由于(yu) PFM 的(de)(de)(de)開(kai)關頻率(lv)隨(sui)負載變化(hua)(hua)，輸出(chu)紋(wen)(wen)波(bo)(bo)的(de)(de)(de)頻率(lv)和幅度都(dou)不穩(wen)定，頻譜分(fen)布分(fen)散，給濾波(bo)(bo)設(she)計(ji)(ji)帶來很(hen)大挑戰(zhan)70。在(zai) PFM 模(mo)式下(xia)，電(dian)感處于(yu)間歇性(xing)充放電(dian)狀態，每次充放電(dian)的(de)(de)(de)電(dian)流(liu)變化(hua)(hua)較大，導致(zhi)輸出(chu)紋(wen)(wen)波(bo)(bo)增大。特(te)別是在(zai)輕負載時，PFM 的(de)(de)(de)紋(wen)(wen)波(bo)(bo)可(ke)能(neng)達到輸出(chu)電(dian)壓的(de)(de)(de) 5% 以(yi)(yi)(yi)上。PDM 控(kong)制(zhi)的(de)(de)(de)紋(wen)(wen)波(bo)(bo)特(te)性(xing)介于(yu) PWM 和 PFM 之間。PDM 的(de)(de)(de)輸出(chu)紋(wen)(wen)波(bo)(bo)主要取(qu)決于(yu)脈沖密度的(de)(de)(de)調(diao)(diao)節精度和濾波(bo)(bo)電(dian)路的(de)(de)(de)設(she)計(ji)(ji)。由于(yu) PDM 的(de)(de)(de)脈沖密度是離散調(diao)(diao)節的(de)(de)(de)，存(cun)在(zai)一(yi)(yi)定的(de)(de)(de)量(liang)化(hua)(hua)誤差，可(ke)能(neng)導致(zhi)紋(wen)(wen)波(bo)(bo)中包含周期性(xing)的(de)(de)(de)分(fen)量(liang)91。然而，PDM 的(de)(de)(de)頻譜相(xiang)(xiang)對(dui)集中，通過合理(li)的(de)(de)(de)濾波(bo)(bo)設(she)計(ji)(ji)可(ke)以(yi)(yi)(yi)獲(huo)得較好的(de)(de)(de)紋(wen)(wen)波(bo)(bo)特(te)性(xing)。為(wei)了改(gai)善(shan) PFM 和 PDM 的(de)(de)(de)紋(wen)(wen)波(bo)(bo)特(te)性(xing)，可(ke)以(yi)(yi)(yi)采(cai)用(yong)多種(zhong)技術(shu)(shu)手段。例(li)如(ru)，采(cai)用(yong)擴頻技術(shu)(shu)可(ke)以(yi)(yi)(yi)降低紋(wen)(wen)波(bo)(bo)的(de)(de)(de)峰值；采(cai)用(yong)多相(xiang)(xiang)交錯技術(shu)(shu)可(ke)以(yi)(yi)(yi)減少紋(wen)(wen)波(bo)(bo)的(de)(de)(de)幅度；采(cai)用(yong)有源濾波(bo)(bo)技術(shu)(shu)可(ke)以(yi)(yi)(yi)進一(yi)(yi)步改(gai)善(shan)紋(wen)(wen)波(bo)(bo)特(te)性(xing)68。此(ci)外，一(yi)(yi)些(xie)先進的(de)(de)(de)控(kong)制(zhi)器還(huan)采(cai)用(yong)預測(ce)控(kong)制(zhi)算(suan)法，通過提前調(diao)(diao)整開(kai)關狀態來減小紋(wen)(wen)波(bo)(bo)。為(wei)便攜(xie)式打印(yin)機(ji)供電(dian)，滿足設(she)備移動使(shi)用(yong)時的(de)(de)(de)供電(dian)需(xu)求。珠海高紋(wen)(wen)波(bo)(bo)抑制(zhi)DCDC電(dian)源選型方法

