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RT3664 是一款 4 + 2 相 PWM 控制器,並符合 AMD SVI2 電壓調節器規範,可同時支援 CPU 核心(VDD)與 CPU 北橋(VDDNB)供電。RT3664 採用 CCRCOT(Constant Current Ripple Constant On-Time,定電流漣波定導通時間)搭配 G-NAVP(Green-Native AVP),此為立錡的專有拓撲。G-NAVP 使控制器更容易設定,以滿足 AMD AVP(Active Voltage Positioning)對 VDD/VDDNB 的各項需求。透過設定誤差放大器的直流增益即可輕鬆程式化下垂(droop)。在適當補償下,負載瞬態響應可達到最佳化的 AVP 表現。此控制器亦使用介面發出 VOTF Complete,並傳送以數位編碼的電壓與電流數值,供 VDD 與 VDDNB 供電域使用。其可在單相與二極體模擬(diode emulation)模式下運作,並可依不同負載條件在不同模式中達到最高 90% 的效率。RT3664 可透過腳位設定提供特殊用途的偏移(offset)能力。RT3664 亦提供 Power Good 指示、過電流指示(OCP_L),以及針對 AMD SVI2 CPU 核心與 NB 的雙 OCP 機制。並具備故障保護功能,包括過電壓、欠電壓與負電壓保護。
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