18mm DATASHEET ISL8272M FN8670 Rev.5.00 50A Digital DC/DC PMBus Power Module Nov 8, 2017 The ISL8272M is a 50A step-down PMBus compliant digital Features power module. Integrated in the module is a high performance Complete digital switch mode power supply digital PWM controller, dual-phase power MOSFETs, inductors, and the passives. This high efficiency power module is capable Wide input voltage range: 4.5V to 14V of delivering 50A without the need for airflow and heatsinks. Programmable output voltage range: 0.6V to 5V The ISL8272M can be placed in a current sharing PMBus compliant communication interface configuration with up to four modules in parallel to deliver 200A continuous current. Programmable V , margining, UV/OV, UC/OC, UT/OT, OUT soft-start/stop, sequencing and external synchronization The ISL8272M operates with the ChargeMode control architecture, which responds to a transient load within a single Monitor of V , V , I , temperature, duty cycle, switching IN OUT OUT switching cycle. The ISL8272M comes with operating in a pin frequency, power-good, and faults strap mode output voltage, switching frequency device, SMBus Fast response ChargeMode control architecture address, input UVLO, soft-start/stop, and current sharing can be Multiphase current sharing with up to four modules programmed through external resistors. More configuration such as fault limits, fault response, margining, and sequencing can be 1.0% V accuracy over line, load, and temperature OUT easily programmed using the PMBus interface. PMBus can be Internal nonvolatile memory and fault logging used to monitor voltages, currents, temperatures, and fault Thermally enhanced HDA package status. The ISL8272M is supported by the PowerNavigator software, a graphical user interface (GUI) that can be used to Applications configure modules to a desired solution. Server, telecom, storage, and datacom The ISL8272M is built in a compact (18mmx23mmx7.5mm) and low profile overmolded HDA package, suitable for Industrial/ATE and networking equipment automated assembly by standard surface mount equipment. General purpose power for ASIC, FPGA, DSP, and memory Related Literature For a full list of related documents, visit our website - ISL8272M product page VIN VIN VOUT CIN VOUT VDD VSENP ENABLE COUT EN VSENN VR5 10F 10F VR6 VR VR55 ISL8272M VDRV VCC 7.5mm SCL VDRV1 100k PMBUS SDA 2x10F INTERFACE SALRT VMON 6.65k SGND PGND NOTE: 1. Figure 1 represents a typical implementation of the ISL8272M. For PMBus operation, it is recommended to tie the enable pin (EN) to SGND. FIGURE 1. 50A APPLICATION CIRCUIT FIGURE 2. A SMALL PACKAGE FOR HIGH POWER DENSITY FN8670 Rev.5.00 Page 1 of 59 Nov 8, 2017 23mmISL8272M Table of Contents Ordering Information 3 Pin Configuration 4 Pin Descriptions . 4 ISL8272M Internal Block Diagram . 6 Typical Application Circuit - Single Module 7 Typical Application Circuit - Three Module Current Sharing 8 Absolute Maximum Ratings 10 Thermal Information 10 Recommended Operating Conditions . 10 Electrical Specifications 10 Typical Performance Curves . 13 Efficiency Performance . 13 Transient Response Performance 14 Derating Curves 15 Functional Description 17 SMBus Communications 17 Output Voltage Selection . 17 Soft-Start/Stop Delay and Ramp Times . 17 Power-Good 18 Switching Frequency and PLL . 18 Loop Compensation . 19 Input Undervoltage Lockout (UVLO) . 19 SMBus Module Address Selection 19 Output Overvoltage Protection . 20 Output Prebias Protection 20 Output Overcurrent Protection . 20 Thermal Overload Protection 21 Digital-DC Bus 21 Active Current Sharing . 21 Phase Spreading 22 Fault Spreading . 22 Output Sequencing 23 Monitoring with SMBus . 23 Snapshot Parameter Capture . 23 Nonvolatile Memory . 23 Layout Guide . 23 Thermal Considerations . 24 Package Description . 24 PCB Layout Pattern Design . 24 Thermal Vias 24 Stencil Pattern Design . 24 Reflow Parameters 24 PMBus Command Summary 25 PMBus Data Formats 28 PMBus Use Guidelines 29 Summary 29 PMBus Commands Description . 29 Firmware Revision History . 51 Revision History 51 About Intersil 52 Package Outline Drawing 53 FN8670 Rev.5.00 Page 2 of 59 Nov 8, 2017