ZHCSJI6 March 2019 TPS65653-Q1
PRODUCT PREVIEW Information. Product in design phase of development. Subject to change or discontinuance without notice.
In addition to the interrupt-based indication of the current limit and the Power-Good level the TPS65653-Q1 device supports monitoring with PGOOD signal:
Regulator output voltage monitoring (not current limit monitoring) can be selected for PGOOD indication. This selection is individual for both buck regulators and is set by EN_PGOOD_BUCKx bits in PGOOD_CTRL_1 register. When a regulator is disabled, the monitoring is automatically masked to prevent it forcing PGOOD inactive. A thermal warning can be also selected for PGOOD indication with EN_PGOOD_TWARN bit in PGOOD_CTRL_2 register. The monitoring from all the output rails, thermal warning (TDIE_WARN_STAT), input overvoltage interrupt (OVP_INT), and thermal shutdown interrupt (TDIE_SD_INT) are combined, and PGOOD pin is active only if all the selected sources shows a valid status.
The type of output voltage monitoring for PGOOD signal is selected by PGOOD_WINDOW_x bits in PGOOD_CTRL_1 register. If the bit is 0, only undervoltage is monitored; if the bit is 1, both undervoltage and overvoltage are monitored.
The polarity and the output type (push-pull or open-drain) are selected by the PGOOD_POL and PGOOD_OD bits in the PGOOD_CTRL_1 register.
PGOOD is only active or asserted when all enabled power resource output voltages are within specified tolerance for each requested/programmed output voltage.
PGOOD is inactive or de-asserted if any enabled power resource output voltages is outside specified tolerance for each requested/programmed output voltage.
The device OTP setting selects either gated (that is, unusual) or continuous (that is, invalid) mode of operation.