On-chip power management
AssigneeSTMicroelectronics Pvt. Ltd.
InventorNitin Bansal
Life of this patent
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Abstract
The present disclosure teaches a power management device for providing one or more voltages and prohibiting the operation until the IC is initialized and voltage stability is achieved. The power management device includes a power regulator block and a masking block. The power regulator block includes one or more of the following elements: -a regulator, a bandgap reference generator, a low voltage detector LVDD, a low voltage detector LVDM, and a plurality of logic gates. In one embodiment, the masking block includes one or more level shifters, a plurality of logic gates, a D flip-flop, and a power on reset circuit (PoR).
Claims20
A system comprising a power management device, said power management device comprising:
- a power regulator block having its input coupled to an input power supply and its outputs providing one or more regulated power supply voltages, said power regulator block is configured to be enabled or disabled by one or more control signals;
- and
- a masking block having at least one input coupled to a digital signal and its outputs coupled to said control signals.
An integrated circuit comprising a power management device, said power management device comprising:
- a power regulator block having its input coupled to an input power supply and its outputs providing one or more regulated power supply voltages, said power regulator block capable of being enabled or disabled by one or more control signals;
- and
- a masking block having at least one input coupled to a digital signal and its outputs coupled to said control signals.
A power management device comprising:
- a power regulator block having its input coupled to an input power supply and its outputs providing one or more regulated power supply voltages, said power regulator block capable of being enabled or disabled by one or more control signals;
- and
- a masking block having at least one input coupled to a digital signal and its outputs coupled to said control signals.
A method for providing a stable regulated supply voltage, said method comprising:
- monitoring an input supply voltage;
- and
- disabling said regulated supply voltage whenever said input supply voltage is less than a predetermined level.
Dependencies are inferred from the claim text.