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The RT3661AB is a dual-output PWM controller with 2 integrated drivers, and it is compliant with AMD SVI2 Voltage Regulator Specification to support both CPU core (VDD) and Northbridge portion of CPU (VDDNB). The RT3661AB features CCRCOT (Constant Current

Ripple Constant On-Time) with G-NAVP (Green-Native AVP), which is Richtek's proprietary topology. G-NAVP makes it an easy setting controller to meet all AMD AVP (Adaptive Voltage Positioning) VDD/VDDNB requirements. The droop is easily programmed by setting the DC gain of the error amplifier. With proper compensation, the load transient response can achieve optimized AVP performance. The controller also uses the interface to issue VOTF Complete and to send digitally encoded voltage and current values for the VDD/VDDNB domains. The RT3661AB can operate in diode emulation mode to enhance the light load efficiency. And it provides the current gain adjustment capability by pin setting. The RT3661AB provides power good indication, thermal indication (VRHOT_L), and it features complete fault protection functions including over current, over voltage, under voltage.

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  • 2/1-相 (VDD) + 1/0-相 (VDDNB) PWM 控制器
  • 2 组集成化的 MOSFET 驱动器
  • G-NAVPTM 架构
  • 支持动态负载线和零负载线
  • 轻载条件下进入二极管仿真模式
  • SVI2 接口，符合 AMD 电源管理协议
  • 可调电流增益功能
  • DVID 性能强化
  • 0.5% DAC 精准度
  • 差分远程电压检测
  • 内建 ADC ，用于引脚编程设置、过热指示、VOUT 和 IOUT 报告
  • 快速瞬态响应
  • Power Good 指示
  • 过热指示 (VRHOT_L)
  • 过压和欠压保护，欠压锁定
  • 过流保护
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AMD SVI2 移动CPU 笔记本电脑
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