數字化功(gong)(gong)能(neng)：適配智能(neng)場(chang)景需求(qiu)通信接(jie)口：智能(neng)設備(bei)（數據(ju)中(zhong)心(xin)服務器(qi)、物聯網傳感器(qi)）需帶 I?C/SPI 接(jie)口的模(mo)塊(kuai)，支持遠(yuan)程監控電(dian)(dian)壓、電(dian)(dian)流、溫(wen)(wen)度，實現參(can)數遠(yuan)程配置。例：數據(ju)中(zhong)心(xin)需通過 I?C 接(jie)口實時監控每臺服務器(qi)電(dian)(dian)源(yuan)狀態，及時發現故(gu)障(zhang)。冗(rong)余功(gong)(gong)能(neng)：高(gao)可靠性場(chang)景（**呼吸機、自動(dong)(dong)駕駛）需支持雙模(mo)塊(kuai)并聯冗(rong)余，故(gu)障(zhang)切換時間＜100μs，確保供電(dian)(dian)不中(zhong)斷(duan)。6. 可靠性指標：評估長(chang)期穩定性MTBF（平(ping)均無故(gu)障(zhang)時間）：工(gong)業、汽(qi)車、**場(chang)景需 MTBF≥50 萬(wan)小時，避(bi)免(mian)頻繁更換模(mo)塊(kuai)；消費電(dian)(dian)子(zi)≥30 萬(wan)小時即(ji)可。壽命測(ce)試(shi)：優先選擇(ze)通過溫(wen)(wen)度循環測(ce)試(shi)（-40℃~+85℃，1000 次）、振動(dong)(dong)測(ce)試(shi)（10Hz~2000Hz/10G）的模(mo)塊(kuai)，確保長(chang)期穩定運行。珠(zhu)海(hai)高(gao)紋波抑制DCDC電(dian)(dian)源(yuan)選型方法設計緊湊，適合安裝在空(kong)間受限的電(dian)(dian)子(zi)設備(bei)內部。

工(gong)業控制場景(jing)(jing)：對抗(kang) “惡劣環(huan)境(jing)” 與 “長(chang)期穩定(ding)” 的(de)(de)雙重(zhong)考(kao)驗工(gong)業控制場景(jing)(jing)（PLC、傳感器、伺服電(dian)(dian)(dian)(dian)機）的(de)(de)主要訴求(qiu)是(shi) “長(chang)期可靠”，但(dan)車間(jian)的(de)(de)高(gao)溫(wen)、粉塵、電(dian)(dian)(dian)(dian)壓波動等(deng)惡劣條(tiao)件(jian)，對 DCDC 電(dian)(dian)(dian)(dian)源的(de)(de)環(huan)境(jing)適應性提出***要求(qiu)，難(nan)點集中在(zai)三(san)點：1. 寬(kuan)溫(wen)環(huan)境(jing)下(xia)的(de)(de)器件(jian)參數漂(piao)移(yi)(yi)工(gong)業車間(jian)的(de)(de)溫(wen)度(du)范圍(wei)通(tong)常(chang)(chang)為(wei) - 40℃~+105℃，遠超過消費電(dian)(dian)(dian)(dian)子的(de)(de) 0℃~+60℃，極端溫(wen)度(du)會(hui)導(dao)致(zhi) DCDC 電(dian)(dian)(dian)(dian)源的(de)(de)關鍵器件(jian)參數大(da)幅(fu)漂(piao)移(yi)(yi)：開(kai)關管性能(neng)衰(shuai)減：低溫(wen)（-40℃）下(xia)，MOSFET 的(de)(de)導(dao)通(tong)電(dian)(dian)(dian)(dian)阻（Rds (on)）可能(neng)增加 3 倍以上，導(dao)通(tong)損耗(hao)飆升；高(gao)溫(wen)（+105℃）下(xia)，MOSFET 的(de)(de)比(bi)較大(da)漏極電(dian)(dian)(dian)(dian)流（Id (max)）會(hui)下(xia)降 