Devices and methods for operating a charge pump
AssigneeSkyworks Solutions, Inc.
InventorsBo Zhou, Guillaume Alexandre Blin
Life of this patent
Estimating the term…
Abstract
Devices and methods for operating a charge pump. In some implementations, a charge pump module includes a clock circuit configured generate to a first clock signal and a second clock signal, the first clock signal having a lower frequency than the second clock signal. The charge pump module also includes a driving circuit configured to generate a first set of clock signals based on the first clock signal and a second set of clock signals based on the second clock signal, the driving circuit coupled to the clock circuit. The charge pump module further includes a charge pump core including a set of capacitances, the charge pump core configured to charge the set of capacitances based on the first set of clock signals and the second set of clock signals.
Claims20
A charge pump module comprising:
- a clock circuit configured to generate a first clock signal in response to receiving a first control signal and a second clock signal in response to receiving a second control signal, the first clock signal having a different frequency from the second clock signal, the clock circuit coupled to an output of a comparator, the comparator including a first input provided with a voltage representative of a single input voltage of the charge pump module that is used to generate an output voltage of the charge pump module and a second input provided with a voltage of the single input voltage through a timing capacitance such that the clock circuit is provided with the first control signal when the voltage of the first input is less than the voltage of the second input and the clock circuit is provided with the second control signal when the voltage of the first input is equal to or greater than the voltage of the second input;
- a driving circuit configured to generate a first set of clock signals based on the first clock signal and a second set of clock signals based on the second clock signal, the driving circuit coupled to the clock circuit;
- and
- a charge pump core including a set of capacitances, the charge pump core configured to charge the set of capacitances based on the first set of clock signals and the second set of clock signals.
A method comprising:
- generating a first clock signal in response to receiving a first control signal using a clock circuit coupled to an output of a comparator;
- charging a set of capacitances of a charge pump module based on the first clock signal;
- generating a second clock signal in response to receiving a second control signal using the clock circuit, the second clock signal having a different frequency from the first clock signal, the comparator including a first input provided with a voltage representative of a single input voltage of the charge pump module that is used to generate an output voltage of the charge pump module and a second input provided with a voltage of the single input voltage through a timing capacitance such that the clock circuit is provided with the first control signal when the voltage of the first input is less than the voltage of the second input and the clock circuit is provided with the second control signal when the voltage of the first input is equal to or greater than the voltage of the second input;
- and
- charging the set of capacitances of the charge pump module based on the second clock signal.
Dependencies are inferred from the claim text.