DATASHEET ISL68127 FN8748 Rev.2.00 Digital Dual Output, 7-Phase Configurable, PWM Controller with PMBus Jul 12, 2019 The ISL68127 is a digital dual output, flexible multiphase Features (X+Y 7) PWM controller supporting the latest PMBus V1.3 Advanced linear digital modulation scheme specifications. The ISL68127can be configured to support any desired phase assignments up to a maximum of seven phases - Zero latency synthetic current control for excellent HF across the two outputs (X+Y). For example, 6+1, 5+2, 4+2, current balance 3+3, 3+2, or even a single output operation as a 7+0 - Dual edge modulation for fastest transient response configuration are supported. The ISL68127 uses the Renesas Auto phase add/drop for excellent load vs efficiency profile proprietary linear synthetic digital current modulation scheme to achieve the industrys best combination of transient PMBus V1.3 support response and ease of tuning while addressing the challenges - Telemetry: V , V , I , power IN/OUT, temperature, IN OUT OUT of modern multiphase designs. and various fault status registers - Up to 1MHz bus interface You can configure the device and monitor telemetry using the intuitive Renesas PowerNavigator GUI. The ISL68127 device Flexible phase configuration supports on-chip nonvolatile memory to store various - 7+0, 6+1, 5+2, and 4+3 phase operation configuration settings that are user-selectable through - Operation using fewer than seven phases between two pin-strap, giving system designers increased power density to outputs is also supported configure and deploy multiple configurations. The automatic phase add/drop feature allows maximum efficiency across all Diode braking for overshoot reduction load ranges. Thresholds for automatic phase add/drop are Differential remote voltage sensing supports 0.5% closed user-programmable using PowerNavigator. loop system accuracy over load, line, and temperature The ISL68127 supports a comprehensive fault management Highly accurate current sensing for excellent load line system to enable the design of highly reliable systems. From a regulation and accurate OCP multitiered overcurrent protection scheme to the configurable - Supports the ISL99227 60A smart power stage power-good and output overvoltage/undervoltage fault - Supports DCR sense with integrated temperature thresholds and temperature monitoring, almost any need is compensation accommodated. Comprehensive fault management enables high reliability With minimal external components, easy configuration, robust systems fault management, and highly accurate regulation capability, implementing a high-performance, multiphase regulator has - Pulse-by-pulse phase current limiting never been easier. - Total output current protection - Output and input OV/UV Applications - Open voltage sense detect Networking equipment - Black box recording capability for faults Telecom and datacom equipment Intuitive configuration using PowerNavigator Server and storage equipment - NVM to store up to eight configurations Point-of-load power supply (Memory, DSP, ASIC, FPGA) Pb-free (RoHS compliant) Related Literature For a full list of related documents, visit our web page: ISL68127 product page FN8748 Rev.2.00 Page 1 of 48 Jul 12, 2019ISL68127 Table of Contents Ordering Information 3 Pin Configuration 3 Functional Pin Descriptions . 4 Driver, DrMOS, and Smart Power Stage Recommendations 4 Internal Block Diagram . 5 Typical Application: 6+1 Configuration with ISL99227 SPS 6 Typical Application: 4+3 Configuration with ISL99227 SPS 7 Typical Application: 5+2 Configuration with DCR Sensing . 8 Typical Application: Phase Doubler 14-Phase VR with ISL6617A+SPS . 9 Absolute Maximum Ratings 10 Thermal Information 10 Recommended Operating Conditions . 10 Electrical Specifications 10 Typical Performance Curves . 12 Functional Description 12 Overview . 12 PWM Modulation Scheme 12 PMBus Address Selection . 12 Phase Configuration . 12 Automatic Phase Add and Drop . 13 Output Voltage Configuration 13 Switching Frequency . 13 Current Sensing . 13 Temperature Sensing 15 Temperature Compensation 15 Lossless Input Current and Power Sensing 16 Voltage Regulation 16 Current Feedback . 16 Power-On Reset (POR) . 16 Soft-Start Delay and Ramp Times 16 Stored Configuration Selection 16 Fault Monitoring and Protection 17 Power-Good Signals 17 Output Voltage Protection 17 Output Current Protection . 17 Smart Power Stage OC Fault Detect 18 Thermal Monitoring and Protection . 18 Layout and Design Considerations 19 PMBus Operation . 20 PMBus Protocol 21 PMBus Command Summary 22 PMBus Use Guidelines . 23 PMBus Data Formats 23 PMBus Command Detail . 24 Revision History 46 Package Outline Drawing 47 FN8748 Rev.2.00 Page 2 of 48 Jul 12, 2019