ZHCS089G February 2011 – September 2017 TPS65185
PRODUCTION DATA.
The TPS65185x monitors input/output voltages and die temperature. The device will take action if operating conditions are outside normal limits when the following is encountered:
it shuts down all power rails and enters STANDBY mode. Shut-down follows the order defined by DWNSEQx registers. The exception is VCOM fault witch leads to immediate shutdown of all rails. Once a fault is detected, the PWR_GOOD and nINT pins are pulled low and the corresponding interrupt bit is set in the interrupt register. Power rails cannot be re-enabled unless the interrupt bits have been cleared by reading the INT1 and INT2 register. Alternatively, toggling the WAKEUP pin also resets the interrupt bits. As the PWRUP input is edge sensitive, the host must toggle the PWRUP pin to re-enable the rails through GPIO control, i.e. it must bring the PWRUP pin low before asserting it again. Alternatively rails can be re-enabled through the I2C interface.
Whenever the TPS65185x encounters undervoltage on VNEG (VNEG_UV), VPOS (VPOS_UV), VEE (VEE_UV) or VDDH (VDDH_UV), rails are not shut down but the PWR_GOOD and nINT is pulled low with the corresponding interrupt bit set. The device remains in ACTIVE mode and recovers automatically once the fault has been removed.