Fast-charging voltage generator
AssigneeRichWave Technology Corp.
InventorsChih-Sheng Chen, Tien-Yun Peng, Hsien-Huang Tsai
Life of this patent
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Abstract
A voltage generator includes an oscillator, a charge pump, a smoothing capacitor, and a driving controller. The oscillator has an output. The charge pump has an input and an output, and the input of the charge pump is coupled to the output of the oscillator. The smoothing capacitor is coupled to the output of the charge pump. The driving controller is coupled to the oscillator, and generates an enable signal to adjust an operation frequency of the oscillator. The voltage generator supplies a driving voltage to a switch for driving the switch via the smoothing capacitor. The driving controller generates the enable signal according to the driving voltage.
Claims20
A voltage generator, comprising:
- an oscillator having an output;
- a charge pump having an input and an output, the input of the charge pump being coupled to the output of the oscillator;
- a smoothing capacitor coupled to the output of the charge pump;
- and
- a driving controller coupled to the oscillator, and configured to generate an enable signal to adjust an operation frequency of the oscillator;
- wherein:
- the voltage generator is configured to supply a driving voltage to a switch for driving the switch via the smoothing capacitor;
- and
- the driving controller generates the enable signal according to the driving voltage.
A voltage generator, comprising:
- an oscillator having an output;
- a charge pump having an input and an output, the input of the charge pump being coupled to the output of the oscillator;
- a smoothing capacitor coupled to the output of the charge pump;
- and
- a driving controller coupled to the oscillator, and configured to generate an enable signal to adjust an operation frequency of the oscillator;
- wherein:
- the voltage generator is configured to supply a driving voltage to a RF switch for driving the switch via the smoothing capacitor;
- and
- during a switching period of the RF switch, the driving controller generates the enable signal according to the driving voltage so that the operation frequency of the oscillator is controlled to be faster.
A voltage generator, comprising:
- an oscillator having an output;
- a charge pump having an input and an output, the input of the charge pump being coupled to the output of the oscillator;
- a smoothing capacitor coupled to the output of the charge pump;
- and
- a driving controller coupled to the oscillator, and configured to generate an enable signal to adjust an operation frequency of the oscillator;
- wherein:
- the voltage generator is configured to supply a driving voltage to a circuit via the smoothing capacitor;
- and
- the driving controller generates the enable signal according to the driving voltage.
Dependencies are inferred from the claim text.