PD快充 I2S輸入內(nèi)置DSP數(shù)字功放IC組合助推兩節(jié)串聯(lián)鋰電為電源的藍(lán)牙音箱性能升級
引言
隨著生活水平的提高,大家都想從生活壓力中釋放出來,越來越多的人向往戶外運(yùn)動(dòng)、露營等,在大自然的擁抱中釋放壓力,解放自我,從而成為戶外旅行火熱的原因之一。因此,很多音箱廠商都開始推出針對戶外的戶外藍(lán)牙音箱。但是市面上的藍(lán)牙音箱普遍存在續(xù)航短、音質(zhì)差等諸多痛點(diǎn)。
深圳市永阜康科技有限公司一直專注于耕耘音頻市場,現(xiàn)針對兩節(jié)鋰電串聯(lián)供電的戶外藍(lán)牙音箱應(yīng)用,推出PD2.0/QC2.0快充+I2S輸入內(nèi)置DSP數(shù)字功放音頻升壓充電組合方案。該方案有三個(gè)組合級:
整體方案設(shè)計(jì)電源采用兩節(jié)鋰電串聯(lián)供電,充電芯片采用M3033;M3033是一款內(nèi)置PD2.0/QC2.0等快充協(xié)議的多節(jié)100W升降壓鋰電充電管理芯片,工作電壓范圍 4.5-25V、可支持2-7串鋰電快速充電?,F(xiàn)在隨著音箱功率越做越大,為保證續(xù)航時(shí)間而加大電池容量,戶外藍(lán)牙音箱很多采用兩串多并,傳統(tǒng)的充電管理芯片充電過程過于漫長,M3033能實(shí)現(xiàn)大容量鋰電池組快速充電。直接使用Type-C充電,無需專用適配器、避免資源浪費(fèi)。
電源升壓采用HT7181,兩串鋰電升壓至15V,效率高達(dá)93%;HT7181具有2.7V至16V寬輸入電壓范圍,可為采用單節(jié)或兩節(jié)鋰電池,或12V鉛酸電池的應(yīng)用提供支持。該器件具備14A開關(guān)電流能力,并且能夠提供最高17.8V的輸出電壓;芯片采用ESOP-8封裝,外圍簡單。
音頻放大部分采用FS2105,15V供電輸出2*20W/4歐(THD+1%);FS2105E是一款集成傅里葉FS Techno音效算法的雙通道中功率音頻放大芯片,最高支持2x30W立體聲BTL或60W單聲道PBTL輸出。相比較傳統(tǒng)模擬輸入的音頻功放,在底噪、信噪比等方面優(yōu)勢明顯;內(nèi)置15段EQ調(diào)節(jié)及三段DRC,簡潔的調(diào)音軟件界面工程師容易上手,實(shí)現(xiàn)完美的音質(zhì)輸出。
方案說明
整體方案簡圖
FS2105數(shù)字功放芯片原理圖
M3033快充芯片原理圖
HT7181升壓芯片原理圖
整體演示板PCB頂層設(shè)計(jì)圖
整體演示板PCB底層設(shè)計(jì)圖
整體演示板貼片圖
整體演示板物料清單
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" alt="PD快充 I2S輸入內(nèi)置DSP數(shù)字功放IC組合助推兩節(jié)串聯(lián)鋰電為電源的藍(lán)牙音箱性能升級" />
FS2105整體演示板實(shí)物圖