Overview
Description
The ISL28023 is a bidirectional high-side and low-side digital current sense and voltage monitor with a serial interface. The device monitors power supply current, voltage and provides the digital results along with calculated power. The ISL28023 provides tight accuracy of 0.05% for both voltage and current monitoring. The auxiliary input provides an additional power monitor function.
The VCC power can either be externally supplied or internally regulated, which allows the ISL28023 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 enables a DC/DC converter output voltage margining. Fault indication includes a Bus Voltage window and overcurrent fast fault logic indication.
The ISL28023 serial interface is PMBus compatible and operates down to 1.2V voltage. It draws an average current of just 800µA and is available in the space saving 24 Ld QFN 4mmx4mm package. The part operates across the full industrial temperature range from -40°C to +125°C.
Features
- Bus voltage sense range: 0V to 60V
- Voltage gain error: 0.05%
- Current gain error: 0.05%
- Internal temperature sensor accuracy: +1.0°C
- High or low (RTN) side sensing
- Bidirectional current sensing
- Auxiliary low voltage channel
- ∆∑ADC, 16-bit native resolution
- Programmable averaging modes
- Internal 3.3V regulator
- Internal temperature sense
- Overvoltage/undervoltage and current fault monitoring with 500ns detection delay
- 8-bit voltage output DAC
- I2C/SMBus/PMBus interface that handles 1.2V supply
Comparison
Applications
Design & Development
Software & Tools
Boards & Kits
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on the CAD Model links in the Product Options table. If a symbol or model isn't available, it can be requested directly from SamacSys.
Support
Support Communities
Get quick technical support online from Renesas Engineering Community technical staff.
Support Communities
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I2C: Using SSP with Renesas ISL28022 power monitor
We are trying to measure power draw using the Renesas/Intersil ISL28022 via I2C communication. Using SSP 1.3.2 (locked in for now) on S5D9.The protocol is fairly simple: write 2 bytes of configuration data, then issue read to receive 2 bytes of measured data. These are ...
Sep 6, 2019 -
I2C not ACK using S128 as slave device
Hi, I'm setting my custom board using S128 MCU as an SMBUS slave device. I'm having trouble with the SDA not acknowledge when the master sending a request. Please share your advise. Thanks.
Nov 17, 2018 -
AE Cloud1 Kit I2C Reading Slave gives no Data (0xFF)
I am using an AE Cloud Kit to communicate to a slave device using the RIIC I2C Framework. Using a logic analyzer I can confirm that my device address is correct, and the R/W and ACK bit are correct when reading and writing. The issue is when reading ...
Sep 18, 2018
FAQs
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Temperature Sensor Diode for ISL28023
Either the popular 1N4148 or similar silicon diodes.
May 21, 2024