SLUUBA2B March   2015  – November 2015 BQ25890 , BQ25892 , BQ25895 , BQ25895M , BQ25896

 

  1.   bq25890EVM, bq25892EVM, bq25895EVM, bq25896EVM and bq25895MEVM(PWR664)
    1.     Trademarks
    2. 1 Introduction
      1. 1.1 EVM Features
      2. 1.2 I/O Descriptions
    3. 2 Test Summary
      1. 2.1 Equipment
      2. 2.2 Equipment Setup
      3. 2.3 Procedure
        1. 2.3.1 Communication Verification
        2. 2.3.2 Charger Mode Verification
        3. 2.3.3 Boost Mode Verification
        4. 2.3.4 Helpful Hints
    4. 3 PCB Layout Guideline
    5. 4 Board Layout, Schematic, and Bill of Materials
      1. 4.1 PWR664 PCB Layouts
      2. 4.2 Schematics
      3. 4.3 Bill of Materials
  2.   Revision History

2.2 Equipment Setup

  1. Set PS#1 for 5-V DC, 1-A current limit and then turn off the supply.
  2. Connect the output of PS#1 in series with a current meter (multimeter) to J1 (VBUS and GND).
  3. Connect a voltage meter across TP3 (VBUS) and TP6 (PGND).
  4. Turn on the Load, set to constant voltage mode and output to 2.5 V. Turn off (disable) Load. Connect Load in series with a current meter (multimeter), ground side, to J4 (BAT+ and GND) as shown in Figure 3.
  5. Connect a voltage meter across J4 (BAT+ and GND).
  6. Connect the EV2300 USB interface board to the computer with a USB cable and from I2C port to J8 with the 4-pin cable. The connections are shown in Figure 2.
  7. Remove jumper (if installed) from JP5.
    8. EV2300.pngFigure 2. Connections of the EV2300
  8. Install shunts as shown in Table 3.
    9. fig04_sluuba2.gifFigure 3. Original Test Setup for PWR664 (bq2589x EVM)
  9. Turn on the computer. Launch the bq2589x evaluation software, choose Charger as shown in Figure 4, then choose the appropriate .bqz file as shown in Figure 5.
    10. nfig04_batt_sluuba2.pngFigure 4. Start Window of the bq2589x Evaluation Software

    Figure 5 illustrates the following part selection options:

    • Select the Charger_1_00-bq25890-895.bqz file, if evaluating the bq25890 or bq25895
    • Select Charger_1_00-bq25892-896.bqz, if evaluating the bq25892

    bqSTUDIO_ss_SLUUBA2.jpgFigure 5. Part Select Window of the bq2589x Evaluation Software
  10. If an error pops up stating the communications adapter was not found (Figure 6), click OK to proceed. Next, unplug and re-plug the adapter.
    11. GUI_error_sluuba2.pngFigure 6. Communications Adapter Error

    If an error pops up stating there is no acknowledge from the device (Figure 7), click OK to proceed and then pick the appropirate I2C address from the drop-down menu in the GUI (see the Procedure section).

    acknowledge_sluuba2.pngFigure 7. Acknowledge Error

    Check the connection status of the EV2300 in bqStudio by going to View → DashBoard. A panel on the left-hand side should appear, with the status of the EV2300 at the top (Figure 8).

    Dashboard_sluuba2.pngFigure 8. DashBoard Status Tab
  11. Choose Field View, as shown in Figure 9. The main window of the bq2589x software is shown in Figure 10.
    12. nfig06_sel_fld_view_sluuba2.pngFigure 9. Select Field View
    nfig07_main_eval_win_sluuba2.pngFigure 10. Main Window of the bq2589x Evaluation Software