Power control circuit and power control method
AssigneeAcer Incorporated
InventorShang-Hui Chen
Life of this patent
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Abstract
A power control circuit and a power control method are provided. The power control circuit includes a battery unit, a power controller and a switch circuit. The power controller is configured to provide a control signal. The switch circuit is coupled between the battery unit and the power controller. The switch circuit includes a diode component. The diode component is configured to receive the control signal. The switch circuit is configured to cut off a power transmission path of the battery unit in response to a voltage difference between a first terminal and a second terminal of the diode component.
Claims8
A power control circuit, comprising:
- a battery unit;
- a power controller, configured to provide a control signal;
- and
- a switch circuit, coupled between the battery unit and the power controller,
- wherein the switch circuit comprises:
- a diode component, configured to receive the control signal;
- a first transistor, coupled between the diode component and the battery unit and configured to turn on or cut off the power transmission path of the battery unit;
- and
- a second transistor, coupled to the diode component and the first transistor and configured to detect to a voltage difference between a first terminal and a second terminal of the diode component,
- wherein the first transistor cuts off the power transmission path of the battery unit in response to the voltage difference.
A power control method, comprising:
- providing a control signal by a power controller to a switch circuit, wherein the switch circuit is coupled between a battery unit and the power controller the switch circuit comprises a diode component, a first transistor coupled between the diode component and the battery unit, and a second transistor coupled to the diode component and the first transistor;
- receiving the control signal by the diode component;
- detecting a voltage difference between a first terminal and a second terminal of the diode component by the second transistor;
- and
- cutting off a power transmission path of a battery unit by the first transistor in response to the voltage difference.
Dependencies are inferred from the claim text.