Texas Instruments BQ25883, Руководство пользователя, Страница: 9 / 25

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Test Summary
9 SLUUC10 – February 2019
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BQ25883 QFN boost-mode battery charger evaluation module
Advance Information
2.3.2 OTG Mode I2C Register Setup
1. Turn on BS#1, set for 7.6 V.
2. In the EVM software, specify the “I2C Address” as D6 (6B) .
3. Click the Read button.
4. In the EVM GUI software Field View ensure that the following I
2
C registers have the following settings:
• Chose “Disabled” for the Watchdog Timer
• OTG Voltage Limit = "5.0 V"
• OTG Current Limit = "600 mA"
• Deselect Enable Charge
• Deselect Enable HiZ if selected
• Select Enable OTG
2.3.3 OTG Mode Test Procedure
Use the following steps for boost mode verification:
1. Observe → everything "Normal" at the Fault box
2. Measure on VM2 → V(TP1 (VBUS), TP26 (AGND)) = 5.0 V ±160 mV. Voltage of 10 mV is added to
account for DMM accuracy.
3. Set electronic load in CC mode to 500 mA, or resistive load to 10
Ω
.
4. Measure on VM2 → V(TP1 (VBUS), TP26 (AGND)) = 5.0 V ±160 mV. Voltage of 10 mV is added to
account for DMM accuracy.
5. Turn off and disconnect BS#1, Load#1, and voltmeters.
2.3.4 OTG Mode Evaluation Results
Figure 4 shows the OTG Mode Startup graph.
Figure 4. OTG Mode Startup