SLVSES4D September 2019 – June 2024 TPS54J060
PRODUCTION DATA
The device has a power-good output that indicates high when the converter output is within the target. The power-good output is an open-drain output and must be pulled up externally through a pullup resistor (usually 10 kΩ). The recommended power-good pullup resistor value is 1 kΩ to 100 kΩ. The power-good function is activated after the soft-start operation is complete.
During start-up, PGOOD transitions HIGH after soft start is complete and the output is between the UV and OV thresholds. If the FB voltage drops to 80% of the VINTREF voltage or exceeds 116% of the VINTREF voltage, the power-good signal latches low after a 5-µs internal delay. When using an external reference, the power-good thresholds are based on the external reference voltage. The power-good signal can only be pulled high again after re-toggling EN or a reset of VCC.
If the input supply fails to power up the device, the power-good signal clamps low by itself when PGOOD is pulled up through an external resistor.