SLUUCR6 December   2022

 

  1.   BQ25176MEVM Evaluation Module
  2.   Trademarks
  3.   3
  4. 1Introduction
    1. 1.1 Printed Circuit Board Assembly
    2. 1.2 I/O Descriptions
  5. 2Test Summary
    1. 2.1 Equipment
    2. 2.2 Cautions
    3. 2.3 Test Instructions
  6. 3Board Layout, Schematic, and Bill of Materials
    1. 3.1 Board Layout
    2. 3.2 Schematic
    3. 3.3 Bill of Materials
  7. 4Revision History

1.2 I/O Descriptions

Table 1-1 lists the input and output connections available on this EVM and their respective descriptions.

Table 1-1 EVM I/O Connections

I/O Connector

 Description
J1 – VIN / GND Input voltage from external power supply, recommended 5 V. Max operating input voltage is 6.6 V, OVP trip point. Max input voltage is 30 V while in OVP.
J2 – OUT (BAT+) / GND (BAT-) / GND / BIAS Battery connection, connect 10-kΩ resistor to BIAS or use 10 kΩ on PCB (JP6).
JP1 – VSET ADJ. Disable R9, default is installed.
JP2 – REG / IN / OUT

Source voltage for housekeeping regulator, U2. Default Input voltage IN.
JP3 – PG (Power Good) LED Default setting is ON.
JP4 – ISET Sets Fast Charge Current. Fixed = 400 mA ADJ = R22 range 60 mA to 600 mA
JP5 - STAT LED Default setting is ON.
JP6 – BIAS Fixed=10 k.
JP7 Not used, do not install
JP8 Not used, do not install

JP9

 Not used, do not install

Table 1-2 lists the S1 switch positions for VSET and their respective descriptions. Use only one postion ON, do not combine.

Table 1-2 VSET S1 Switch Positions
Position / RX / Value Li+Voltage / Configuration

#1 / R1 / 100 kΩ

3.5V / 1-Cell LiFePO4

#2 / R2 / 82.5 kΩ

3.6V / 1-Cell LiFePO4

#3 / R3 / 61.9 kΩ

3.7V / 1-Cell LiFePO4

#4 / R4 / 35.7 kΩ

4.15V / 1-Cell Li-Ion

#5 / R5 / 27.4 kΩ

4.2V / 1-Cell Li-Ion

#6 / R6 / 24.3 kΩ

4.35V / 1-Cell Li-Ion

#7 / R7 / 18.2 kΩ

4.4V / 1-Cell Li-Ion

#8 / R8 / 0 Ω

Short Circuit – No Charge