SLUUC51D june   2020  – july 2023 BQ25790

 

  1.   1
  2.   BQ25790EVM (BMS027) Evaluation Module User's Guide
  3.   Trademarks
  4.   4
  5. 1Introduction
    1. 1.1 EVM Features
    2. 1.2 I/O Descriptions
    3. 1.3 Recommended Operating Conditions
  6. 2Test Setup and Results
    1. 2.1 Equipment
    2. 2.2 Equipment Setup
    3. 2.3 Software Setup
      1. 2.3.1 BQSTUDIO using EV2400
      2. 2.3.2 TI Charger GUI for USB2ANY
    4. 2.4 Test Procedure
      1. 2.4.1 Initial Settings
      2. 2.4.2 Communication Verification
      3. 2.4.3 Charge Mode Verification
      4. 2.4.4 OTG Mode Verification
  7. 3PCB Layout Guidelines
  8. 4Board Layout, Schematic and Bill of Materials
    1. 4.1 Schematic
    2. 4.2 Board Layout
    3. 4.3 Bill of Materials
  9. 5Revision History

2.4.1 Initial Settings

Use the following steps to enable the EVM test setup.

  1. Make sure Section 2.2 steps have been followed.
  2. Remove the shunt on JP19 to disable charge.
  3. Make sure the PROG pin jumpers, JP22-JP29, are set to the desired frequency and cell count.
  4. If a thermistor is being simulated, then make sure the TS Jumpers are installed to the correct positions.
  5. If using BQStudio, then launch the BQSTUDIO software and select Charger then BQ25790EVM, if not already done.
  6. If using TI Charger GUI, then go to the TI Charger GUI website and select the charger from the list.
  7. Turn on PS1 and Load #1:
    • Measure ➡ VSYS-PGND (TP26 and TP48) = 8.55 V ±0.2 V
  8. Verify PG LED (D13) is on.
    Note:

    If the PG LED is not lit, then confirm a valid PS1 is connected and the correct shunt configuration was placed.

    Note:

    If the device is not communicating and does not ACK, then verify that Section 2.2 and Section 2.4.1 steps have been followed. Verify the voltage across TP42 (PULLUP) and TP49 (AGND) is approximately 3.3 V.