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Product Spec Banner
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RT8894A是多相PWM控制器，此外符合AMD SVI2 電壓調節器規範，可以同時為CPU內核（VDD）和其北橋部分（VDDNB）供電。它採用立錡專有的 G-NAVP (Green-Native AVP) 技術和 CCRCOT（Constant Current Ripple Constant On-Time，固定電流漣波固定導通時間）控制架構，易於設定、控制，可滿足 AMD AVP (Adaptive Voltage Positioning) VDD/VDDNB 的所有要求。其壓降特性可通過對誤差放大器的直流增益進行設定而實現；使用適當的補償設計，符合 AVP 性能要求的瞬態回應特性也很容易獲得。</br>RT8894A使用SVI2介面控制8位元DAC設定輸出電壓及操作模式，及支援動態平臺主，I<SUP>2</SUP>C介面採用先進的配置及監控。RT8894A特色在於具有可程式設計的功率級距於不同操作相數，包含超頻偏移、開關頻率、負載線及保護設定組合。平臺主可根據不同工作腳本，通過I<SUP>2</SUP>C介面優化功率的表現及效能。</br>RT8894A還提供了電源準備好指示信號、過流指示信號以及兩種過流保護機制，完善的故障保護功能亦包含其中，如過壓保護、欠壓保護和負壓保護。
RT8894A 電路圖
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basicInfoImageSection
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orderingInformationSection
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<div class="spec-list"><ul class="lv1"><li>雙道輸出: <ul class="lv2"> <li></li><li>4/3/2/1相 VDD </li><li>2/1/0相 VDDNB </li></ul> </li><li>用於VDD VR的整合3個MOSFET驅動器 </li><li>功率階段输入用於VDD VR電壓範圍高達20V </li><li>G-NAVP™架構 </li><li>支援動態負載線和零負載線 </li><li>支援輕載條件下的二極體模擬模式 </li><li>使用 SVI2 介面以支援 AMD 電源管理協定 </li><li>內建 ADC 以支援 V<sub>OUT</sub> 和 I<sub>OUT</sub> 報告機制 </li><li>及時的過壓、欠壓和負壓保護及欠壓鎖定保護 </li><li>可程式設計的雙重過流保護機制 </li><li>準確電流平衡 </li><li>快速瞬態回應 </li><li>動態相高低控制 </li><li>可程式設計的功率級距控制 </li><li>VDD VR 電源準備好指示 </li><li>VDD 和 VDDNB VR熱監控 </li><li>56引腳 WQFN 封裝 </li><li>符合 RoHS 規範，不含鹵素 </li></ul></div>
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productFeatureSection
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productSectionTab
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orderingInformationSection
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RT8894A 訂購資訊
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productSection
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evbSection
orderingDetail
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orderingDetailSection
technical-documents
RT8894A
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technicalDocumentationSection
design-tools
RT8894A
designToolMultipleTable
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designToolSection
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56
rt-blue-800
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<div class="spec-list"><ul class="lv1"><li>AMD SVI2 CPU </li><li>桌上型電腦 </li></ul></div>
applicationContent
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keywordList
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applicationSection
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i18n(support-card-item.technical-support.url)
technicalSupportCard
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i18n(support-card-item.ordering.learn-more-text)
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orderingSupportCard
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i18n(support-card-item.sales.learn-more-text)
i18n(support-card-item.sales.url)
salesSupportCard
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