40%，導(dao)致(zhi)輸(shu)出功(gong)率(lv)(lv)不(bu)足；電(dian)(dian)(dian)(dian)感磁(ci)(ci)芯老化(hua)(hua)：工(gong)業級電(dian)(dian)(dian)(dian)感常(chang)(chang)用的(de)(de)鐵氧體磁(ci)(ci)芯在(zai)高(gao)溫(wen)下(xia)會(hui)出現磁(ci)(ci)導(dao)率(lv)(lv)下(xia)降（+100℃時磁(ci)(ci)導(dao)率(lv)(lv)降低 20%），導(dao)致(zhi)電(dian)(dian)(dian)(dian)感值漂(piao)移(yi)(yi)超過 15%，破壞(huai)伏(fu)秒平(ping)衡，輸(shu)出電(dian)(dian)(dian)(dian)壓精度(du)從(cong) ±1% 惡化(hua)(hua)到 ±5%；電(dian)(dian)(dian)(dian)容(rong)壽命(ming)縮短：鋁電(dian)(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)(dian)容(rong)在(zai) + 105℃下(xia)的(de)(de)壽命(ming)為(wei) 2000 小時（約(yue) 3 個月），即(ji)使采用固(gu)態電(dian)(dian)(dian)(dian)容(rong)，壽命(ming)也 8000 小時（約(yue) 1 年），遠低于工(gong)業設備 “5 年無故障” 的(de)(de)要求(qiu)。

DC/DC 電(dian)(dian)(dian)(dian)(dian)源(yuan)是(shi)一種將直流電(dian)(dian)(dian)(dian)(dian)（DC）從(cong)一個電(dian)(dian)(dian)(dian)(dian)壓值(zhi)轉換(huan)為另一個電(dian)(dian)(dian)(dian)(dian)壓值(zhi)的(de)電(dian)(dian)(dian)(dian)(dian)源(yuan)裝(zhuang)置。以下是(shi)關于它的(de)詳細介紹：工作原理：DC/DC 電(dian)(dian)(dian)(dian)(dian)源(yuan)屬于斬波類型，通(tong)(tong)(tong)過控制(zhi)高速開(kai)關（如 MOSFET）的(de)通(tong)(tong)(tong)斷，按(an)照一定的(de)調制(zhi)方式，將輸(shu)(shu)入直流電(dian)(dian)(dian)(dian)(dian)壓斬波，再經電(dian)(dian)(dian)(dian)(dian)感、電(dian)(dian)(dian)(dian)(dian)容等儲能和濾波元件，實現直流電(dian)(dian)(dian)(dian)(dian)源(yuan)電(dian)(dian)(dian)(dian)(dian)平(ping)的(de)變換(huan)。調制(zhi)方式脈(mo)沖(chong)寬度調制(zhi)（PWM）：開(kai)關周(zhou)期恒定，通(tong)(tong)(tong)過改變開(kai)關導通(tong)(tong)(tong)時間與周(zhou)期的(de)占(zhan)空比來(lai)調節輸(shu)(shu)出電(dian)(dian)(dian)(dian)(dian)壓。其優點是(shi)開(kai)關噪聲可預測、濾波器(qi)設(she)計容易(yi)；缺點是(shi)輕負載時開(kai)關損(sun)耗大，效率降低(di)。可定制(zhi)輸(shu)(shu)出電(dian)(dian)(dian)(dian)(dian)壓與電(dian)(dian)(dian)(dian)(dian)流參數，適配特定設(she)備需求。

