Test Setup And Results - Texas Instruments BQ25308 User Manual

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3 Implementation Results

3.1 Test Setup and Results

3.1.1 Test Procedure
3.1.1.1 Initial Settings
Use the following steps to enable the BQ25308 EVM test setup:
1. Make sure Section 2.3
2. Turn on PS1.
• Measure→ VPMID (PMID-TP2 and PGND-TP10) = 5.00V ± 0.3V.
• Completely disconnect PS1 from J2 if different voltage value is seen on PMID.
Completely disconnect Load #1 from BATTERY connections if different value is seen.
3.1.1.2 Precharge Mode Verification
1. Turn on PS2
2. Enable Load #1 and take measurements as follows:
a. Measure → VBAT (BAT-TP5 and PGND-TP11) = 2.5V ± 0.1V
b. Observe → STAT LED (D2) on
c. Measure → IBAT for respective battery charger IC from
3.1.1.3 Fast Charge Mode Verification
1. Change Load #1 to 3.7V and take measurements as follows:
a. Measure → VBAT (BAT-TP5 and PGND-TP11) = 3.7V ± 0.1V
b. Observe → STAT LED (D2) on
c. Measure → IBAT for respective battery charger IC from
3.1.1.4 Battery Temperature Monitoring Verification
1. Turn on PS2 and take measurements as follows:
a. Measure → VTS (TS-TP7 and PGND-TP12) = 3V ± 0.1V
b. Observe → STAT LED (D2) on
c. Measure → IBAT for respective battery charger IC from
2. Change PS2 to 4.5V and take measurements as follows:
a. Measure → VTS (TS-TP7 and PGND-TP12) = 4.5V ± 0.1V
b. Observe → STAT LED (D2) blinking at 1Hz to indicate a fault
c. Measure → IBAT = 0A ± 10mA
d. Battery charger is operating in COLD
For more information on TS threshold, refer to data sheet of respective battery charger IC in
3. Change PS2 to 0V and take measurements as follows:
a. Measure → VTS (TS-TP7 and PGND-TP12) = 0V ± 0.1V
b. Observe → STAT LED (D2) blinking at 1Hz to indicate a fault
c. Measure → IBAT = 0A ± 10mA
d. Battery charger is operating in HOT
For more information on TS threshold, refer to data sheet of respective battery charger IC in
SLUUD09 – APRIL 2024
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steps have been followed.
Table 3-1. Precharge Current Measurement
IBAT
Table 3-2. Fast Charge Current Measurement
IBAT
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Note
Table 3-1.
BQ2530XEVM
100mA ± 50mA
Table 3-2
BQ2530XEVM
1000mA ± 100mA
Table 3-2.
Implementation Results
Table 1-1.
Table 1-1.
BQ25308 Evaluation Module 5