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The RT2776 is a VR12/IMVP7 compliant CPU power controller which includes two channels : a 3/2/1 phase with 3 integrated drivers synchronous Buck controller for the CORE VR, and a single phase Buck controller for the AXG VR. The RT2776 adopts G-NAVP<sup>TM</sup> (Green Native Adaptive Voltage Positioning), which is Richtek's proprietary topology derived from a finite DC gain compensator with current mode control, making it an easy setting PWM controller, meeting all Intel CPU requirements of AVP. Based on the G-NAVP<sup>TM</sup> topology, the RT2776 also features a quick response mechanism for optimizing AVP performance during load transient. The RT2776 supports mode transition function with various operating states. A serial VID (SVID) interface is built in the RT2776 to communicate with Intel VR12/IMVP7 compliant CPU. The RT2776 supports VID on-the-fly function with three different slew rates : Fast, Slow and Decay. By utilizing the G-NAVP<sup>TM</sup> topology, the operating frequency of the RT2776 varies with VID, load and input voltage to further enhance the efficiency even in CCM. The built-in high accuracy DAC converts the SVID code ranging from 0.25V to 1.52V with 5mV per step. The RT2776 integrates a high accuracy ADC for platform setting functions, such as no-load offset or over current level.
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  • VR12/IMVP7 Compatible Power Management
  • 3/2/1 Phase for CORE VR and Single Phase for AXG VR
  • 3 Embedded MOSFET Drivers at the CORE VR
  • G-NAVPTM Topology
  • Serial VID Interface
  • 0.5% DAC Accuracy
  • Differential Remote Voltage Sensing
  • Built-in ADC for Platform Programming
  • Accurate Current Balance
  • System Thermal Compensated AVP
  • Diode Emulation Mode at Light Load Condition for Single Phase
  • Fast Transient Response
  • 1.1VINITIAL / 0.0VINITIAL for both Rails at Startup
  • Power Ready Indicator
  • Thermal Throttling
  • Current Monitor Output
  • OVP, UVP, OCP, OTP, UVLO
  • External No-load Offset Setting for both Rails
  • DVID Enhancement
  • 56-Lead WQFN Package
  • RoHS Compliant and Halogen Free
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VR12/IMVP7 Intel Core Supply<br />Notebook/ Desktop Computer/ Servers Multi-phase CPU Core Supply<br />AVP Step-Down Converter
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Keyword 1

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