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AssigneeTexas Instruments Incorporated
InventorsSomshubhra Paul, Bhaskar Ramachandran, Srinivasan Venkataraman
Estimating the term…
A single sleep mode controller which ensures that there is at least a corresponding minimum voltage level across capacitors when the corresponding regulators are turned off. In an embodiment, the sleep mode controller uses a single comparator which compares the voltages across capacitors in a time division multiplexed (TDM) manner, and initiates the charging operation for the capacitor if the voltage level falls below a corresponding minimum voltage level. The sleep mode controller continues the charging operation until the voltage level exceeds a corresponding upper threshold value. Due to the use of the single controller, power and/or space savings may be attained.
A system comprising:
A sleep mode controller maintaining a desired energy level across each of a plurality of energy storage elements, each of said plurality of energy storage elements providing energy to a corresponding one of a plurality of components in a sleep mode operation, wherein said reference generator comprises a bandgap reference generating a reference voltage and a reference current, said single comparator comparing said reference voltage with a voltage level present across one of said capacitors, said sleep mode controller comprising:
Dependencies are inferred from the claim text.