BQ25606: bq25606 Charging Problem

Hi,

Can you please send a PDF of the schematic? I cannot read all of the values because the image is too pixelated. What should your charge voltage regulation be (what is the full charge voltage of the battery)?

Regards,

Mike Emanuel

drive.google.com/.../view

Thank for Reply 

I have attached the pdf, charging input voltage is 5V & LIPO battery 3.7v 2100mAh. I have connected ILIM 240 ohms and ICHG 560 ohms for 1150mAh current limit and also VSET at flotation, there is no connection for 4.2V Voltage Limit.

SCH_Schematic5_2024-06-14.pdf

Hi  

Michael Emanuel

Here I have attached file, For Now I didn't have Scope Outputs can you please able to check the mistakes in this Circuit.

Hi,

TS = 2.75V It varies timely from 2.75 to 2.785 

Vin = 5.2V

BAT V = 3.7V

I have a connected a system load which consumes up to 400mA current at 3.3V, this load is connected via buck Boost converter.

Thank you

What is the system voltage at this time? Do you have the waveforms requested?

Regards,

Mike Emanuel

Sorry for the Delay Sir, Here the Requested Scope Plots, the system voltage 5V

...

1.Input Voltage Plot

2.Switching Voltage Plot

3.System Output Voltage Plot

4.Battery Voltage Plot

1.stat Pin plot

Hello,

I did not receive an IBAT plot. The battery voltage in the plot shows 3.0 V, while the reported value on the post is 3.7 V. Is the battery charging?

Please double check your STAT circuit. The waveform looks incorrect. What does the PG/ pin look like?

Does this happen on multiple units? If there are good units, please perform an ABA swap. This means to take the bad unit and put it on a good board, to take the good unit and put it on the bad board; this will aid in debug.

Regards,

Mike Emanuel