发明申请
US20120256681A1 CHARGE PUMP 有权
电荷泵

CHARGE PUMP
摘要:
A charge pump circuit comprises a first node, a second node, and at least one capacitance stage coupled between the first node and the second node. Capacitance stages of the at least one capacitance stage are coupled in series. A capacitance stage of the at least one capacitance stage includes a capacitive device and a voltage limiter coupled in parallel with the capacitor. The voltage limiter is configured to limit a voltage dropped across the capacitor. The capacitive device and the voltage limiter are configured such that a first current flowing through a first branch having the voltage limiter is more than a second current flowing through a second branch having the capacitive device.
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