Patent ID: 6483376
Filing Date: 2002-11-19
Classification: H02M,H03K

Abstract:
A potential generation circuit of charge pump type, this circuit including at least two stages formed of capacitors and of means having a first operating state for isolating the capacitors of said stages and a second operating state for interconnecting the capacitors of said stages, to generate an output potential by charge transfer between the stages,the circuit being driven by at least two control potentials, each of the capacitors receiving a respective one of the control potentials on a first pole, the two control potentials oscillating between a first value and a second value so that they control, on the one hand, a charge phase of the capacitors when they switch from the first value to the second value and, on the other hand, a discharge phase of the capacitors when they switch from the second value to the first value, the circuit including a self-oscillating control circuit to generate, on outputs, the control potentials, the control circuit receiving the control potentials on inputs and being arranged so that these control potentials be modified when they reach the first or the second value.