SLVSB64I November 2011 – March 2018 TPS65217
A timer fault occurs if the battery voltage does not exceed the VLOWV voltage in the tPRECHG time during precharging. A timer fault also occurs if the battery current does not reach the ITERM current in fast charge before the safety timer expires. Fast-charge time is measured from the start of the fast-charge cycle.
The fault status is indicated by the CHTOUT and PCHTOUT bits in the CHGCONFIG0 register. Time-out faults are cleared and a new charge cycle is started when either the USB or AC supply is connected (rising edge of VUSB or VAC), the charger RESET bit is set to 1b in the CHGCONFIG1 register, or the battery voltage decreases to less than the recharge threshold (VRCH).