I have made the following customisations in the schematic
- Removed ACDRV and used two diodes in parallel in place to lower voltage drops
- Adapter current limit: 1.8A
- Adapter voltage: 15V (typical) 20V(Max) from USB-PD adapter, which will increase voltage from 5V to 15V with negotiation. No 15V hot plug-in.
- Fast charging current: 500mA
- Termination current: 100mA
- Charging voltage: 12.3V (3 series cells of 4.2V, charging them to 4.1V/cell)
- BATDRV: Removed
- Inductor: 6.8uH 4.5A 50mOhm, Output capacitor: 20uF 50V X5R
- STAT2, PG - Unused
- STAT1 - Pulled up to connect to Microcontroller
- TS - Disabled using voltage divider (50% of V ref)
- From the 10mOhm (ACN end) taking out the power to the system using a diode network to prevent current flowing back from the system to VCC of BQ24610, but to ensure that IinDPM works for the whole system with the sense resistors
- Safety timer is disabled, termination is enabled
- All capacitors are rated for 50V
- Sense resistors of 10mOhm are rated for 250mW (1.8A and 500mA are the expected maximum flow of current)
Link of schematic: https://drive.google.com/file/d/17ukuttXrAlRNNsaxAvFML0SS6ltSRHHO/view?usp=drive_link
Can TI Experts help me review the schematic and provide feedback for improvement ?
Thanks a lot in advance for the extended help.
