Patent ID: 7521983
Filing Date: 2009-04-21
Classification: G11C,H02M,H03K

Abstract:
1. A high-voltage switch, comprising: a high-voltage input terminal connected to a first reference-voltage line to receive a high voltage that is higher than a supply voltage to the switch; an output terminal; a pass transistor having a first conduction terminal connected to said high-voltage input terminal, a second conduction terminal connected to said output terminal, and a control terminal; a boosting stage having an output connected to said control terminal, and including a charge-pump, voltage-multiplying circuit; said voltage-multiplying circuit comprising first and second charge-storage elements, which receive a periodic clock signal; wherein said voltage-multiplying circuit includes a first circuit branch and a second circuit branch couplable to the output, which are symmetrical to one another and operate in phase opposition with respect to said clock signal; a driving input terminal connected to a second reference-voltage line; and a feedback transistor, connected between said driving input terminal and an input of said boosting stage and having a control terminal connected to said output of said boosting stage.