Other Parts Discussed in Thread: BQ24650, BQ25895
Help greatly appreciated. Using the BQ25071 with input from a a 5v (Open Voltage) panel. Loaded voltage approximately 4.0v. When battery is low I find that the LDO oscillates and with it the TS divider voltage (set according to datasheet recommendation without battery NTC). The BQ25071 is not charging the battery. I believe that the culprit is the TS input out of range (more than 25 millisecond low-high oscillation) and disabling the chip. Have added capacitance to dampen oscillation without benefit.
Is there an alternative approach to disabling the TS sampling? If I tie the TS to the battery directly (through a resistor divider) voltage change as a result of load and charging might bring the TS out of range.
Thoughts. Thank you.
Jim S.