SPRUJ06 October   2021

 

  1.   Trademarks
  2. 1Introduction
  3. 2Revisions and Assembly Variants
  4. 3System Description
    1. 3.1 Key Features
    2. 3.2 Functional Block Diagram
    3. 3.3 Interfaces and Major Component Description
      1. 3.3.1 Breakout Board Section
      2. 3.3.2 IO-Link Section Overview and Major Component Description
        1. 3.3.2.1 IO Link Transceiver TIOL111DMWR
        2. 3.3.2.2 Smart Switch TPS4H160BQPWPRQ1
        3. 3.3.2.3 Serializer SN65HVS882
        4. 3.3.2.4 INA253
        5. 3.3.2.5 LED Driver TLC59282
        6. 3.3.2.6 Signal Routing
      3. 3.3.3 Power Section
        1. 3.3.3.1 Power Input
      4. 3.3.4 Board Mating Connections
  5. 4Known Issues
    1. 4.1 Issue 1: Voltage Spike Across the TX Line of the Transceiver

4.1 Issue 1: Voltage Spike Across the TX Line of the Transceiver

Affected PCB version: E1

Board Modification Sticker: M1

Severity: High

The original design of the IO Link breakout board resulted in occasional voltage spikes on the TX line of the transceiver. A fix was implemented by rotating transistors Q4, Q5, Q6, Q7, Q8, Q9, Q10 and Q11 and adding a diode in line with Pin 1 of the transistor.

This Mod was applied to all boards shipped with a 1st revision PCB.