Texas Instruments BQ25306EVM, Руководство пользователя

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2.3 Test Procedure
2.3.1 Initial Settings
Use the following steps for enable the EVM test setup:
Make sure Section 2.1 steps have been followed. 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
Note
Completely disconnect Load #1 from BATTERY connections if different value is seen.
2.3.2 Precharge Mode Verification
Enable Load #1 and take measurements as follows
1.
Measure → VBAT (BAT-TP5 and PGND-TP11) = 2.5V ± 0.1V
2. Observe → STAT LED (D2) on
3. Measure → IBAT for respective battery charger IC from Table 2-1
Table 2-1. Precharge Current Measurement
BQ25306EVM
IBAT 100mA ± 50mA
2.3.3 Fast Charge Mode Verification
1. Change Load #1 to 3.8V and take measurements as follows:
a. Measure → VBAT (BAT-TP5 and PGND-TP11) = 3.8V ± 0.1V
b. Observe → STAT LED (D2) on
c. Measure → IBAT for respective battery charger IC from Table 2-2
Table 2-2. Fast Charge Current Measurement
BQ25306EVM
IBAT 1000mA ± 100mA
2.3.4 Battery Temperature Monitoring Verification
1. Connect PS2 across TS-TP7 and PGND-TP12. 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 Table 2-2
2. Change PS2 to 4V and take measurements as follows:
a. Measure → VTS (TS-TP7 and PGND-TP12) = 4V ± 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
i. For more information on TS threshold refer to Table 1-1
3. Change PS2 to 1V and take measurements as follows:
a. Measure → VTS (TS-TP7 and PGND-TP12) = 1V ± 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
i. For more information on TS threshold refer to Table 1-1
2.3.5 Evaluation Results
This section contains efficiency data for BQ25306 at both 1-cell and 2-cell Li-ion battery configuration,
specifically on the BQ25306EVM.
Test Setup and Results www.ti.com
4 BQ25306 (BMS005) Evaluation Module SLUUC50A – MARCH 2020 – REVISED DECEMBER 2020
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