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RT8848A/B 是使用 PWM-VID 介面、性能针对高性能影像处理器应用进行了优化并支援 nVidia OVR4i+ 规格的 8/7/6/5/4/3/2/1 相同步 Buck 控制器，它采用立锜专有的以有限直流增益误差放大器为基础的电流模式控制架构的 AC G-NAVP<SUP>™</SUP> 控制技术，即使在电流连续模式之下的工作频率也可根据 VID、负载和输入电压而自动变化以取得很好的工作效率，可支援传统的电感电流 DCR 检测方法或智慧功率级所直接提供的电流监测信号。</br>RT8848A/B 具有外部参考输入端，可接受 PWM-VID 进行输出电压动态调节，使其输出电压可跟随外部参考输入而变化。通过其 PINSETx 引脚可对内部斜波幅度进行设定以实现对稳定性和负载瞬态回应特性的优化调节。它还具有完善的故障保护特性，其中包括过压保护、欠压保护、通道过流保护、输出总电流保护和过热保护等。
RT8848A/RT8848B 电路图
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<div class="spec-list"><ul class="lv1"><li>多相 Buck 控制器 </li><li>PWM-VID 动态电压控制 </li><li>支援 1.8V PWM-VID 介面 </li><li>电源状态指示： <ul class="lv2"> <li></li><li>LPC（相数少），PSI = Low </li><li>APS（自动相数调节），PSI = Mid </li><li>HPC（相数多），PSI = High </li></ul> </li><li>接受外部参考输入 </li><li>可用硬体进行相数（8/7/6/5/4/3/2/1）设定 </li><li>软启动时间可调 </li><li>工作频率可调 </li><li>可调相间电流均衡 </li><li>支援待机模式 </li><li>UVP/OVP/OTP/SOC/CH_OC/TSEN 保护 </li><li>保护阈值可调 </li><li>Power Good 指示 </li><li>使用 ADC 采集 IMON、TSEN、VSEN 资讯 </li><li>支援通过 I<sup>2</sup>C 介面进行控制 </li><li>符合 RoHS 规范，不含卤素 </li></ul></div>
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RT8848A/RT8848B 订购信息
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RT8848A/RT8848B
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RT8848A/RT8848B
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<div class="spec-list"><ul class="lv1"><li>符合 nVidia OVR4+ 规范的 GPU 内核供电 </li></ul></div>
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