DATASHEET ISL8280M R16DS0012EU0200 Rev.2.00 10A High Efficiency Hybrid Digital Step-Down Power Module Feb 15, 2019 The ISL8280M is a PMBus enabled DC/DC single Features channel step-down power supply featuring the Proprietary Renesas R4 Technology proprietary Renesas R4 Technology. The module Linear control loop for optimal transient response supports a wide 4.5V to 16.5V input voltage range and a wide 0.5V to 5V output range capable of delivering up to Variable frequency and duty cycle control during 10A of continuous current. The ISL8280M achieves up load transient for fastest possible response to 95% conversion efficiency and is optimized for high Inherent voltage feed-forward for wide range power density. Integrated LDOs provide module bias input voltage allowing for single supply operation. The 2 ISL8280M includes a SMBus/PMBus/I C interface for Input voltage range: 4.5V to 16.5V device configuration, telemetry (V , V , I , and IN OUT OUT Output voltage range: 0.5V to 5V temperature), and fault reporting. 1.5% load/line/temperature regulation with remote The proprietary Renesas R4 control scheme has extremely sense fast transient performance, accurately regulated Supports all ceramic solutions frequency control, and all internal compensation. An efficiency enhancing PFM mode greatly improves Integrated LDOs for single input rail solution light-load efficiency. The ISL8280Ms serial bus allows 2 SMBus/PMBus/I C compatible up to 1.25MHz for easy R4 loop optimization that results in fast transient performance across a wide range of applications 256 boot-up voltage levels with a configuration pin including all ceramic output filters. Seven switching frequency options from 300kHz to The ISL8280M has four 8-bit configuration pins that 1MHz provide very flexible configuration options (such as PFM operation option for improved light-load frequency, V , and AV gain) without the need for OUT efficiency built-in NVM memory. As a result, the design flow Startup into precharged load closely matches traditional analog modules while still offering the design flexibility and feature set of a digital Power-good monitor for soft-start and fault detection 2 SMBus/PMBus/I C interface. The ISL8280M features Comprehensive fault protection for high system remote voltage sensing, completely eliminates any reliability potential difference between remote and local ground, and improves regulation and protection accuracy. A Over-temperature protection precision enable input coordinates the startup of the Output overcurrent and short-circuit protection ISL8280M with other voltage rails and is especially useful for power sequencing. Output overvoltage and undervoltage protection The ISL8280M integrates all power and most passive Open remote sense protection components to minimize the external components and Input UVLO and power sequence, fault reset significantly reduce design complexity and board space. Compatible with Renesas PowerNavigator The ISL8280M is available in a low-profile, thermally software enhanced, compact 12mmx11mmx5.3mm fully encapsulated HDA package. Thermally enhanced 12mmx11mmx5.3mm HDA package Applications Servers, telecom, storage, and datacom Related Literature For a full list of related documents, visit our website: Industrial/ATE and networking equipment ISL8280M device page Graphics cards General purpose power for ASIC, FPGA, DSP, and memory R16DS0012EU0200 Rev.2.00 Page 1 of 51 Feb 15, 2019ISL8280M Contents 1. Overview . 4 1.1 Typical Application Circuit . 4 1.2 Block Diagram 5 1.3 Ordering Information . 5 1.4 Pin Configuration 7 1.5 Functional Pin Descriptions 8 2. Specifications 11 2.1 Absolute Maximum Ratings . 11 2.2 Thermal Information . 11 2.3 Recommended Operating Conditions . 12 2.4 Electrical Specifications 12 3. Typical Performance Curves 16 3.1 Efficiency Performance 16 3.2 Output Voltage Ripple . 17 3.3 Load Transient Response Performance . 19 3.4 Startup and Shutdown . 20 3.5 Derating Curves 21 4. Functional Description 23 4.1 Configuring Internal Bias and LDO . 23 4.2 Enabling and Disabling the ISL8280M . 23 4.3 Programming the Resistor Reader . 24 4.4 Soft-Starting . 27 4.5 Boot-Up Voltage Programming 28 4.6 Thermal Monitoring and Compensation 35 4.7 Fault Protection 36 4.8 PGOOD Monitor . 38 4.9 PFM Mode Operation . 38 2 4.10 SMBus, PMBus, and I C Operation . 38 5. Layout Guidelines 45 6. Thermal Considerations . 46 R16DS0012EU0200 Rev.2.00 Page 2 of 51 Feb 15, 2019