调试BQ25710只能带动48W的负载。输入电流达到5.5A就被限制了,软件中IDPM设置为6400mA。BQ25710EVM-017评估板也是一样的情况,采样电阻用的是10毫欧,,请问怎么提高输入电流能力
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您好,附件是BQ25710的寄存器配置日志,请查收。对于限流有如下疑问:
* Created: Fri Feb 24 09:40:09 CST 2023 * * Format: Register Name tab Character,\t Hexadecimal register value. * Device: bq25710 * BQZ Container: Charger_1_00-bq25710.bqz * Charge Option 0 071F Charge Current Register 0BC0 Charge Voltage Register 3328 OTG Voltage Register 0000 OTG Current Register 0000 Input Voltage Register 0580 Minimum System Voltage 2400 Input Current Register 7F00 Charge Status Register 8000 Prochot Status Register A800 Input Current Limit In Use 7F00 VBUS and PSYS Voltage Read Back 9100 Charge and Discharge Current Read Back 0000 Input Current and CMPIN Voltage Read Back 0000 System and Battery Voltage Read Back 6301 Manufacture ID Read Back 0040 Device ID Read Back 0089 Charge Option 1 0250 Charge Option 2 021D Charge Option 3 0000 Prochot Option 0 4A65 Prochot Option 1 81A0 ADC Option A05F LOUT 0004
1. 调试发现寄存器ChargeOption3的Bit[4:3](IL_AVG)的设置对输入限流有影响。我之前调试是设置为0-6A,目前将IL_AVG调整为15A后输入限流正常了。请问IL_AVG的设置是否真的会影响器件的限流?
2. 如果我想要更大的输入电流,那么软件中RSNS_RAC设置为10 mΩ ,而硬件的实际采用电阻用5 mΩ ,这种方法是否可行?
3. IDPM这个功能是如何体现的?因为在调试过程中(不接电池)发现使能和禁用寄存器 ChargeOption0 的Bit1(EN_IDPM)对限流没有影响。