SLUUD62 September 2025
2.4 Hardware Setup
Use the following list to set up the EVM testing equipment as shown in the figure below:
- Install or customize EVM jumper connections as
explained in Table 2-2.
Only 1 shunt must be installed for each group of headers: JP8-JP11, JP12-JP15, JP17-JP20 to set the default cell count, cell voltage and pre/charge/term current, respectively. The pins are read and register defaults set at POR from either VIN or battery or after ILIM_HIZ is pulled high. The cell count and voltage product sets the default battery regulation voltage and minimum system voltage.
- Set PS #1 for 12V DC, 3-A current limit and then turn off the supply.
- Connect the output of PS#1 in series with a current meter to J2 (VPWR and PGND).
- Connect a voltage meter across TP10 (VIN_K) and any AGND test point or across J2.
- Turn on Load #1, set to constant voltage mode, and output to 5-V. Disable Load.
- Connect a voltage meter across TP15 and TP16 to measure the voltage across the ACx sense resistor. The measurement divided by the sense resistor gives IIN/IIN_REV input/output current.
- Connect a voltage meter across TP14 (SRN) and any AGND test point or across the J3 connector to measure battery voltage.
- Connect a voltage meter across TP8 and TP9 to measure the voltage across the SRx sense resistor. The measurement divided by the sense resistor gives battery current.
- Connect the EV2400 or EV2500 USB interface board to
the computer with a USB cable and from I2C port to J5 with the 4-pin cable.
Figure 2-1 Test Setup for BQ25690 EVM