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2.4 Procedure
2.4.1 Charge Function
1. Make sure
Equipment Setup
2. Set Tgt Address to D6(6B)
3. Write "020A" to charge option 0 register 0x00H.
Measure → V(J1(V
)) = 10 V ±0.5 V
IN
Measure → V(TP28(CHG_OK)) = 3 V to 4.5 V
Measure → V(TP21(REGN)) = 6 V ±1 V
Measure → V(TP22(ILIM_HIZ)) = 2.2 V
4. Write "0400" to charge current 0x02H.
Turn on load #1.
Measure → V(J6(VSYS)) = 8.4 V ±0.5 V
5. Turn on LOAD #2 (VBAT Load).
Measure → V(J5(VBAT)) = 7 V ±0.5 V
Measure → I(J5(VBAT)) = 2 A ±0.5 A
2.4.2 OTG Function
Use the following for OTG function settings:
1. Connect a 7-V power supply to the VBAT load. Remove the V
physically removed from board).
2. Write "09C4" to the OTG voltage register.
3. Write "1000" to the OTG current registers.
4. Remove JP2 (Enable OTG/VAP function).
5. Select EN_OTG in Charge Option 3.
Measure → V(J1(V
)) = 5 V ±1 V
IN
SLUUCB9A – JUNE 2020 – REVISED JANUARY 2021
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steps are followed.
Figure 2-4. EN_OTG
Copyright © 2021 Texas Instruments Incorporated
power supply from J1 (Connection must be
IN
BQ2573X Evaluation Module
Test Summary
9
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