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US 6,249,445 B1Granted
Booster including charge pumping circuit with its electric power consumption reduced and method of operating the same
AssigneeNEC Corporation
InventorYasuo Sugasawa
Life of this patent
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Abstract
A booster is composed of a switching circuit outputting a clock signal and a charge pumping circuit boosting an input voltage to generate an output voltage in response to the clock signal. The switching circuit selects one from among frequencies as a frequency of the clock signal in response to the output voltage.
Claims21
A booster comprising:
- a switching circuit outputting a clock signal;
- and
- a charge pumping circuit boosting an input voltage to generate an output voltage in response to said clock signal, wherein said switching circuit selects one from among a plurality of frequencies as a frequency of said clock signal in response to said output voltage and at least two reference voltages.
A method of operating a booster with a charge pumping circuit comprising:
- selecting one from among a plurality of frequencies as a frequency of a clock signal;
- generating said clock signal having said frequency;
- and
- boosting an input voltage to generate an output voltage in response to said clock signal, wherein said selecting is performed in response to said output voltage and at least two reference voltages.
1 more element
Dependencies are inferred from the claim text.