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{
"ticketNumber" : "890672",
"reporterName" : "reza nouriyan",
"rankPoints" : "100",
"resolutionStatus" : "TI Thinks Resolved",
"ticketName" : "BQ25713: Charger can’t charge continuously",
"rankName" : "Prodigy",
"replies" : " 6",
"views" : " 75",
"queryText" : "Part Number: BQ25713 Hi dear I am using BQ25713 in order to charge 4 cell battery with 5v USB power banks All default values of registers are fine to me. I just want to charge cells with 1.2 ampere and be able to charge again when adapter is removed and plugged again. I just set my desired current to 0x02 and 0x03 and charger starts to charge but after less than a second charger stops charging. Here are my questions: 1) i was not able to do previously described procedure with 5v USB power bank and i did it with power supply. Why is that ? As i understood charger had to set all offsets and initializes with respect to input voltage without help of host. So why it didn’t charge cells with 5v? 2) did i something wrong to charge with 1.2A ? And why charger stops charging fast",
"partNumber" : " BQ25713",
"allResponseList" : [ {
"contentId" : "3293324",
"userName" : "reza nouriyan",
"rankPoints" : "100",
"rankName" : "Prodigy",
"date" : "Mar 21, 2020 9:26 PM",
"userId" : "5241641",
"content" : "When i put charge current at almost 100mA it works but for greater currents charger stops charging in less than a second"
}, {
"contentId" : "3293350",
"userName" : "reza nouriyan",
"rankPoints" : "100",
"rankName" : "Prodigy",
"date" : "Mar 22, 2020 2:47 AM",
"userId" : "5241641",
"content" : "Please take into account that i didn’t change any register after POR and just updated charge current register. I assumed that charger will update input voltage and current limit registers automatically when an adapter plugged vmax charge and vmin sys default values are ok to me. Is there a way to disable DPM mode that decrease charge current to give priority to system load. Because i think problem is related to this issue. But on the other hand i am testing IC at no load so there is no load to draw current from VSYS. I am completely confused Please help"
}, {
"contentId" : "3294086",
"userName" : "Joel Hernandez II",
"rankPoints" : "25800",
"rankName" : "Mastermind",
"date" : "Mar 23, 2020 2:05 PM",
"userId" : "4615895",
"content" : "Hey Reza, We need a register dump the moment before and the moment after the charger stops charging. A waveform is also necessary, showing VBUS, IBUS, SW2, and VSRN. Regards, Joel H"
}, {
"contentId" : "3295242",
"userName" : "reza nouriyan",
"rankPoints" : "100",
"rankName" : "Prodigy",
"date" : "Mar 24, 2020 10:17 AM",
"userId" : "5241641",
"content" : "Dear Joel hi, thanks for reply unfortunately i am not able to check waveform and share with you but i have found out that when i write some values to charge current register BQ doesn't charge batteries but for some other values it starts charging but also in this way charging current is not same as i wrote it. which registers do you want to know before and after. just let me know thanks again best regards"
}, {
"contentId" : "3298018",
"userName" : "Joel Hernandez II",
"rankPoints" : "25800",
"rankName" : "Mastermind",
"date" : "Mar 26, 2020 2:15 PM",
"userId" : "4615895",
"content" : "Hey reza, I would like to see all charger registers before an after. Regards, Joel H"
}, {
"contentId" : "3322715",
"userName" : "Peter Sammer",
"rankPoints" : "10",
"rankName" : "Prodigy",
"date" : "Apr 21, 2020 12:31 PM",
"userId" : "3983126",
"content" : "Hi! Check the watchdog timer in ChargeOption0 register (I2C address = 01/00h) - WDTMR_ADJ. The default setting stops charging after 175s without repeatedly sending the charge current. You can disable the watchdog by setting 00 for bits 6-5 - then the charging will not stop when you don't send the current register. Best, P"
} ],
"tags" : [ "/support/power-management/f/196/tags/BQ25713" ],
"fourmType" : "TI"
} |