MAX22915

RECOMMENDED FOR NEW DESIGNS

Industrial Octal High-Side Switch with Advanced Diagnostics

Industrial High-Side Switch with Diagnostics, Output Monitoring and Enhanced EMC Performance

Data Sheet (Rev. 0) Product Selection Table
Viewing:

Overview

  • Robustness with Extensive Diagnostics
    • 7-bit ADC to Monitor Chip Temperature, Per-Channel Output Current or VDD Supply Voltage
    • Per-Channel Open-Wire Detection with Switches On, Off, or Toggling at up to 131Hz
    • Per-Channel Overload, Overcurrent and Short-to-VDD Fault Detection
    • CRC Error Checking on SPI Interface
    • Watchdog Timer on SPI and SYNCH Pin
    • Thermal Shutdown Protection and Adjustable Thermal Warning Reporting
    • 65V Absolute Maximum Supply Range
    • Internal Clamps for Fast Inductive Load Demagnetization
    • UVLO Warning on Supply Voltages
    • Loss of VDD or GND Protection
    • Integrated IEC 61000-4-2 ESD Protection at ±8kV Contact and ±15kV Air-Gap
    • Integrated IEC 61000-4-5 Surge Protection at ±1kV/42Ω Using Single TVS on VDD
    • Enhanced EFT and RF Conducted Immunity on Per-Channel Diagnostics with Switches On, Off, or Toggling at up to 131Hz
    • −40°C to +125°C Operating Temperature Range
  • Reduced Power and Heat Dissipation
    • Active Current Limiting at 1A (typ), 1.3A (max)
    • 5mA (typ) Supply Current
    • 250mΩ (max) On-Resistance at +125°C
  • Flexibility and Space Saving
    • Selectable VM_ Supply Voltage Monitoring
    • Selectable Open-Wire Detection Thresholds
    • Selectable Output Current Measurement Full-Scale Range
    • SYNCH Input for Simultaneous Update of OUT_
    • LED Driver Matrix for 16 Fault and Status LEDs, powered by 24V, 5V, or 3.3V
    • Flexible Logic Supply Voltage from 2.5V to 5.5V
    • Addressable SPI Reduces Isolation Cost
    • Compact 6mm × 7mm FCQFN Package

The MAX22915 is an industrial output device with eight high-side switches. Each channel is specified to handle up to 1A (typ) of continuous current with an on-resistance of 120mΩ (typ) and 250mΩ (max) at 125°C.

The MAX22915 has a built-in 7-bit ADC to monitor chip temperature, per-channel output current or VDD supply voltage. It supports continuous or on-demand monitoring, with option to average multiple ADC conversions. The MAX22915 provides flexible configurations and global diagnostics, which include undervoltage warnings, thermal condition reportings, and communication errors.

Each channel is equipped with overload, overcurrent and short-to-VDD detections, as well as open-wire detection that can detect an open-wire fault condition when switch is on, off, or toggling at up to 131Hz. Moreover, these diagnostics have enhanced immunity to IEC 61000-4-4 EFT and IEC 61000-4-6 Conducted RF.

The SPI interface has a built-in chip addressing decoder, which allows communication with two MAX22915 utilizing a common chip select (CS). The 16-LED driver matrix provides indications of per-channel fault and status. Internal active clamps allow for fast turn-off of inductive loads. Integrated ESD and surge protection requires only a single TVS on VDD. The MAX22915 is available in a compact 50-pin 6mm × 7mm flip chip QFN package.

APPLICATIONS

  • Industrial Digital Outputs
  • PLC Systems
MAX22915
Industrial Octal High-Side Switch with Advanced Diagnostics
MAX22915 Pin Configuration MAX22915 Simplified Application Diagram MAX22915 Chip Illustration
Add to myAnalog

Add product to the Products section of myAnalog (to receive notifications), to an existing project or to a new project.

Create New Project
Ask a Question

Documentation

Data Sheet 1

User Guide 1

Learn More
Add to myAnalog

Add media to the Resources section of myAnalog, to an existing project or to a new project.