電(dian)(dian)(dian)(dian)動汽車充電(dian)(dian)(dian)(dian)樁(zhuang)(zhuang)(zhuang)應用需(xu)求(qiu)：直(zhi)流(liu)(liu)充電(dian)(dian)(dian)(dian)樁(zhuang)(zhuang)(zhuang)需(xu)為(wei)控制(zhi)板（如主控 MCU、人(ren)機交互屏）提(ti)供(gong)(gong)穩定低壓(ya)供(gong)(gong)電(dian)(dian)(dian)(dian)，同時(shi)需(xu)耐受電(dian)(dian)(dian)(dian)網電(dian)(dian)(dian)(dian)壓(ya)波動（如 380V AC 波動 ±15%）與充電(dian)(dian)(dian)(dian)樁(zhuang)(zhuang)(zhuang)運(yun)行(xing)時(shi)的(de)高溫(wen)(wen)(wen)（內部溫(wen)(wen)(wen)度可達(da) + 70℃），且模(mo)(mo)(mo)塊(kuai)(kuai)需(xu)通過(guo)(guo)(guo) UL/CE **認證(zheng)。模(mo)(mo)(mo)塊(kuai)(kuai)適配方案：采用輸(shu)入 85V-264V AC（內置 AC/DC 整流(liu)(liu)）、輸(shu)出(chu)(chu) 12V/3A 的(de)隔離(li)式(shi) DCDC 模(mo)(mo)(mo)塊(kuai)(kuai)，集(ji)成過(guo)(guo)(guo)溫(wen)(wen)(wen)保(bao)護(hu)（閾(yu)值 + 85℃）與過(guo)(guo)(guo)壓(ya)保(bao)護(hu)（15V），符(fu)合 GB/T 18487.1 充電(dian)(dian)(dian)(dian)樁(zhuang)(zhuang)(zhuang)**標準。某(mou)品牌 60kW 直(zhi)流(liu)(liu)充電(dian)(dian)(dian)(dian)樁(zhuang)(zhuang)(zhuang)搭載(zai)的(de) 36W 模(mo)(mo)(mo)塊(kuai)(kuai)，在電(dian)(dian)(dian)(dian)網電(dian)(dian)(dian)(dian)壓(ya)跌落至 85V 時(shi)，仍(reng)能(neng)穩定輸(shu)出(chu)(chu) 12V，確(que)保(bao)充電(dian)(dian)(dian)(dian)過(guo)(guo)(guo)程不中(zhong)斷(duan)，充電(dian)(dian)(dian)(dian)成功率(lv)達(da) 99.9%。典型案例：某(mou)高速公路服(fu)務(wu)區的(de) 10 臺直(zhi)流(liu)(liu)充電(dian)(dian)(dian)(dian)樁(zhuang)(zhuang)(zhuang)，通過(guo)(guo)(guo) DCDC 模(mo)(mo)(mo)塊(kuai)(kuai)為(wei)控制(zhi)單元供(gong)(gong)電(dian)(dian)(dian)(dian)，模(mo)(mo)(mo)塊(kuai)(kuai)轉換效率(lv)達(da) 95%，相(xiang)比傳統開關電(dian)(dian)(dian)(dian)源，單臺充電(dian)(dian)(dian)(dian)樁(zhuang)(zhuang)(zhuang)年(nian)減少能(neng)耗(hao)約 120 度，服(fu)務(wu)區年(nian)省(sheng)電(dian)(dian)(dian)(dian)費超 8400 元，同時(shi)模(mo)(mo)(mo)塊(kuai)(kuai)支持熱插拔，維護(hu)時(shi)無需(xu)斷(duan)電(dian)(dian)(dian)(dian)，減少充電(dian)(dian)(dian)(dian)樁(zhuang)(zhuang)(zhuang)停(ting)機時(shi)間(jian)。為(wei)車載(zai)雷達(da)系統供(gong)(gong)電(dian)(dian)(dian)(dian)，提(ti)供(gong)(gong)高精度電(dian)(dian)(dian)(dian)壓(ya)，保(bao)障探測準確(que)性。珠海高紋(wen)波抑(yi)制(zhi)DCDC電(dian)(dian)(dian)(dian)源選型方法

