Texas Instruments BQ24800EVM, Руководство пользователя, Страница: 8 / 23

Procedure
www.ti.com
8 SLUUC60 – February 2020
Submit Documentation Feedback
Copyright © 2020, Texas Instruments Incorporated
BQ24800 EVM
Figure 4. Test Setup for BQ24800EVM
3. Type “2944” (mA) in ChargeCurrent Register and click OK .
This sets the battery charge current regulation threshold to 2.944 A.
• Measure
→
IBAT = 3000 mA ±300 mA
• Measure
→
V[TP14(IIADP)] = 340 mV ±40 mV
4. Set Load #1 current to 3.0 A ±50 mA but disable the output. Make sure ISYS = 0 A ±10 mA. Enable
the output of Load #1.
• Measure → ISYS = 3000 mA ±300 mA
• Measure → IBAT = 1800 mA ±300 mA
• Measure
→
IIN = 4100 mA ±400 mA
• Measure
→
V[TP14(IADP]) = 820 mV ±100 mV
5. Turn off the Load #1.
• Measure → ISYS = 0 ±100 mA
• IBAT = 3000 mA ±300 mA
3.4 Hybrid Boost Mode
Use the following steps for hybrid boost mode:
1. Enter “1A44” in ChargeOption3 value to enable the hybrid boost function
2. Change Load #2 with PS#2. Make sure a voltage meter is connected across J2 (BAT, GND).
3. Enable the output of PS#2. Make sure the output voltage is 10 V ±500 mV and 3-A current limit.
4. Set Load #1 load current to 5.0 A ±50 mA. Enter boost mode.
• Measure → ISYS = 5000 mA ±500 mA
• Measure → IBAT = –2000 mA ±600 mA
• Measure → IIN = 4100 mA ±400 mA
• Measure → V[TP15(IIDCHG)] = 270 mV±100 mV
5. Set Load #1 load current to 0.5 A ±50 mA. Exit boost mode. Back to charging mode.
• Measure → ISYS = 500 mA ±50 mA