Patent ID: 11923762
Assignee: TEXAS INSTRUMENTS INCORPORATED
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 15:
16. A system comprising:
a main power supply having a supply output, the main power supply configured to provide a supply voltage at the supply output;
a power converter comprising:
an output stage including high-side and low-side switches coupled between a supply terminal and a ground terminal, each of the high-side and low-side switches coupled to a switch output terminal, and the supply terminal coupled to the supply output; and
a controller configured to provide high-side and low-side control signals to operate the output stage to provide a regulated voltage at a feedback terminal responsive to an operating state of the controller, wherein the controller is configured to enable a direct transition from an intermediate state, in which the high-side switch is off, to a high-side on (HSON) state, in which the high-side control signal is provided to turn on the high-side switch, responsive to the supply voltage being less than a low supply voltage threshold;

an inductor or resistor coupled between the switch output terminal and the feedback terminal;
a capacitor coupled between the feedback terminal and the ground terminal;
a current limit comparator configured to provide a current comparator output signal to the controller responsive to a comparison of a signal representative of current through the high-side switch and a current limit threshold;
a switch comparator configured to provide a switch comparator output signal to the controller responsive to a comparison of a signal representative of the voltage at the switch output terminal and a switch reference voltage; and
a feedback comparator configured to provide a feedback comparator output signal to the controller responsive to a comparison of a signal representative of a regulated voltage and a regulated voltage threshold.