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bq24630 not working

user4219231
Prodigy 10 points
Other Parts Discussed in Thread: BQ24630

hi,all.Recently the use of bq24630, there are several issues have not been resolved.

first,When I did not insert the battery,Open only 19v input power, output voltage has 6V. If I insert the battery voltage is higher than 6V, the system is not working properly.But lower than 6v, normal charging.Waveform follows

second,When the battery is not only open access 19v input power,state 1 is displayed as ON, but it does not meet my conditions.

CH1:upper nmos  Vgs       CH2:btttom nmos Vgs        CH3:No-load output voltage of the battery terminal   CH4:Inductor current

  • 0
    TI__Expert 5565 points
    Are you using the bq24630 EVM for your evaluation? If not, could you share the schematic of your circuit?

    What are the input conditions for the waveform you provided? What is the battery charge voltage set to? Any additional information would be helpful.