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Dual Single-Phase PWM Controller for CPU Core/GFX Power Supply

RT8167A

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The RT8167A is a dual single-phase synchronous Buck PWM controller with integrated gate drivers, compliant with Intel VR12/IMVP7 specification. A serial VID (SVID) interface is built-in in the RT8167A to communicate with Intel VR12/IMVP7 compliant CPU. The integrated differential remote output voltage sensing function and built-in high accuracy DAC achieve accurate output voltage regulation.

The RT8167A supports VR12/ IMVP7 compatible power management states and VID on-the-fly function. The RT8167A operates in two power management states including DEM in PS2 and Forced-CCM in PS1/PS0. Richtek's proprietary G-NAVPTM (Green Native AVP) makes AVP (Active Voltage Positioning) design easier and more robust. By utilizing the G-NAVPTM topology, DEM and CCM efficiency can be improved.

The RT8167A integrates high accuracy ADC for platform setting functions, such as no-load offset or over current level. Individual VR ready output signals are provided for both CORE VR and GFX VR. The IC also features complete fault protection functions, including over voltage, under voltage, negative voltage, over current and under voltage lockout. The RT8167A is available in a WQFN-48L 6x6 small foot print package.

Applications

  • VR12 / IMVP7 Intel CPU Core Supply
  • AVP Step-down Converter
  • Notebook/ Netbook/ Desktop Computer CPU Core Supply
  • Notebooks
Key Spec.
RT8167A
Status Active
VID Table Support IMVP7;VR12
Number of Phases 1;1
Vcc (typ) (V) 5
Vin (min) (V) 5
Vin (max) (V) 25
Accuracy (Vout>=1V) (+/- %) 0.5
Freq (typ) (kHz) 300
Built-in DAC Generator Yes
Number of MOSFET Drivers 1;1
Features Adjustable Current Limit;Adjustable Frequency;Built-in Bootstrap Switch;Current Mode Control;Cycle-by-Cycle Current Limit;DCR Current Sense;Diode Emulation Mode;Droop Control;Enable Input;G-NAVP Control;OVP;Power Good;SCP;UVP
Package Type WQFN6x6-48
Features
  • G-NAVPTM (Green Native Active Voltage Positioning) Topology
  • Dual Output Controller with Two Built-in Gate Drivers
  • Serial VID Interface
  • 0.5% DAC Accuracy
  • Differential Remote Output Voltage Sensing
  • Built-in ADC for Platform Programming
  • Diode Emulation Mode (DEM) at Light Load Condition
  • Droop Enable/Disable
  • Fast Transient Response
  • VR12/IMVP7 Compatible Power Management States
  • VR Ready Indicator
  • Thermal Throttling Indicator
  • Current Monitor Output
  • Switching Frequency up to 1MHz per Phase
  • Protection : OVP, UVP, NVP, OCP, UVLO
  • Small 48-Lead WQFN Package
  • RoHS Compliant and Halogen Free
Datasheet
TitleLast UpdateShareDownload
Dual Single-Phase PWM Controller for CPU Core/GFX Power Supply2011/10/20
Reliability
Title Last Update ShareDownload
Dual Single-Phase PWM Controller for CPU Core/GFX Power Supply 2015/05/19
Technical Documents
TitleLast UpdateShareDownload
Richtek Vcore Product Selection List for Intel and AMD platforms [May, 2017]2018/11/15
Introduction to Richtek VCORE Solutions2017/10/18
Part NumberPackage TypePackage Qty.Free SampleBuy From Authorized Distributor
RT8167AGQWWQFN6x6-482500 Not available Buy from Distributor
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