SLUUD09 April   2024 BQ25308

 

  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 Equipment
    3. 2.3 Equipment Setup
  8. 3Implementation Results
    1. 3.1 Test Setup and Results
      1. 3.1.1 Test Procedure
        1. 3.1.1.1 Initial Settings
        2. 3.1.1.2 Precharge Mode Verification
        3. 3.1.1.3 Fast Charge Mode Verification
        4. 3.1.1.4 Battery Temperature Monitoring Verification
        5. 3.1.1.5 Helpful Tips
  9. 4Hardware Design Files
    1. 4.1 Schematic
    2. 4.2 PCB Layout
      1. 4.2.1 Board Layout
    3. 4.3 Bill of Materials
  10. 5Additional Information
    1. 5.1 Trademarks

2.1 I/O Descriptions

Table 3-1 lists the input and output connections available on this EVM and the respective descriptions.

Table 2-1 EVM I/O Connections
JackDescription
J1(1) – GNDGround.
J1(2) – EXT_TSConnect to thermistor of external battery.
J1(3) – BATTERYPositive rail of the charger battery input, connected to the positive terminal of the external battery.
J2(1) – GNDGround.
J2(2) – VINPositive rail of the charger input voltage.

Table 3-2 lists the jumper and shunt installations available on this EVM and the respective descriptions.

Table 2-2 EVM Jumper and Shunt Installation
JackDescriptionBQ2530X Setting
SH-JP1EN pull-up rail selection.
1-2 pulls EN up to external VDD (EN_CTRL either REGN or external voltage source depending on JP3 configuration).
2-3 pulls EN down to GND.		JP1 2-3 Installed
SH-JP2POL pull-up rail selection.
1-2 POL pull down to GND.		Shunt not installed
SH-JP3EN external VDD rail selection (EN_CTRL).
1-2 pulls EN_CTRL to external voltage supply connected to JP3-1.
2-3 pulls EN_CTRL to REGN.		Shunt not installed
SH-JP4Not used for BQ25308.Jumper not installed
SH-JP5Not used for BQ25308.Jumper not installed
SH-JP6VSET Short to GND.
For charge regulation voltage corresponding to this setting, refer to data sheet of the respective battery charger IC shown in Table 2-1.		Installed
SH-JP7VSET Resistor pull down to GND of 10.2kΩ.
For charge regulation voltage corresponding to this setting, refer to data sheet of the respective battery charger IC shown in Table 2-1.		Shunt not installed
SH-JP8VSET Resistor pull down to GND of 51.1kΩ.
For charge regulation voltage corresponding to this setting, refer to data sheet of the respective battery charger IC shown in Table 2-1.		Shunt not installed
SH-JP9ICHG Resistor pull down to GND with 40.2kΩ to set charge current to 1A. Installed
SH-JP10ICHG Resistor pull down to GND with 20kΩ to set charge current to 2A. Shunt not installed

For recommended operating conditions, refer to data sheet of the respective battery charger IC shown in Table 2-1.