支持休眠模式，設備閑置時(shi)降低(di)功耗(hao)，節約電能。珠海高(gao)紋波(bo)抑(yi)制DCDC電源(yuan)選型方法(fa)

全場景適配，賦能(neng)多行(xing)業創(chuang)新針(zhen)對不同行(xing)業的特(te)殊(shu)需求(qiu)，DCDC 電源(yuan)模塊提供(gong)(gong)定(ding)制(zhi)化解(jie)決方案：工(gong)業自動化：支持導軌式安裝，抗電磁干擾(rao)(rao)（EMC 等級達 EN 55032 Class B），適配 PLC、變(bian)頻器(qi)等設(she)備(bei)，保障生產(chan)線 24 小時不間斷供(gong)(gong)電；新能(neng)源(yuan)領域：具備(bei)防(fang)反接、防(fang)雷擊設(she)計，可直接接入光(guang)伏陣列(lie)或儲能(neng)電池組，為逆變(bian)器(qi)、充(chong)電樁提供(gong)(gong)穩定(ding)直流電源(yuan)；消費電子(zi)：采用迷(mi)你封(feng)裝（至(zhi)小尺寸 6.5mm×3.5mm），集(ji)成紋(wen)波(bo)抑(yi)制(zhi)功能(neng)（輸出紋(wen)波(bo)≤20mV），滿(man)足智能(neng)手機、物聯網傳感(gan)器(qi)等小型設(she)備(bei)的供(gong)(gong)電需求(qiu)；**設(she)備(bei)：通過 UL60601 **認證，漏(lou)電流≤100μA，符合(he)**設(she)備(bei)高(gao)絕(jue)緣(yuan)、低干擾(rao)(rao)的嚴苛標準，為監護儀、超聲設(she)備(bei)提供(gong)(gong)**供(gong)(gong)電。珠海高(gao)紋(wen)波(bo)抑(yi)制(zhi)DCDC電源(yuan)選型方法

太科節(jie)能(neng)科技（深(shen)圳(zhen)）有限(xian)公(gong)司(si)在(zai)同(tong)行業(ye)(ye)領域中，一直處在(zai)一個(ge)不(bu)斷(duan)銳意進取，不(bu)斷(duan)制造創新(xin)的(de)(de)市(shi)場高度(du)，多(duo)年(nian)以(yi)(yi)來(lai)(lai)致力(li)于發(fa)展富有創新(xin)價值理念的(de)(de)產品標準，在(zai)廣東省等地區的(de)(de)電(dian)(dian)工(gong)電(dian)(dian)氣中始終保持(chi)良(liang)好的(de)(de)商業(ye)(ye)**，成績讓(rang)我(wo)(wo)們喜悅，但不(bu)會(hui)(hui)讓(rang)我(wo)(wo)們止步，殘酷的(de)(de)市(shi)場磨煉了(le)我(wo)(wo)們堅強不(bu)屈的(de)(de)意志，和諧溫(wen)馨的(de)(de)工(gong)作環境，富有營(ying)養的(de)(de)公(gong)司(si)土壤滋養著我(wo)(wo)們不(bu)斷(duan)開拓創新(xin)，勇于進取的(de)(de)無(wu)限(xian)潛(qian)力(li)，太科節(jie)能(neng)科技供應攜手大家一起走(zou)向共同(tong)輝煌(huang)的(de)(de)未來(lai)(lai)，回首過去，我(wo)(wo)們不(bu)會(hui)(hui)因為(wei)取得了(le)一點點成績而沾(zhan)沾(zhan)自喜，相反的(de)(de)是面對競爭越來(lai)(lai)越激烈的(de)(de)市(shi)場氛圍，我(wo)(wo)們更要明確(que)自己的(de)(de)不(bu)足，做好迎接新(xin)挑戰的(de)(de)準備，要不(bu)畏困(kun)難，激流勇進，以(yi)(yi)一個(ge)更嶄新(xin)的(de)(de)精神面貌迎接大家，共同(tong)走(zou)向輝煌(huang)回來(lai)(lai)！