SLUUCX1 august   2023 BQ25173-Q1

 

  1.   1
  2.   Description
  3.   Features
  4.   Applications
  5.   5
  6. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  7. 2Hardware
    1. 2.1 I/O Descriptions
    2. 2.2 Printed Circuit Board Assembly
    3. 2.3 Best Practices
      1.      15
    4. 2.4 Test Summary
      1. 2.4.1 Equipment
      2. 2.4.2 Cautions
      3. 2.4.3 Test Instructions
  8. 3Hardware Design Files
    1. 3.1 Schematic
    2. 3.2 Board Layout
    3. 3.3 Bill of Materials
  9. 4Additional Information
    1.     Trademarks

2.2 Printed Circuit Board Assembly

The BQ25173-Q1EVM PCB contains the BQ25173-Q1 IC, LDO TPS7B8133 and support circuits. This board contains several jumpers and connectors. R3 can be used to adjust charge current (ISET) value from 10 mA to 800 mA. Charge Voltage VREG can be set to 4 values, 2.5V and 5 V with J7 and 7.5V and 10 V with R18 and R17.

The board has two 10 F super capacitors, C8 & C7 connected in series for equivalent value of 5F at 5 V. Jumper JP6 can be used to disconnect capacitors from output. Charge voltage can be set to 2.5V or 5 V with JP7, 1S and 2S configuration. For 3S and 4S, 7.5V and 10 V configuration resistor position R17 and R18 are used. External capacitors are required and C8 & C7 are disconnected.