ISL28025

Precision Digital Power Monitor with Real Time Alerts

OVERVIEW

The ISL28025 is a bidirectional high-side and low-side digital current sense and voltage monitor with a serial interface. The device monitors power supply current and voltage, which provides the digital results along with calculated power. The ISL28025 provides tight accuracy of less than 0.1% for both voltage and current monitoring.

The VCC power can either be externally supplied or internally regulated, which allows the ISL28025 to handle a common-mode input voltage range from 0V to 60V. The wide range permits the device to handle telecom, automotive and industrial applications with minimal external circuitry.

An 8-bit voltage DAC enable DC/DC converter output voltage margining (20 Pin QFN) Fault indication includes Bus Voltage window and over-current fast fault logic indication. The ISL28025 includes an integrated temperature sensor for monitoring.

The ISL28025 serial interface is PMBus compatible and operates down to 1.2V. It draws an average current of just 1.3mA and is available in the space saving 16 ball WLCSP package. It is also available in a 20 lead QFN 4x4 (1.85SQmm EPAD) The parts operate across the full industrial temperature range from -40°C to +125°C.

KEY FEATURES

  • Bus voltage sense range: 0V to 60V
  • Voltage gain error: 0.05%
  • Current gain error: 0.05%
  • High or low (RTN) side sensing
  • Bidirectional current sensing
  • Auxiliary low voltage input channel
  • ΔΣADC, 16-bit native resolution
  • Programmable averaging modes
  • Internal 3.3V regulator
  • Internal temperature sense
  • Over-voltage/undervoltage and current fault monitoring with 500ns detection delay
  • 8-bit voltage output DAC (20 Pin QFN)
  • I2C/SMBus/PMBus interface that handles 1.2V supply
  • 55 I2C slave addresses

BLOCK DIAGRAM

 Block Diagram

PARAMETRICS

Parameters
ISL28025
Basic Information
Production Status
Mass Production
VS (min)
3.0 V
VS (max)
5.5 V
IS (per amp)
1 mA
PSRR (dB)
127
Output
I2C
Gain Error/Measurement Error Max
0.25
Max Offset Voltage
50 µV
CMRR (dB)
134
Common Mode Input Range (min)
0 V
Common Mode Input Range (max)
12V or 60V
Qualification Level
Standard
Can Sample
YES
Temperature Range
-40 to +125

Design Resources and Tools

Design Tool

 PowerNavigator Software

Configure and monitor digital-DC devices. Easily change features and functions of your power supply design with a simple GUI.

Design

2:16
Learn how to use the ISL28025 digital power monitor to monitor input current of the digital point of load regulator using PowerNavigator.
2:16
Learn how to use the ISL28025 digital power monitor to monitor input current of the digital point of load regulator using PowerNavigator.
2:16
Learn how to use the ISL28025 digital power monitor to monitor input current of the digital point of load regulator using PowerNavigator.

Evaluation Tools

ISL2802xEVKIT1Z Digital Power Monitor Eval Kits

Evaluation Kit

ISL2802xEVKIT1Z

The ISL2802xEVKIT1Z digital power monitor evaluation kits demonstrate the high accuracy and wide voltage range of ISL28022, ISL28023, ISL28025.

ISL2802xEVKIT1Z Evaluation Kit Video Series

5:17
This video explains how to get your own ISL28022 digital power monitor evaluation kit, download software, and connect the RLoad board.
9:03
Learn how to connect the ISL28022 evaluation board to the dongle board and begin using your monitoring software.
5:17
This video explains how to get your own ISL28022 digital power monitor evaluation kit, download software, and connect the RLoad board.
9:03
Learn how to connect the ISL28022 evaluation board to the dongle board and begin using your monitoring software.
5:17
This video explains how to get your own ISL28022 digital power monitor evaluation kit, download software, and connect the RLoad board.
9:03
Learn how to connect the ISL28022 evaluation board to the dongle board and begin using your monitoring software.

ISL28022EV1Z
Digital Power Monitor 8 Site Evaluation Kit

Evaluation Kit

ISL28022EV1Z

The ISL28022EV1Z eval board has 8 sites and a microcontroller that is responsible for the data transaction and config for each ISL28022 DPM.

ISL28022EV1Z Evaluation Kit Video Series

7:19
Get a brief tour of the ISL28022 eight site evaluation platform, download the software and start using the kit.
2:27
This video demonstrates how a simple resistor divider can be used to measure current and power with the ISL28022 digital power monitor.
4:56
This video demonstrates how to save your performance data using the ISL28022 digital power monitor.
7:19
Get a brief tour of the ISL28022 eight site evaluation platform, download the software and start using the kit.
2:27
This video demonstrates how a simple resistor divider can be used to measure current and power with the ISL28022 digital power monitor.
4:56
This video demonstrates how to save your performance data using the ISL28022 digital power monitor.
7:19
Get a brief tour of the ISL28022 eight site evaluation platform, download the software and start using the kit.
2:27
This video demonstrates how a simple resistor divider can be used to measure current and power with the ISL28022 digital power monitor.
4:56
This video demonstrates how to save your performance data using the ISL28022 digital power monitor.

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