DATASHEET ISL68201 FN8696 Rev.5.00 2 Single-Phase R4 Digital Hybrid PWM Controller with PMBus/SMBus/I C and PFM Jul 12, 2018 The ISL68201 is a single-phase, synchronous buck PWM Features controller featuring the Renesas proprietary R4 Technology. Renesas proprietary R4 Technology It supports a wide 4.5V to 24V input voltage range and a wide 0.5V to 5.5V output range. Integrated LDOs provide controller - Linear control loop for optimal transient response bias voltage, allowing for single supply operation. The - Variable frequency and duty cycle control during load 2 ISL68201 includes a PMBus/SMBus/I C interface for device transient for fastest possible response configuration and telemetry (V , V , I , and temperature) IN OUT OUT - Inherent voltage feed-forward for wide range input and fault reporting. Input voltage range: 4.5V to 24V The Renesas proprietary R4 control scheme has extremely fast Output voltage range: 0.5V to 5.5V transient performance, accurately regulated frequency control, and all internal compensation. An efficiency enhancing PFM 0.5% DAC accuracy with remote sense mode can be enabled to greatly improve light-load efficiency. Support all ceramic solutions The ISL68201s serial bus allows for easy R4 loop Integrated LDOs for single input rail solution optimization, resulting in fast transient performance over a 2 wide range of applications, including all ceramic output filters. SMBus/PMBus/I C compatible, up to 1.25MHz The ISL68201 has four 8-bit configuration pins, which provide 256 boot-up voltage levels with a configuration pin very flexible configuration options (frequency, V , R4 gain, OUT Eight switching frequency options from 300kHz to 1.5MHz etc.) without the need for built-in NVM memory. This results in PFM operation option, compatible with ISL99140 for a design flow that closely matches traditional analog improved light-load efficiency controllers, while still offering the design flexibility and feature 2 Start-up into precharged load set of a digital PMBus/SMBus/I C interface. The ISL68201 also features remote voltage sensing and completely eliminates Precision enable input to set higher input UVLO and power any potential difference between remote and local grounds. This sequence as well as fault reset improves regulation and protection accuracy. A precision enable Power-good monitor for soft-start and fault detection input is available to coordinate the start-up of the ISL68201 with other voltage rails, especially useful for power sequencing. Comprehensive fault protection for high system reliability - Over-temperature protection Applications - Output overcurrent and short-circuit protection High efficiency and high density POL digital power - Output overvoltage and undervoltage protection FPGA, ASIC, and memory supplies - Open remote sense protection Data center: servers, storage systems Compatible with 5V or 3.3V PWM input DrMOS or Smart Power Stage (SPS) Wired infrastructure: routers, switches, and optical networking Compatible with PowerNavigator software Wireless infrastructure: base stations Related Literature For a full list of related documents, visit our website ISL68201 product page TABLE 1. SINGLE-PHASE R4 DIGITAL HYBRID PWM CONTROLLER OPTIONS 2 PART INTEGRATED PWM PMBus/SMBus/I C NUMBER DRIVER OUTPUT INTERFACE COMPATIBLE DEVICES ISL68200 Yes No Yes Discrete MOSFETs or Dual Channel MOSFETs ISL68201 No Yes Yes Renesas Power Stages: ISL99140, ISL99227, ISL99125B, ISL99135B Renesas Drivers: ISL6596, ISL6609, ISL6627, ISL6622, ISL6208 FN8696 Rev.5.00 Page 1 of 33 Jul 12, 2018ISL68201 Table of Contents Typical Applications Circuits 3 Block Diagram 4 Ordering Information 5 Pin Configuration 5 Functional Pin Descriptions . 5 Absolute Maximum Ratings . 7 Thermal Information . 7 Recommended Operating Conditions 7 Electrical Specifications . 7 Operation . 10 IC Supplies . 10 Enable and Disable 10 Resistor Reader . 10 Soft-Start . 12 Boot-Up Voltage Programming 12 Current Sensing . 16 Thermal Monitoring and Compensation . 18 I Calibration . 19 OUT Fault Protection . 20 PGOOD Monitor . 21 PFM Mode Operation . 21 2 SMBus, PMBus, and I C Operation . 21 R4 Modulator . 26 General Application Design Guide 28 Output Filter Design 28 Input Capacitor Selection . 28 Design and Layout Considerations . 29 Voltage Regulator Design Materials 30 Revision History 31 Package Outline Drawing 32 FN8696 Rev.5.00 Page 2 of 33 Jul 12, 2018