SLUSF28 November 2023 TPS546A24S
PRODUCTION DATA
When enabled by (02h) ON_OFF_CONFIG or (01h) OPERATION, the TPS546A24S implements (65h) TOFF_FALL command to force a controlled decrease of the output voltage from regulation to 0. There can be negative inductor current forced during the (65h) TOFF_FALL time to discharge the output voltage. The setting of (65h) TOFF_FALL of 0 ms means the unit to bring its output voltage down to 0 as quickly as possible, which results in an effective (65h) TOFF_FALL time of 0.5 ms. When disabled in the (02h) ON_OFF_CONFIG for the turnoff controlled by EN/UVLO pin or bit 6 of (01h) OPERATION if the regulator is turned off by (01h) OPERATION command, both high-side and low-side FET drivers are turned off immediately and the output voltage slew rate is controlled by the discharge from the external load.
This feature is disabled for EN/UVLO in (02h) ON_OFF_CONFIG by default.