zhǔn)
    • 開關(guān)頻率選項(xiàng):200kHz、400kHz、1MHz或2MHz
    • 擴(kuò)頻

應(yīng)用

  • 前端電源,用于音響主機(jī)
  • ASIL
  • 通用雙降壓轉(zhuǎn)換器
  • 遠(yuǎn)程信息處理模塊
  • 前置攝像頭電源

簡化框圖

1.png

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