Other Parts Discussed in Thread: BQ27426, BQ24296
Hi,
my customer is using BQ24259 to charge one cell battery, they set ITERM[2-0]= 001 which means the charge will terminate at 256mA.
They've monitored the charge current through our gauge BQ27426, find that the charge terminate when the current is about 400mA. And they've also monitored the current with multimeter, and it also shows that the charge current is about 400mA when the charge process terminate.
They've test several pieces and all of them behave the same.
The STAT pin is not used, so we've checked the register log file. No error status register bit is set during the process.
When the battery is charging the registers are shown below:
[ 968.084633] [bq24296_read_interface,249] Reg[0]=0x46
[ 968.084958] [bq24296_read_interface,249] Reg[1]=0x1b
[ 968.085276] [bq24296_read_interface,249] Reg[2]=0x40
[ 968.085600] [bq24296_read_interface,249] Reg[3]=0x11
[ 968.085920] [bq24296_read_interface,249] Reg[4]=0xb0
[ 968.086183] [bq24296_read_interface,249] Reg[5]=0x8a
[ 968.086454] [bq24296_read_interface,249] Reg[6]=0xc3
[ 968.086757] [bq24296_read_interface,249] Reg[7]=0x4b
[ 968.087044] [bq24296_read_interface,249] Reg[8]=0x64
[ 968.087331] [bq24296_read_interface,249] Reg[9]=0x0
when the charge process terminate the registers are shown below:
[ 1010.095734] [bq24296_read_interface,249] Reg[0]=0x46
[ 1010.096057] [bq24296_read_interface,249] Reg[1]=0x1b
[ 1010.096346] [bq24296_read_interface,249] Reg[2]=0x40
[ 1010.096635] [bq24296_read_interface,249] Reg[3]=0x11
[ 1010.096926] [bq24296_read_interface,249] Reg[4]=0xb0
[ 1010.097215] [bq24296_read_interface,249] Reg[5]=0x8a
[ 1010.097504] [bq24296_read_interface,249] Reg[6]=0xc3
[ 1010.097795] [bq24296_read_interface,249] Reg[7]=0x4b
[ 1010.098169] [bq24296_read_interface,249] Reg[8]=0x74
[ 1010.098459] [bq24296_read_interface,249] Reg[9]=0x0
Could you please give any insight about this problem.
