MP2953B Digital Multi-Phase Controller with PMBus Interface for VR12.5 The Future of Analog IC Technology DESCRIPTION FEATURES The MP2953B is a digital multi-phase controller 6-Phase Digital PWM Controller that provides power for the core of the INTEL Intels VR12.5 Compliant VR12.5 platform. It works with MPS Intelli- PMBus Compliant Phase products to complete the multi-phase VR Serial VID Interface for Programming and solution with minimal external components. It Monitoring can be configured for 1 ~ 6 phase operation. Pin Programmable SVID registers Built-In EEPROM to Store Custom The MP2953B provides on-chip EEPROM to Configurations store and restore device configurations. Device Automatic Loop Compensation configurations and fault parameters are easy to program or monitor using the PMBus interface. Less External Components than The MP2953B monitors and reports the output Conventional Analog Controllers current through CS output from Intelli-Phase Phase-Shedding at Light Load to Provide products. High Efficiency Phase-to-Phase Active Current Balancing The MP2953B is based on a unique digital Input and Output Voltage, Current, and multi-phase, non-linear control to provide fast Power Monitoring transient response to load transient with Regulator Temperature Monitoring minimal output capacitors. With only one power Open-Drain FAULT Signal for Fault loop control method for both steady state and Notification load transient, the power loop compensation is RVP/OVP/UVP/OCP/OTP/UVLO Protection easily configured. with Options of No Action, Latch, Retry, or Hiccup Adjustable Load-Line Regulation RoHS Compliant 5mmx5mm QFN-40 APPLICATIONS Server Core Voltage Graphic Card Core Regulators Telecom and Networking Systems Base Stations All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive. For MPS green status, please visit the MPS website under Quality Assurance. MPS, the MPS logo, and Simple, Easy Solutions are trademarks of Monolithic Power Systems, Inc. or its subsidiaries. MP2953B Rev. 1.02 www.MonolithicPower.com 1 11/11/2019 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2019 MPS. All Rights Reserved. LOAD MP2953B DIGITAL PWM CONTROLLER WITH PMBUS FOR VR12.5 TYPICAL APPLICATION VIN=12V +5V VDD VIN PMBus EN BST KIT PWM Intelli- CS VOUT SW TEMPPhase VTT = 1.05V VDD33 SYNC AGND PGND CPU SCLK SCLK SDIO SDIO PGND VORTN ALERT ALT VRRDY VRRDY VOSEN VDD VIN PROCHOT VRHOT FB EN BST EN EN PWM VDIFF Intelli- VRFLT MP2953B CS CS1 IREF SW 6- Phase VR12.5 TEMPPhase CS2 SYNC IMON Digital Controller CS3 AGND PGND VDD33 CS4 VFS CS5 CS6 ADDR S ADDR P VBOOT CS SUM VDD VIN EN BST PWM Intelli- CS SW TEMPPhase SYNC AGND PGND VDD VIN EN BST PWM Intelli- CS SW TEMPPhase SYNC AGND PGND VDD VIN EN BST PWM Intelli- CS TEMP SW Phase SYNC AGND PGND VDD VIN EN BST PWM Intelli- CS TEMP SW Phase SYNC AGND PGND Figure a: 6 Phase application MP2953B Rev. 1.02 www.MonolithicPower.com 2 11/11/2019 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2019 MPS. All Rights Reserved. CCM ALT P TEMP SDA P PWM6 SCL P PWM5 VDD33 PWM4 VDDHC18 PWM3 DGND PWM2 VDD50 PWM1 AGND VINSEN