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RT8816A 是一款 2/1 相同步降压 PWM 控制器，针对高性能图形微处理器进行优化，并通过 PWM-VID 接口支持 nVidia OVR2 规范。此 IC 集成固定导通时间 (COT) PWM 控制器、两个具内部自举二极管的 MOSFET 驱动器，以及通道电流平衡与保护功能，包括过压保护 (OVP)、欠压保护 (UVP)、电流限制与热关断，所有功能皆集成于 WQFN-20L 3x3 封装中。</br>RT8816A 采用 RDS(ON) 电流检测技术进行电流限制，通过连续电感电流检测来实现，同时使用 RDS(ON) 电流检测进行精准的通道电流平衡。此电流采样方法充分利用各项技术的最佳优势。</br>RT8816A 的功能包括外部参考输入与 PWM-VID 动态输出电压控制，其中反馈电压会被调节以跟踪外部输入参考电压。其他功能包括可调式开关频率、动态相数控制、内部软启动、电源良好指示器与启用功能。建议结温范围为 -10°C 至 105°C。
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<li class="mv5"> Dual-Phase PWM Controller <br> </li><li class="mv5"> Power State Indicator<br> ► 1P-CCM/2P-CCM/1P-DEM/2P-DEM<br> </li><li class="mv5"> Two Embedded MOSFET Drivers and Embedded Switching Boot Diode<br> </li><li class="mv5"> Support 1.8V PWM-VID Interface <br> </li><li class="mv5"> External Reference Input Control<br> </li><li class="mv5"> PWM-VID Dynamic Voltage Control<br> </li><li class="mv5"> Dynamic Phase Number Control<br> </li><li class="mv5"> Lossless RDS(ON) Current Sensing for Current Balance<br> </li><li class="mv5"> Internal/External Soft-Start<br> </li><li class="mv5"> Adjustable Current Limit Threshold<br> </li><li class="mv5"> Adjustable Switching Frequency<br> </li><li class="mv5"> UVP/OVP Protection<br> </li><li class="mv5"> Shoot Through Protection and Short Pulse Free Technology<br> </li><li class="mv5"> Support an Ultra-Low Output Voltage as Standby Voltage<br> </li><li class="mv5"> Thermal Shutdown<br> </li><li class="mv5"> Power Good Indicator (EN to PG high = 500μs)</li>
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<li class="mv5"> CPU/GPU Core Power Supply<br> </li><li class="mv5"> Desktop PC Memory, VTT Power<br> </li><li class="mv5"> Chipset/RAM Power Supply<br> </li><li class="mv5"> Generic DC-DC Power Regulator</li>
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