LMR33630BQRNXTQ1開關穩(wen)(wen)壓(ya)器(qi)。可以通過連續改(gai)變開關穩(wen)(wen)壓(ya)器(qi)時(shi)鐘的(de)(de)(de)頻(pin)(pin)率(lv)來改(gai)善EMI。這(zhe)種被稱為SSFM的(de)(de)(de)技(ji)術不允許發射(she)能(neng)(neng)(neng)量在(zai)(zai)任何接(jie)(jie)(jie)收(shou)器(qi)的(de)(de)(de)頻(pin)(pin)段中停留過長的(de)(de)(de)時(shi)間(jian)，從而改(gai)善了EMI。為了至大限度地發揮SSFM的(de)(de)(de)效用，主要有(you)(you)4個必需考慮的(de)(de)(de)因素(su)：受影響接(jie)(jie)(jie)收(shou)器(qi)的(de)(de)(de)帶(dai)寬、頻(pin)(pin)率(lv)調(diao)制(zhi)的(de)(de)(de)方法、頻(pin)(pin)率(lv)擴(kuo)展量和(he)調(diao)制(zhi)速率(lv)。在(zai)(zai)考慮EMI時(shi)，設(she)計師應對受EMI影響的(de)(de)(de)接(jie)(jie)(jie)收(shou)器(qi)帶(dai)寬有(you)(you)所了解。這(zhe)些接(jie)(jie)(jie)收(shou)器(qi)可能(neng)(neng)(neng)是實(shi)際的(de)(de)(de)系(xi)統設(she)備，也有(you)(you)可能(neng)(neng)(neng)是用于(yu)實(shi)現與CISPR16-1監(jian)管標準(zhun)之相符(fu)性的(de)(de)(de)接(jie)(jie)(jie)收(shou)器(qi)。接(jie)(jie)(jie)收(shou)器(qi)的(de)(de)(de)帶(dai)寬決定(ding)了兩個重要的(de)(de)(de)特性：接(jie)(jie)(jie)收(shou)器(qi)將(jiang)會(hui)做出響應的(de)(de)(de)頻(pin)(pin)率(lv)范圍以及在(zai)(zai)遭受EMI時(shi)接(jie)(jie)(jie)收(shou)器(qi)的(de)(de)(de)響應時(shi)間(jian)。保(bao)護功能(neng)(neng)(neng)包括(kuo)熱關機、輸入欠壓(ya)鎖定(ding)、逐(zhu)周期電(dian)流限制(zhi)和(he)打嗝(ge)短路保(bao)護。湖(hu)南出口(kou)LMR33630CQRNXRQ1價(jia)格優惠(hui)

從汽(qi)車信息智(zhi)能系統到制(zhi)造業中的(de)(de)裝配機器(qi)人，DC-DC 開(kai)(kai)關(guan)(guan)穩(wen)(wen)(wen)壓(ya)器(qi)是極(ji)其重要的(de)(de)。汽(qi)車應用中 DC-DC 開(kai)(kai)關(guan)(guan)穩(wen)(wen)(wen)壓(ya)器(qi)的(de)(de)要求包括可靠性、小型化、熱(re)(re)調(diao)節(jie)、電(dian)磁干擾 (EMI) 和開(kai)(kai)發支持。DC-DC 轉換器(qi)必須(xu)在電(dian)壓(ya)波動期間(jian)保持一致、穩(wen)(wen)(wen)定(ding)的(de)(de)運行。發熱(re)(re)會縮短(duan)開(kai)(kai)關(guan)(guan)穩(wen)(wen)(wen)壓(ya)器(qi)的(de)(de)使用壽命，好的(de)(de)熱(re)(re)調(diao)節(jie)很重要。EMI 是汽(qi)車電(dian)子產品(pin)的(de)(de)主要問(wen)題，包括 DC-DC 開(kai)(kai)關(guan)(guan)穩(wen)(wen)(wen)壓(ya)器(qi)。DC-DC 開(kai)(kai)關(guan)(guan)穩(wen)(wen)(wen)壓(ya)器(qi)通常用于為 BMS供(gong)電(dian)并從電(dian)池單元接(jie)收(shou)直流(liu)電(dian)流(liu)。高(gao)效(xiao)穩(wen)(wen)(wen)壓(ya)器(qi)可降低運營成本 。DC-DC 開(kai)(kai)關(guan)(guan)穩(wen)(wen)(wen)壓(ya)器(qi)設(she)計(ji)和實(shi)施的(de)(de)變化會顯著影響(xiang)其熱(re)(re)性能。LMR33630CQRNXRQ1是一款開(kai)(kai)關(guan)(guan)穩(wen)(wen)(wen)壓(ya)器(qi)。湖南(nan)進口(kou)LMR33630CQRNXRQ1供(gong)應商集成消除了大多數外(wai)部組件，并提供(gong)了專(zhuan)為簡單PCB布局設(she)計(ji)的(de)(de)引腳。

