| 摘要 |
Provided is a method of operating a charge-pump, which may be implemented in IC devices such as digital signal processors (DSPs) and mixed signal analog circuits. The method includes the steps of charging a first capacitor, and then choosing between two switching sequences based on the relative values of the input voltage and the output voltage. When the input voltage is determined to be greater than the output voltage, the method applies a first switching sequence to discharge the first capacitor into a second capacitor by first partially discharging the first capacitor into the second capacitor, then fully discharging the first capacitor into the second capacitor. When the input voltage is determined to be less than or equal to the output voltage, the method uses a second switching sequence to prevent the discharge of the second capacitor into the first capacitor by electrically isolating the first capacitor.
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