SNVU785B february   2022  – august 2023 TPS389006-Q1

 

  1.   1
  2.   Trademarks
  3. 1Introduction
    1. 1.1 Related Documentation
    2. 1.2 TPS389006-Q1 Applications
  4. 2Schematic, Bill of Materials, and Layout
    1. 2.1 TPS389006Q1EVM Schematic
    2. 2.2 TPS389006Q1EVM Bill of Materials
    3. 2.3 Layout and Component Placement
    4. 2.4 Layout
  5. 3EVM Connectors
    1. 3.1 EVM Test Points
    2. 3.2 EVM Jumpers
  6. 4EVM Setup and Operation
    1. 4.1 Setup and GUI Installations
      1. 4.1.1 TPS389006Q1EVM Hardware Setup
      2. 4.1.2 TPS389006Q1EVM Software Setup
    2. 4.2 Quick Start to TPS389006Q1EVM GUI
    3. 4.3 Example Operation of TPS389xxx-Q1
  7. 5Revision History

4 EVM Setup and Operation

This section describes the functionality and operation of the TPS389006Q1EVM. Refer to the TPS389006-Q1 Multichannel Overvoltage and Undervoltage I2C Programmable Voltage Supervisor and Monitor data sheet for details on the electrical characteristics of the device.

The TPS389006Q1EVM comes with the TPS389006004RTERQ1 IC meaning the device is capable of monitoring up to six separate voltage rails. The EVM is capable of many different configurations to fully evaluate the functionality of all the TPS389006-Q1 device variants. The default jumper configuration of the TPS389006Q1EVM is mentioned in Table 3-2.

The TPS389006Q1EVM comes with USB to GPIO connector, I2C bus repeaters, comparators, two LDOs, socket and solder down footprints, the ability to monitor up to eight (8) voltage rails, the option to daisy-chain up to three EVMs at a time via 10-pin connector, jumper selectable I2C address, I2C pullup voltage options, and TPS389006004RTERQ1 IC. The TPS389006Q1EVM also provides the ability for each monitored rail to be voltage divided down by resistor dividers on each of the monitored and input lines. The user must choose appropriately sized resistors such that the divided voltage is above, below or within the window of the voltage threshold depending on the type of input sensing topology is setup for each monitored input channel. Consult the Device Threshold Table in the TPS389006-Q1 data sheet to verify proper voltage monitored values.

The TPS389006Q1EVM is designed to be daisy-chain where the primary board is connected to the USB to GPIO connector (J18) and the output connector (J8) provides VDD, VAUX, SYNC, SCL, SDA, NIRQ, and GND to the (J18) connector of the secondary board through a 10-pin ribbon cable. When the daisy-chain option is being used, jumpers on the secondary board (J19-J22 and J37-J40) must be configured properly or else possible damage to the IC or EVM can occur. Jumper settings of J19, J20, and J21 must be left open whereas J22, J37, J38, J39, and J40 need to be shunted with jumpers for proper setup of the secondary board during daisy-chain setup. Also, the I2C rail voltage for the secondary board in the daisy-chain mode is defined as
VI2CPULLUP = VAUX = 3.3 V. See Figure 2-2 for reference.

Equipment Needed for TPS389006Q1EVM Evaluation:

  • TPS389006Q1EVM
  • TI's USB Interface Adapter (with ribbon cable)
  • Power Supply (3.3 V)
  • Multimeters
  • Multi-channel Oscilloscope (review evaluation waveforms)
  • Jumper Wires/Cables