LMR33630CQRNXRQ1，電(dian)(dian)源良(liang)(liang)好輸出由一(yi)個開漏NMOS組成(cheng)，需(xu)要(yao)一(yi)個外部(bu)上拉電(dian)(dian)阻器連接到(dao)合(he)適的(de)邏輯電(dian)(dian)源。根(gen)據需(xu)要(yao)，還可以通過100-kΩ電(dian)(dian)阻器將其上拉至VCC或(huo)VOUT。如果不需(xu)要(yao)此功能(neng)(neng)，則(ze)PG引(yin)(yin)腳必須(xu)保(bao)持(chi)浮動狀態(tai)。當EN被(bei)拉低(di)時(shi)(shi)，標志輸出也被(bei)強制(zhi)拉低(di)。在(zai)EN低(di)的(de)情況(kuang)下(xia)，只要(yao)輸入(ru)電(dian)(dian)壓(ya)≥2 V（典型），電(dian)(dian)源良(liang)(liang)好就保(bao)持(chi)有(you)效。將進入(ru)電(dian)(dian)源良(liang)(liang)好標志引(yin)(yin)腳的(de)電(dian)(dian)流(liu)(liu)限制(zhi)在(zai)5 mA DC以下(xia)。當設(she)備(bei)啟用時(shi)(shi)，至大電(dian)(dian)流(liu)(liu)在(zai)內部(bu)限制(zhi)為約35 mA，當設(she)備(bei)禁用時(shi)(shi)，至大電(dian)(dian)壓(ya)限制(zhi)為約65 mA。內部(bu)電(dian)(dian)流(liu)(liu)限制(zhi)保(bao)護設(she)備(bei)免受連接到(dao)此輸出的(de)濾波電(dian)(dian)容器放電(dian)(dian)時(shi)(shi)可能(neng)(neng)發生的(de)任何瞬態(tai)電(dian)(dian)流(liu)(liu)的(de)影(ying)響。

集(ji)(ji)(ji)成(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)按(an)制作工藝分(fen)類(lei)：集(ji)(ji)(ji)成(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)按(an)制作工藝可分(fen)為(wei)(wei)半導體集(ji)(ji)(ji)成(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)和(he)(he)膜集(ji)(ji)(ji)成(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)。膜集(ji)(ji)(ji)成(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)又分(fen)類(lei)又可以分(fen)為(wei)(wei)厚膜集(ji)(ji)(ji)成(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)和(he)(he)薄(bo)膜集(ji)(ji)(ji)成(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)。集(ji)(ji)(ji)成(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)按(an)集(ji)(ji)(ji)成(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)度(du)高低進行分(fen)類(lei)，集(ji)(ji)(ji)成(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)按(an)集(ji)(ji)(ji)成(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)度(du)高低的(de)不同可以分(fen)為(wei)(wei)小規模(mo)集(ji)(ji)(ji)成(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)、中規模(mo)集(ji)(ji)(ji)成(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)、大(da)(da)規模(mo)集(ji)(ji)(ji)成(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)、超(chao)大(da)(da)規模(mo)集(ji)(ji)(ji)成(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)、特大(da)(da)規模(mo)集(ji)(ji)(ji)成(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)和(he)(he)巨(ju)大(da)(da)規模(mo)集(ji)(ji)(ji)成(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)。集(ji)(ji)(ji)成(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)按(an)應用領(ling)域(yu)分(fen)，集(ji)(ji)(ji)成(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)按(an)應用領(ling)域(yu)可分(fen)為(wei)(wei)標準(zhun)通用集(ji)(ji)(ji)成(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)和(he)(he)**集(ji)(ji)(ji)成(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)。LMR33630BQRNXTQ1是(shi)Texas Instruments品牌出的(de)一款(kuan)集(ji)(ji)(ji)成(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)開(kai)關穩壓器。降壓轉(zhuan)換器：可以轉(zhuan)換為(wei)(wei)較(jiao)低的(de)電(dian)(dian)(dian)(dian)壓。

