TIDUEB8C July   2018  – March 2021 TPS274160

 

  1.   Description
  2.   Resources
  3.   Features
  4.   Applications
  5.   5
  6. 1System Description
    1. 1.1 Key System Specifications
  7. 2System Overview
    1. 2.1 Block Diagram
    2. 2.2 Highlighted Products
      1. 2.2.1 LM5165
      2. 2.2.2 TLC59282
      3. 2.2.3 TPS4H160-Q1
      4. 2.2.4 INA253
      5. 2.2.5 TIOL111
    3. 2.3 System Design Theory
      1. 2.3.1 IO-Link PHY
      2. 2.3.2 Current Sink
      3. 2.3.3 Power Supply for L+
      4. 2.3.4 Power Supply
      5. 2.3.5 Pinouts
    4. 2.4 Software Frame Handler
      1. 2.4.1 PRU-ICSS IO-Link Frame-Handler
        1. 2.4.1.1 Performance Advantages and Benefits
        2. 2.4.1.2 Principle of Operation
  8. 3Hardware, Software, Testing Requirements, and Test Results
    1. 3.1 Required Hardware and Software
      1. 3.1.1 Hardware
      2. 3.1.2 Software
    2. 3.2 Testing and Results
      1. 3.2.1 Test Setup
      2. 3.2.2 Test Results
        1. 3.2.2.1 IO-Link Wake-Up Pulse
        2. 3.2.2.2 L+ Turnon Behavior
        3. 3.2.2.3 Current Sink on CQ
        4. 3.2.2.4 Residue Voltage
        5. 3.2.2.5 IO-Link Physical Layer Test Summary
        6. 3.2.2.6 Current Sense on Each Port
        7. 3.2.2.7 TPS4H160 Thermal Behavior
  9. 4Design Files
    1. 4.1 Schematics
    2. 4.2 Bill of Materials
    3. 4.3 PCB Layout Recommendations
      1. 4.3.1 Layout Prints
    4. 4.4 Altium Project
    5. 4.5 Gerber Files
    6. 4.6 Assembly Drawings
  10. 5Software Files
  11. 6Related Documentation
    1. 6.1 Trademarks
  12. 7About the Author
  13. 8Revision History

3.2.2.1 IO-Link Wake-Up Pulse

As previously described, the PHY must deliver a wake-up pulse of 80 µs and 500 mA. To test this, the enable signal is tied to 3.3 V and the TX signal is supplied from a function generator. This test is repeated with different polarities, loads, and voltages.

GUID-791EA0A1-DAFD-450F-BBAA-EB0229F60B0E-low.pngFigure 3-2 Testcase TCM_PHYL_INTF_IQWUH: High-Side Driver, Load = 26 Ω, 20-V Supply, 5 V/div, 10 µs/div
GUID-A7578C09-08ED-428D-9014-302258D71298-low.pngFigure 3-3 Testcase TCM_PHYL_INTF_IQWUH: High-Side Driver, Load = 26 Ω, 30-V Supply, 5 V/div, 10 µs/div
GUID-579DC11B-5FA3-463A-8182-12A114A118A2-low.pngFigure 3-4 Testcase TCM_PHYL_INTF_IQWUL: Low-Side Driver, Load = 24 Ω, 20-V Supply, 5 V/div, 10 µs/div
GUID-D2C9ABA6-EB48-402D-9A9A-238BD2AAA11E-low.pngFigure 3-5 Testcase TCM_PHYL_INTF_IQWUL: Low-Side Driver, Load = 44 Ω, 30-V Supply, 5 V/div, 10 µs/div

As Figure 3-2 through Figure 3-5 show, the TIOL111 device passes the tests.