SLUUC53A October   2020  – March 2021 BQ25300 , BQ25302 , BQ25303J

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 EVM Features
    2. 1.2 I/O Descriptions
  3. 2Test Setup and Results
    1. 2.1 Equipment
    2. 2.2 Equipment Setup
    3. 2.3 Test Procedure
      1. 2.3.1 Initial Settings
      2. 2.3.2 Precharge Mode Verification
      3. 2.3.3 Fast Charge Mode Verification
      4. 2.3.4 Battery Temperature Monitoring Verification
      5. 2.3.5 Evaluation Results
      6. 2.3.6 Helpful Tips
  4. 3PCB Layout Guideline
  5. 4Board Layout, Schematic, and Bill of Materials
    1. 4.1 Board Layout
    2. 4.2 Schematic
    3. 4.3 Bill of Materials
  6. 5Revision History

1.2 I/O Descriptions

Table 1-2 lists the input and output connections available on this EVM and their respective descriptions.

Table 1-2 EVM I/O Connections
Jack Description
J1(1) – GND Ground
J1(2) – EXT_TS Connect to thermistor of external battery
J1(3) – BATTERY Positive rail of the charger battery input, connected to the positive terminal of the external battery
J2(1) – GND Ground
J2(2) – VIN Positive rail of the charger input voltage

Table 1-3 lists the jumper and shunt installations available on this EVM and their respective descriptions.

Table 1-3 EVM Jumper and Shunt Installation
Jack Description BQ2530X Setting
SH-JP1 EN 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-JP2 POL pull-up rail selection.
1-2 POL pull down to GND.		 Shunt Not Installed
SH-JP3 EN 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-JP4 Set charge regulation voltage of BQ25306 to 4.2 V Jumper Not Installed
SH-JP5 Set charge regulation voltage of BQ25306 to 8.4 V Jumper Not Installed
SH-JP6 VSET Short to GND.
For charge regulation voltage corresponding to this setting, refer to data sheet of the respective battery charger IC shown in Table 1-1.		 Installed
SH-JP7 VSET Resistor pull down to GND of 10.2 kΩ.
For charge regulation voltage corresponding to this setting, refer to data sheet of the respective battery charger IC shown in Table 1-1.		 Shunt Not Installed
SH-JP8 VSET Resistor pull down to GND of 51.1 kΩ.
For charge regulation voltage corresponding to this setting, refer to data sheet of the respective battery charger IC shown in Table 1-1.		 Shunt Not Installed
SH-JP9 ICHG Resistor pull down to GND with 40.2 kΩ to set charge current to 1 A.
Installed
SH-JP10 ICHG Resistor pull down to GND with 20 kΩ to set charge current to 2 A.
Shunt Not Installed

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