Datasheet ISL68221 Digital Triple Output, 3-Phase PWM Controller The ISL68221 is a digital triple output multiphase Features (X+Y+Z 3) PWM controller with PMBus V 1.3 Advanced linear digital modulation scheme compatibility. The controller can be configured to Auto phase add/drop with PFM mode for support any desired phase assignments up to a excellent load vs efficiency profile maximum of three phases across the three outputs (X, Y, and Z). For example, 1+1+1, 1+1+0, or even Dual edge modulation with optional diode braking single output operation as a 3+0 configuration is for faster transient response supported. When combined with the Renesas family Excellent DVID performance of Smart Power Stages and DrMOS devices, designs of exceptional density and performance can be Zero latency synthetic current control for excellent created. high frequency current balance The ISL68221 uses the Renesas proprietary digital Flexible phase assignment from 0 to 3 phases per synthetic current modulation scheme to achieve the output industry-best combination of transient response, ease Up to 2MHz switching frequency operation for high of tuning, and efficiency across the full load range. density designs Diode emulation and automatic phase add/drop Differential remote voltage sensing supports 0.5% features allow you to extract maximum efficiency from closed-loop system accuracy over load, line, and the converter regardless of load conditions. You can temperature use the intuitive Renesas PowerNavigator software to configure and monitor the device. Highly accurate current sensing for excellent load-line regulation and accurate OCP With minimal external components, easy configuration, robust fault management, and highly Supports the full range of the Renesas smart accurate regulation capability, implementing a power stage devices high-performance, multiphase regulator has never Comprehensive fault management enables high been easier. reliability systems Applications Pulse-by-pulse (per phase) and total output current limiting Artificial intelligence/accelerator cards (FPGA, Black Box status recording capability with first ASIC) fault indicator Network equipment Intuitive configuration using PowerNavigator Server/storage equipment SMBus/PMBus V1.3 compatible Telecom/datacom equipment Up to 16 user configurations stored in device Point-of-load power supply (memory, DSP, ASIC, Non-Volatile Memory (NVM) FPGA) Related Literature For a full list of related documents, visit our website: ISL68221 device page FN9331 Rev.1.00 Page 1 of 97 Oct.1.20ISL68221 Contents 1. Overview . 6 1.1 Typical Application . 6 1.2 Internal Block Diagram . 7 1.3 Ordering Information . 8 1.4 Pin Configuration 9 1.5 Functional Pin Descriptions . 10 2. Specifications 11 2.1 Absolute Maximum Ratings . 11 2.2 Thermal Information . 11 2.3 Recommended Operating Conditions . 11 2.4 Electrical Specifications 12 3. Initializing the Device . 14 3.1 Power-On Reset (POR) 14 3.2 Selecting the PMBus Address . 15 3.3 Selecting the User Configurations 15 3.4 Configuring the Device 16 4. Operating the Device 17 4.1 Input Voltage Sensing . 17 4.2 Lossless Input Current and Power Sensing . 17 4.3 VMON Voltage Sensing 17 4.4 Enabling and Soft-Starting the Device . 18 4.5 Disabling the Device 18 4.6 Phase Configuration and Automatic Phase Dropping . 18 4.7 Diode Emulation and PFM Operation . 19 4.8 Diode Braking . 19 4.9 Switching Frequency 20 5. Temperature Sensing . 23 5.1 SPS Temperature Sensing 23 5.2 NTC Temperature Sensing . 23 5.3 Temperature Compensation 24 6. Fault Monitoring and Protection . 25 6.1 Power-Good Signals 25 6.2 Overvoltage/Undervoltage Protection . 25 6.3 Output Overcurrent Protection . 26 6.4 Smart Power Stage OC Fault Detect 27 6.5 Thermal Protection and nVRHOT 27 6.6 Catastrophic Failure Protection 27 6.7 Black Box Recorder . 28 7. Layout and Design Considerations 29 7.1 Pin Noise Sensitivity, Design, and Layout Consideration 29 FN9331 Rev.1.00 Page 2 of 97 Oct.1.20