NCP81247MNTXG ON Semiconductor

NCP81247 Dual Output 4 & 2 Phase Controller with SVID Interface for Desktop and Notebook CPU Applications www.onsemi.com The NCP81247 dual output four plus two phase buck solution is optimized for Intels IMVP8 CPUs. The controller combines true differential voltage sensing, differential inductor DCR current MARKING sensing, input voltage feedforward, and adaptive voltage positioning DIAGRAM to provide accurately regulated power for notebook applications. The control system is based on DualEdge pulsewidth modulation 1 52 (PWM) combined with DCR current sensing providing an ultra fast NCP81247 AWLYYWWG initial response to dynamic load events and reduced system cost. The QFN52 MN SUFFIX NCP81247 provides the mechanism to shed phases during light load CASE 485BE operation and can auto frequency scale in light load conditions while maintaining excellent transient performance. NCP81247 = Specific Device Code Dual high performance operational error amplifiers are provided to A = Assembly Location WL = Wafer Lot simplify compensation of the complete system. Patented Dynamic YY = Year Reference Injection further simplifies loop compensation by WW = Work Week eliminating the need to compromise between closedloop transient G = PbFree Package response and Dynamic VID performance. Patented Total Current Summing provides highly accurate current monitoring for droop and digital current monitoring. ORDERING INFORMATION Features Device Package Shipping Meets Intels IMVP8 Specification NCP81247MNTXG QFN52 2500 / Tape Current Mode Dual Edge Modulation for Fast Initial Response to (PbFree) & Reel Transient Loading For information on tape and reel specifications, including part orientation and tape sizes, please Dual High Performance Operational Error Amplifier refer to our Tape and Reel Packaging Specification One Digital Soft Start Ramp for Both Rails Brochure, BRD8011/D. Dynamic Reference Injection Accurate Total Summing Current Amplifier DAC with Droop Feedforward Injection Dual High Impedance Differential Voltage and Total Power Saving Phase Shedding Current Sense Amplifiers Vin Feed Forward Ramp Slope PhasetoPhase Dynamic Current Balancing Over Voltage Protection (OVP) & Under Voltage Lossless DCR Current Sensing for Current Balancing Protection (UVP) Summed Compensated Inductor Current Sensing for Over Current Protection (OCP) Droop Dual Power Good Output with Internal Delays True Differential Current Balancing Sense Amplifiers Pbfree and Halidefree Packages are Available for Each Phase Applications Adaptive Voltage Positioning (AVP) IMVP8 Desktop Switching Frequency Range of 180 KHz 1.17 MHz Gaming Startup into PreCharged Loads while Avoiding False OVP Semiconductor Components Industries, LLC, 2018 1 Publication Order Number: March, 2019 Rev. 0 NCP81247/DNCP81247 Vin VccCore Driver Vin Driver Vin Driver Vin Driver NCP81247 Intel IMVP8 CPU Vin VccGT Driver Vin Driver SVID Figure 1. Block Diagram www.onsemi.com 2