HI Sirs
Can I change the precharge current when Vbat<3V ?
because 470mA precharge current is too high for our customer,
Is there any hardware solution can modify the precharge current?
thanks a lot.
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HI Sirs
Can I change the precharge current when Vbat<3V ?
because 470mA precharge current is too high for our customer,
Is there any hardware solution can modify the precharge current?
thanks a lot.
Hi Logan,
Precharge current is fixed to 470 mA when a dedicated USB charging port is detected. If a USB charging port is not detected, it will limit to 92 mA. Charging port is detected by the USB PHY (external to the TWL6030) and the information is relayed to TWL6030 by the CHRG_DET_N pin. As long as the CHRG_DET_N pin does not indicate a charging port (polarity is OTP dependent, but TWL6030B107 for example is low to limit to 92 mA), then current would be limited.
It will effect all charging though, not just precharge.