Patent ID: 11901804
Assignee: REALTEK SEMICONDUCTOR CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 11:
12. A power supplying method, comprising:
receiving, by a first high-voltage switch, a first input voltage and generating, by the first high-voltage switch, a first node voltage at a source electrode of the first high-voltage switch;
receiving, by a second high-voltage switch, a second input voltage and generating, by the second high-voltage switch, a second node voltage at a source electrode of the second high-voltage switch; and
controlling, by a controller circuit, the first high-voltage switch, a first low-voltage switch, the second high-voltage switch, and a second low-voltage switch according to the first node voltage and the second node voltage such that an output voltage is outputted to an output terminal,
wherein the first low-voltage switch is coupled between the first high-voltage switch and the output terminal, and the second low-voltage switch is coupled between the second high-voltage switch and the output terminal;
wherein the controller circuit is electrically connected to the source electrode of the first high-voltage switch to receive the first node voltage;
wherein the controller circuit is electrically connected to the source electrode of the second high-voltage switch to receive the second node voltage;
wherein the power supplying method further comprises:
comparing, by a low-voltage comparator in the controller circuit, the first node voltage and the second node voltage to generate a comparison result signal;
controlling, by a low-voltage controller in the controller circuit, the first high-voltage switch, the first low-voltage switch, the second high-voltage switch, and the second low-voltage switch according to the comparison result signal or at least one enable signal; and
receiving, by an inverter in the controller circuit, a control signal and generating, by the inverter, an inversion control signal according to the control signal;
wherein the control signal is configured to control the first low-voltage switch, and the inversion control signal is configured to control the second low-voltage switch; and

wherein when the first node voltage is higher than the second node voltage and a difference between the first node voltage and the second node voltage is greater than a threshold voltage, the low-voltage comparator outputs the comparison result signal with a first logic value.