LOAD DATASHEET Precision Digital Power Monitor ISL28022 Features The ISL28022 is a bidirectional high-side and low-side digital Bus voltage sense range 0V to 60V current sense and voltage monitor with serial interface. The 16-bit ADC monitors current and voltage device monitors current and voltage and provides the results Voltage measuring error . <0.3% digitally along with calculated power. The ISL28022 provides tight accuracy of less than 0.3% for both voltage and current Current measuring error . <0.3% monitoring over the entire input range. The digital power Handles negative system voltage monitor has configurable fault thresholds and measurable Overvoltage/undervoltage and current fault monitoring ADC gain ranges. 2 I C/SMBus interface The ISL28022 handles common-mode input voltage ranging from 0V to 60V. The wide range permits the device to handle Wide V range 3V to 5.5V CC telecom, automotive and industrial applications with minimal ESD (HBM) . 8kV external circuitry. Both high- and low-side ground sensing 2 Supports high speed I C . 3.4MHz applications are easily handled with the flexible architecture. The ISL28022 consumes an average current of just 700A and is Applications available in a 10 Ld MSOP package. The ISL28022 is also offered Routers and servers in a space saving 16 Ld QFN package. The part operates across DC/DC, AC/DC converters the extended temperature range from -40C to +125C. Battery management/charging Related Literature Automotive power AN1955, Design Ideas for Intersil Digital Power Monitors Power distribution AN1875, ISL28022 Digital Power Monitor Evaluation Kit Medical and test equipment (ISL28022EVKIT1Z) AN1811, ISL28022 Digital Power Monitor 8 Site Evaluation Kit VCC V = 0V TO 60V IN VBUS VINP GND ADC R SH SW 16-BIT MUX VINM SMBCLK/SCL 2 I C TO C SMBUS SMBDAT/SDA VOUT VOLTAGE REGULATOR REG V CC MAP A0 EN A1 ECLK/INT FIGURE 1. TYPICAL APPLICATION February 4, 2016 CAUTION: These devices are sensitive to electrostatic discharge follow proper IC Handling Procedures. 1 1-888-INTERSIL or 1-888-468-3774 Copyright Intersil Americas LLC 2013-2016. All Rights Reserved FN8386.8 Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries. All other trademarks mentioned are the property of their respective owners.ISL28022 Table of Contents Block Diagram 3 Ordering Information 3 Pin Configurations . 4 Pin Descriptions . 4 Absolute Maximum Ratings . 6 Thermal Information . 6 Recommended Operating Conditions 6 Electrical Specifications . 6 Typical Performance Curves 9 Functional Description 13 Overview . 13 Detailed Description . 13 Functional Pin Descriptions . 13 Register Descriptions 14 Serial Interface 19 Protocol Conventions 19 SMBus Support . 19 Device Addressing . 21 Write Operation . 22 Read Operation . 22 Broadcast Addressing 22 2 C Clock Speed . 22 I Signal Integrity . 23 Measurement Stability vs Acquisition Time 23 Fast Transients 23 External Clock . 24 Over-Ranging . 24 Shunt Resistor Selection 24 Lossless Current Sensing (DCR) 26 Layout . 26 A Trace as a Sense Resistor . 28 Revision History 30 About Intersil 30 Package Outline Drawing 31 M10.118 . 31 L16.3x3B 32 Submit Document Feedback FN8386.8 2 February 4, 2016