Create New Project

Software Resources

Device Drivers 1

Tools & Simulations

IBIS Model 1

Evaluation Kits

eval board
schematic 1
schematic 2
schematic 3
MAX22915EVKIT

Evaluates the MAX22915, Industrial Octal High-Side Switch with Advanced Diagnostics

Buy Now View Details

Features and Benefits

  • Full and Easy Evaluation of MAX22915
  • Per-Channel Active Current Limit at 1A (typ)/1.3A (max)
  • Robust Operation with Wide Range Of Input Voltages and Load Conditions
  • VMOK, FAULT, and READY LED Indications
  • LED Indication of Channels Status and Faults
  • Fast Inductive Load Demagnetization
  • Per-Channel Open-wire, Overload, short-to-VDD, and Overcurrent Detection
  • 7-Bit ADC to Monitor Chip Temperature, Per-Channel Output Current, or VDD Supply Voltage
  • Supports SPI and SYNCH Watchdogs
  • Communication Error Indication at SPIERR
  • Pin Addressable and Daisy-Chain SPI Communication with On-Board USB2GPIO Interface
  • −40°C to +125°C Temperature Range
  • Transient Immunity according to IEC 61000-4-2 Surge and IEC 61000-4-5 ESD Standards
  • Enhanced EFT and RF Conducted Immunity on Per-Channel Diagnostics with Switches On, Off, or Toggling at up to 131Hz
  • Safe Operation with On-Board Digital Isolation, Functional Earth Connection and Y-cap
  • Proven PCB Layout
  • Fully Assembled and Tested
  • Windows 10 or Newer Compatible Software

Product Details

This evaluation kit (EV kit) provides a proven design to evaluate the MAX22915, 8-channel high-switch with advanced diagnostics. The EV kit includes the MAX22915 evaluation board, a USB-C cable, and a graphical user interface (GUI) that provides communication from a PC to the EV kit through a USB port. The MAX22915 EV kit comes with a MAX22915AFG+ in a 50-pin 6mm × 7mm FC2QFN package, installed as U1. The EV kit can operate in multiple modes, which include addressable SPI mode with Analog Devices GUI, or through PMOD connector to interface with external MCUs and firmware, and daisy-chained SPI mode through two PMOD connectors with multiple devices connected in daisy-chain.

The GUI is compatible with Windows® 11 for exercising the features of the MAX22915 digital output. The EV kit software gives access to the full register map and diagnostic data, which allows individual control of the eight high-side switches. The EV kit software retrieves all the diagnostic information from the MAX22915, such as per-channel open-wire conditions with outputs on, off, or switching at up to 131Hz. Other diagnostic information includes the status of output channels, supply undervoltage alerts, global and per-channel overload alarms, temperature warnings, and other global fault alarms. In addition, the EV kit software configures the internal 7-bit ADC and executes continuous, on-demand or single measurement on supply voltage, per-channel load current or chip temperature.

The MAX22915 EV kit must be powered from an external +24V power supply and can consume up to 8A (typ) when fully loaded. The USB2GPIO interface, as well as the digital galvanic isolation, is powered from the USB-C port.

A single TVS diode on VDD protects all output channels against ±1kV/42Ω IEC 61000-4-5 surge transients. The MAX22915 EV kit is specified operate normally with its enhanced noise immunity to IEC 61000-4-4 EFT and IEC 61000-4-6 conducted RF.

Windows based GUI software is available for use with the EV kit and a user can download it from Analog Devices website. Windows 10 or newer Windows operating system is required to use the EV kit software.
MAX22915EVKIT
Evaluates the MAX22915, Industrial Octal High-Side Switch with Advanced Diagnostics
MAX22915EVKIT Angle View MAX22915EVKIT Top View MAX22915EVKIT Bottom View

Latest Discussions

No discussions on MAX22915 yet. Have something to say?

Start a Discussion on EngineerZone®

Recently Viewed