在(zai)(zai)DCDC開(kai)關(guan)(guan)式降壓(ya)穩(wen)(wen)壓(ya)器中(zhong)，以電流連續模式較(jiao)為(wei)普(pu)遍。在(zai)(zai)一開(kai)關(guan)(guan)式的(de)(de)(de)穩(wen)(wen)壓(ya)器中(zhong)，除了PWM IC外，不外乎就(jiu)是(shi)電感(gan)(gan)了。因為(wei)在(zai)(zai)電源(yuan)能量(liang)的(de)(de)(de)轉(zhuan)換中(zhong)，都是(shi)透(tou)過電感(gan)(gan)來(lai)作控制(zhi)，也是(shi)為(wei)何(he)PWM IC的(de)(de)(de)對外驅動，信號(hao)的(de)(de)(de)偵測都是(shi)由電感(gan)(gan)的(de)(de)(de)特性來(lai)設計(ji)(ji)。一般來(lai)說，電容(rong)中(zhong)有三個較(jiao)為(wei)主要(yao)的(de)(de)(de)參(can)數(shu)值影響其(qi)輸(shu)出(chu)阻抗及漣波電壓(ya)，這三個參(can)數(shu)即是(shi)等效(xiao)串聯電阻(ESR)，等效(xiao)串聯電感(gan)(gan)及電容(rong)值)。隨著各式產(chan)品(pin)在(zai)(zai)外觀尺寸的(de)(de)(de)要(yao)求越來(lai)越小，于(yu)是(shi)在(zai)(zai)電路的(de)(de)(de)設計(ji)(ji)上也需要(yao)越加精簡及高度整合的(de)(de)(de)控制(zhi)IC。LMR33630BQRNXTQ1是(shi)一款(kuan)Texas Instruments的(de)(de)(de)開(kai)關(guan)(guan)穩(wen)(wen)壓(ya)器。LMR33630單(dan)開(kai)關(guan)(guan)3.8V至36-V，3-A同(tong)步降壓(ya)電壓(ya)轉(zhuan)換器。四川出(chu)口LMR33630CQRNXRQ1分銷商(shang)

電機驅動(dong)系統(tong)：無人機、AC逆變器、VF驅動(dong)器、伺(si)服器。湖南出口LMR33630CQRNXRQ1價格(ge)優惠

LMR33630CQRNXRQ1在內部LDO的(de)輸(shu)出端（VCC引腳(jiao)處）集成了欠壓(ya)鎖定功(gong)能(neng)。當VCC達到約(yue)3.7V時(shi)(shi)(shi)，設(she)備準備接收EN信號(hao)并啟動。當VCC降(jiang)至3V以(yi)下時(shi)(shi)(shi)，無(wu)論EN狀態如何，設(she)備都會關閉(bi)。由于LDO在這些轉(zhuan)換期(qi)間處于漏失狀態，因(yin)此上述(shu)值大致表示轉(zhuan)換期(qi)間的(de)輸(shu)入電壓(ya)電平。提(ti)供(gong)熱停堆以(yi)保護調(diao)節器不受結溫過高的(de)影響。當結溫達到165°C左右時(shi)(shi)(shi)，設(she)備關閉(bi)；當溫度(du)降(jiang)至約(yue)148°C時(shi)(shi)(shi)，重新啟動。

任何降(jiang)壓(ya)(ya)(ya)調(diao)節(jie)器的(de)壓(ya)(ya)(ya)降(jiang)性能都會(hui)(hui)受到功率MOSFET的(de)RDSON、電(dian)(dian)感器的(de)直(zhi)流電(dian)(dian)阻(zu)以(yi)(yi)及控制器可以(yi)(yi)實現的(de)至大占空(kong)比(bi)的(de)影響。隨著輸(shu)入電(dian)(dian)壓(ya)(ya)(ya)電(dian)(dian)平接(jie)近輸(shu)出電(dian)(dian)壓(ya)(ya)(ya)，高(gao)側MOSFET的(de)截止(zhi)時間開(kai)始接(jie)近至小值。超過(guo)這一點(dian)，開(kai)關(guan)可能會(hui)(hui)變得不穩定(ding)，輸(shu)出電(dian)(dian)壓(ya)(ya)(ya)會(hui)(hui)失控。為了避免(mian)這個問題，LMR33630CQRNXRQ1自動降(jiang)低開(kai)關(guan)頻(pin)率，以(yi)(yi)增加有(you)效占空(kong)比(bi)并保持調(diao)節(jie)。湖南出口(kou)LMR33630CQRNXRQ1價格優惠

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