SWRU550A February   2019  – May 2019

 

  1.   MMWAVEPOEEVM Power Over Ethernet Solution
    1.     Trademarks
    2. 1 Key Features
    3. 2 Kit Contents
    4. 3 Applications
    5. 4 System Overview
      1. 4.1 Block Diagram
      2. 4.2 MSP432E401Y
      3. 4.3 TPS23753A
      4. 4.4 TPD2E2U06
      5. 4.5 TLV431A
      6. 4.6 TPS737
    6. 5 Hardware
      1. 5.1 Hardware Overview
        1. 5.1.1 Test Points, Connectors, Jumpers, Switches, and LEDs
        2. 5.1.2 Power-Up
        3. 5.1.3 Downloading the Binary
        4. 5.1.4 Connecting the MMWAVEICBOOST
      2. 5.2 Testing and Results
    7. 6 Design Files and Software Tools
      1. 6.1 Software, Development Tools, and Example Codes
      2. 6.2 Schematics
      3. 6.3 Bill of Materials
      4. 6.4 PCB Layout Recommendations
      5. 6.5 REACH Compliance
  2.   Revision History

4.5 TLV431A

The TLV431 device is a low-voltage 3-terminal adjustable voltage reference with specified thermal stability over applicable industrial and commercial temperature ranges. Output voltage can be set to any value between VREF (1.24 V) and 6 V with two external resistors. These devices operate from a lower voltage (1.24 V) than the widely used TL431 and TL1431 shunt-regulator references.

When used with an optocoupler, the TLV431 device is an ideal voltage reference in isolated feedback circuits for 3-V to 3.3-V switching-mode power supplies. These devices have a typical output impedance of 0.25 Ω. Active output circuitry provides a very sharp turn-on characteristic, making them excellent replacements for low-voltage Zener diodes in many applications, including on-board regulation and adjustable power supplies.