BQ21061无法充电

bo gao

Other Parts Discussed in Thread: BQ21061

我采用的贵司的BQ21061给设备充电，但是无法充电，电池为740mah，寄存器的设置值和读取值相同，初始化设置如下：

bq21061_register_write(BQ_MASK0_REG,0xDE); //CHARGE_DONE NOT MASK
bq21061_register_write(BQ_MASK1_REG,0xFF); //ALL MASK
bq21061_register_write(BQ_MASK2_REG,0x01); //ALL MASK
bq21061_register_write(BQ_MASK3_REG,0xFF); //ALL MASK
bq21061_register_write(BQ_VBAT_CTRL_REG,0x4B); //充电电压设置为4.35V
bq21061_register_write(BQ_ICHG_CTRL_REG,0x1E); //ICHG=75mA，0.1C充电，兼顾最低温度
bq21061_register_write(BQ_PCHRGCTRL_REG,0x94); //ICHARGE_RANGE=2.5MA,Pre-Charge Current=50MA
bq21061_register_write(BQ_TERMCTRL_REG,0x28); //截止电压为0.02C
// bq21061_register_write(BQ_BUVLO_REG,0x00); //Pre-charge:3.0V;Battery Over-Current Protection 1200mA;Battery UVLO Voltage 3.0V
bq21061_register_write(BQ_CHARGERCTRL0_REG,0x32); //TS function disabled;Recharge Voltage Threshold 200mA;Watchdog timer disabled;
// bq21061_register_write(BQ_CHARGERCTRL1_REG,0xC2); //VINDPM Level 4.6V;DPPM function enabled;
// bq21061_register_write(BQ_ILIMCTRL_REG,0x06); //Input Current Limit 500mA
bq21061_register_write(BQ_LDOCTRL_REG,0x30); //Disable LS/LDO
// bq21061_register_write(BQ_MRCTRL_REG,0x2A);
// bq21061_register_write(BQ_ICCTRL0_REG,0x10); //Enter Ship Mode when VIN is not valid and /MR is high
bq21061_register_write(BQ_ICCTRL1_REG,0x03); //PMID disconnected and pulled down.
// bq21061_register_write(BQ_ICCTRL2_REG,0xA0);

附件为充电电路。

充电时，通过监测电池上电量计的温度调整充电电流，该温度下，充电电流为370mA，设置如下：

case 3:
bq21061_register_write(BQ_ICCTRL2_REG,0x40);
bq21061_register_write(BQ_ICHG_CTRL_REG,0x94); //0.5C 370mA
// bq21061_register_write(BQ_TERMCTRL_REG,0x08); //关断电流0.02C

NRF_LOG_INFO("charge 350mA");