| 摘要 |
A charge pump circuit provides an output voltage greater than a supply voltage of the charge pump circuit. The charge pump circuit has a first and a second charge storage device driven and connected up to one another such that the output voltage is higher than the dielectric strength of the individual capacitors. Switching devices are alternately switched on and off dependent on a high-frequency signal, so that the first charge storage device is charged during a first clock phase and the charge of the first charge storage device is transferred to the second charge storage device during a second clock phase. The charge pump circuit is distinguished by a low current demand, high output voltages and the provision of an output voltage with a low internal resistance. In a preferred embodiment, the switching devices have bipolar transistors, equipped with anti-saturation circuits.
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