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US 8,410,770 B2Granted
Fast boost regulator
AssigneeTexas Instruments Incorporated
InventorJoseph D. Farley
Life of this patent
Estimating the term…
Abstract
A boost regulator that comprises a capacitor adapted to couple in parallel with a load, a switch coupled to the capacitor and to a diode, a comparator coupled to the load and receiving a reference voltage, and a circuit logic component that receives an output of the comparator and an output of a duty cycle signal generator. An output of the circuit logic component couples to the switch and is capable of activating and de-activating the switch.
Claims17
A voltage boost regulator, comprising:
- a capacitor adapted to couple in parallel with a load;
- a switch coupled to the capacitor and to a diode;
- a comparator coupled to the load and receiving a reference voltage;
- and
- a circuit logic component that receives an output of the comparator and an output of a duty cycle signal generator, wherein an output of the circuit logic component couples to the switch and is capable of activating and de-activating the switch;
- an OR gate that receives the output of the circuit logic component and also receives an output of a regulation pathway, and if either received output is asserted, the OR gate causes the switch to be de-activated.
3 more elements
A system, comprising:
- means for storing electrical charge, said means for storing coupled in parallel with a load, wherein the means for storing electrical charge comprises a capacitor, the means for comparing comprises a comparator, and the means for increasing is selected from the group consisting of an AND gate, an OR gate, a transistor driver, and a transistor;
- means for comparing a voltage across said means for storing with a threshold voltage, said means for comparing produces a comparison signal;
- and
- means for increasing said voltage across the means for storing when a duty cycle signal and said comparison signal have a common logic status.
1 more element
A method, comprising:
- comparing a voltage output by a voltage regulator with a reference voltage signal, the voltage regulator controlled by a transistor, wherein comparing comprises using a comparator and adjusting said transistor comprises using an AND gate, an OR gate and a transistor driver;
- and
- as a result of said comparison, adjusting said transistor when both a duty cycle clock signal is asserted and the voltage output by the voltage regulator is less than or equal to said reference voltage signal.
Dependencies are inferred from the claim text.