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Skyworks Solutions Inc. Si834x Isolated Smart Switches

Skyworks Solutions Inc. Si834x Isolated Smart Switches are ideal for driving resistive and inductive loads like solenoids, relays, and lamps commonly found in industrial control systems like programmable logic controllers (PLC). These switches are galvanically isolated for safety using CMOS-based isolation technology, resulting in better reliability, performance, and high common-mode transient immunity (CMTI) of over 150kV/μs. The logic interface for the Si834x supports low-power 2.25V MCUs and FPGAs. The switches offer a wide power supply range of 9V to 32V, making them ideal for a range of industrial digital voltage levels. Capable of providing up to 0.5A of IEC61131-2-compliant continuous current in a quad-channel configuration, Skyworks Solutions Inc. Si834x switches also provide 2.5A of continuous current in a single-channel configuration.

An unprecedented level of detail and control of each switch is offered through seven separate diagnostics. Diagnostics are configured, monitored, and cleared via an SPI interface or exposed on active-low, open-drain indicator pins for easy access and combination. The highest level of device reliability is ensured using diagnostic communication, independent of the switch control signals with separate isolation channels and constant fault monitoring.

Features

  • High-side or low-side switch options
  • 2.25V to 5.5V logic supply
  • 9V to 32V switch supply
  • Fast (10μs) update rate
  • High continuous current and low RON
    • 4 channels: 700mA (145mΩ)
    • 2 channels: 1.25A (73mΩ)
    • 1 channel: 2.5A (38mΩ)
  • Innovative mulit-voltage output clamp
    • Demagnetization energy >2.5J
    • Efficient and fast turn OFF
  • 7A inrush current tolerance for 20ms
  • Overload protection with current limit
  • 5kV ESD Protection
  • -40°C to +125°C operating temperature range
  • Per channel over-temperature protection
  • Undervoltage protection on both supplies
  • Up to 7 different diagnostic reports
    • Multiple power supply reports
    • Overcurrent, overtemperature
    • Open-circuit warning
    • Communication error
  • Dedicated channel status indicators
  • Dedicated fault indicator
  • Asynchronous output disable function
  • Control up to 128 channels with SPI
  • 1.5kVRMS safety rated galvanic isolation
  • Transient immunity >150kV/μs (CMTI)
  • Compliant to IEC 61131-2
  • Compact 9x9 DFN-32 package

Applications

  • Programmable logic controllers
  • Industrial data acquisition
  • Distributed control systems
  • CNC machines
  • I/O modules
  • Motion control systems

Safety

  • UL 1577 recognized
    • Up to 1500Vrms for 1 minute
  • CSA component notice 5A approval
    • IEC 60950-1, 62368-1
  • VDE certification conformity
    • VDE 0884-10
  • CQC certification approval
    • GB4943.1

Videos

Development Tools

Skyworks Solutions Inc. Si834x-EVB Evaluation Boards

Allows designers to evaluate the Si834x family of Isolated Smart Switches.

Learn Moreabout Skyworks Solutions Inc. Si834x-EVB Evaluation Boards View Productsrelated to Skyworks Solutions Inc. Si834x-EVB Evaluation Boards
Published: 2019-09-11 | Updated: 2024-02-01