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

1.2 I/O Descriptions

Table 2 lists the jumper connections available on this EVM.

Table 2. EVM Connections

Jack Description
J1–VBUS Input: positive terminal
J1–GND Input: negative terminal (ground terminal)
J2–PMID PMID pin connection/Power bank output
J2–GND Ground/Power bank output negative terminal
J3–SYS Connected to system
J3–GND Ground
J4–BAT+ Connected to battery pack
J4–GND Ground
J5 Input mini-USB port
J6 Output mini-USB port
J7 USB-to-GPIO connector
J8 I2C 4-pin connector

Table 3 lists the EVM jumper connections.

Table 3. Jumper Connections

Jack Description Factory Setting
JP1 For bq25892/6 input current setting: Low: adaptor port; High: USB input bq25890/5/5M: Not installed; bq25892/6: short PSEL to LOW
JP2 D–/PG pin selection bq25890/5/5M: short to D–; bq25892/6: short to PG
JP3 Pin 24 selection: to DSEL, PG, or NC bq25890/5/5M_DSEL: short to DSEL; bq25892/6: not installed
JP4 STAT, PG, CE, INT, OTG pins internal pullup source (VSYS or BAT) Short to VSYS
JP5 D+/D– connections for input current limit setting bq25890/5/5M: installed; bq25892/6: Not installed
JP6 USB current limit selection pin during buck mode and PSEL is high/ Enable pin during boost mode Not installed
JP7 CE pin setting: pull low to enable the charge Not Installed
JP8 TS pin to GND Not Installed
JP9 TS resistor divider pullup source (REGN) connection Installed
JP10 Internal 10 k to GND to TS pin Installed

Table 4 lists the recommended operating conditions for this EVM.

Table 4. Recommended Operating Conditions

Symbol Description MIN TYP MAX Unit
Supply voltage, VIN bq25890/2/5/5M/6 Input voltage from AC adapter 3.9 14 V
Battery voltage, VBAT 0 3.7 4.4 V Voltage applied at VBAT terminal 0 4.5 V
IBAT Fast charging current 5 A
Discharging current through internal MOSFET 9 A
Supply current, IIN Maximum input current from AC adapter input 0 3.25 A