Power manager and power managing method for battery-powered application
First Claim
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1. A power manager for managing power for a battery-powered application, comprising:
- a circuit path for interconnecting a power source, a load, and a battery;
a controller, provided between (a) the power source and (b) the load and the battery, configured for controlling power delivery through the circuit path to the load and battery, the load and the battery sharing the power supplied from the controller,a first circuit configured for coupling a battery to the circuit path to charge the battery;
a second circuit configured for monitoring a voltage in the circuit path to detect whether the voltage exceeds both (1) a battery voltage plus a first reference and (2) a second reference; and
a third circuit configured for monitoring input current in the circuit path to detect whether the input current exceeds a current limit,wherein the controller is coupled to the second and third circuits, and configured to limit the power delivery in response to a voltage or current detection by the second and third circuits, respectively.
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Abstract
A power manager is configured to manage power for a battery-powered application. A power source, a load and a battery are interconnected through a circuit path. Power from the power source is provided to the load and battery by a switching regulator. Various implementations are presented.
44 Citations
11 Claims
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1. A power manager for managing power for a battery-powered application, comprising:
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a circuit path for interconnecting a power source, a load, and a battery; a controller, provided between (a) the power source and (b) the load and the battery, configured for controlling power delivery through the circuit path to the load and battery, the load and the battery sharing the power supplied from the controller, a first circuit configured for coupling a battery to the circuit path to charge the battery; a second circuit configured for monitoring a voltage in the circuit path to detect whether the voltage exceeds both (1) a battery voltage plus a first reference and (2) a second reference; and a third circuit configured for monitoring input current in the circuit path to detect whether the input current exceeds a current limit, wherein the controller is coupled to the second and third circuits, and configured to limit the power delivery in response to a voltage or current detection by the second and third circuits, respectively. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A power managing method for a battery-powered application, comprising the steps of:
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interconnecting a power source and a load through a circuit path to provide power from the power source to the load; coupling a battery to the circuit path through a circuit configured for charging the battery; controlling power delivery through the circuit path to the load and battery, the load and the battery sharing power delivered; monitoring a voltage in the circuit path to detect whether the voltage exceeds both (a) a battery voltage plus a first reference voltage and (b) a second reference voltage; and monitoring input current in the circuit path to detect whether the input current exceeds a current limit, wherein the power delivery controlling step includes monitoring the voltage monitoring step and the input current monitoring step, and limiting the power delivery in response to a voltage or current detection by the voltage monitoring and input current monitoring steps, respectively. - View Dependent Claims (11)
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Specification