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US 12,001,257 B2Granted
Power management system with capacitor
AssigneeNXP USA, Inc.
InventorsVincent Aubineau, Michael Andreas Staudenmaier, Pierre Juste
Life of this patent
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Abstract
A power management system includes a capacitor, control logic configured to determine a wait time in response to a comparison of a voltage of the capacitor to a threshold voltage and to initiate a startup upon expiration of the wait time, and a control circuit configured to charge the capacitor, discharge the capacitor, and provide the voltage of the capacitor to the control logic.
Claims21
A power management system comprising:
- a capacitor;
- control logic configured to determine a wait time in response to a comparison of a voltage of the capacitor to a threshold voltage and to initiate a startup upon expiration of the wait time;
- and
- a control circuit configured to charge the capacitor, discharge the capacitor, and provide the voltage of the capacitor to the control logic, wherein the control circuit includes a discharge circuit, a charge circuit, and a trigger circuit.
1 more element
A method for power management, the method comprising:
- charging, once voltage rails of a Power Management Integrated Circuit (PMIC) are supplied, a capacitor with a voltage;
- performing, by the PMIC, a startup sequence after a power loss, wherein the startup sequence involves:
- comparing the voltage of the capacitor to a threshold voltage;
- determining a wait time of a startup of a system connected to the PMIC in response to the comparison, wherein the startup is a power-on reset of the system;
- and
- initiating the startup upon expiration of the wait time.
3 more elements
A Power Management Integrated Circuit (PMIC) comprising:
- control logic configured to determine after a power loss a wait time in response to a comparison of a voltage of a capacitor to a threshold voltage and to initiate a startup of a system connected to the PMIC upon expiration of the wait time, wherein the startup is a power-on reset of the system;
- and
- a control circuit configured to provide the voltage of the capacitor to the control logic.
Dependencies are inferred from the claim text.