RT8859AGQW

RT8859A - Multi-Phase PWM Controller for CPU Core Power Supply | Richtek Technology About Richtek | Contact Us | English Product Linear Regulator (LDO)   Products Switching Regulators Vcore LED Driver Applications Vcore RT8859A Update Alert Share The RT8859A is a VR12/IMVP7 compliant CPU power controller which includes two voltage rails : a 4/3/2/1 phase synchronous buck controller, the CORE VR, and a single phase buck controller, the GFX VR. The RT8859A adopts G-NAVPTM (Green Native AVP), which is Richtek's proprietary topology derived from finite DC gain compensator with current mode control, making it an easy setting PWM controller, meeting all Intel CPU requirements of AVP (Active Voltage Positioning). Based on the G-NAVPTM topology, the RT8859A also features a quick response mechanism for optimized AVP performance during load transient. The RT8859A supports mode transition function with various operating states. A serial VID (SVID) interface is built in the RT8859A to communicate with Intel VR12/IMVP7 compliant CPU. The RT8859A supports VID on-the-fly function with three different slew rates : Fast, Slow and Decay. By utilizing the G-NAVPTM topology, the operating frequency of the RT8859A 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 RT8859A integrates a high accuracy ADC for platform setting functions, such as no-load offset or over current level. The RT8859A provides VR ready output signals for both CORE VR and GFX VR. It also features complete fault protection functions including over voltage, under voltage, negative voltage, over current and under voltage lockout. The RT8859A is available in a WQFN-56L 7x7 small footprint package. Operational Amplifier Power Management MultiChannel IC (PMIC) Supervisor AC-DC Audio History > RT8859A PC System Buck Controller My Richtek Vcore Controller Multi-Phase PWM Controller for CPU Core Power Supply MOSFET Driver Parametric Search > Battery Management Power Switch Design Support > Products > Motor Driver USB Interface and PD Controller MEMS and Sensors Applications VR12 / IMVP7 Intel CPU Core Supply AVP Step-down Converter Notebook/ Desktop Computer/ Servers Multi-Phase CPU Core Supply Key Spec. & Features Key Spec. https://www.richtek.com/Products/Vcore/Vcore%20Controller/RT8859A[7/19/2018 8:22:59 AM] Ordering Information RT8859A - Multi-Phase PWM Controller for CPU Core Power Supply | Richtek Technology Features 4/3/2/1 + 1 Phase PWM Controller RT8859A Status Green-NAVP TM (Green Native Adaptive Voltage Positioning) Topology NRND Recommended Alternative  Serial VID Interface 0.5% DAC Accuracy VID Table Support VR12 Number of Phases 1;4 Vcc (typ) (V) 5 Vin (min) (V) 10.8 Vin (max) (V) 13.2 Accuracy (Vout>=1V) (+/- %) 0.5 Freq (typ) (kHz) 300 Built-in DAC Generator Yes Number of MOSFET Drivers 0 Features Adjustable Frequency;DCR Current Sense;Droop Control;Enable Input;OCP;OVP;Power Good Package Type WQFN7x7-56 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 Multiple and Single Phase Fast Transient Response VR12 / IMVP7 Compatible Power Management States VR Ready Indicator Thermal Throttling Current Monitor Output Switching Frequency up to 1MHz per Phase OVP, NVP, UVP, OCP, UVLO Small 56-Lead WQFN Package RoHS Compliant and Halogen Free Get to Know Us Find Products Get Support My Richtek Follow Us About Richtek Switching Regulators Technical Documents My Profile Youtube News Release Motherboard Design Tools Product Newsletters LinkedIn Parametric Search Contact Us Datasheet Alert Facebook Cross Reference Mobile Site https://www.richtek.com/Products/Vcore/Vcore%20Controller/RT8859A[7/19/2018 8:22:59 AM] | Privacy Policy | Copyright © 2014 Richtek Technology Corporation. All Rights Reserved.