Patent ID: 8797092
Filing Date: 2014-08-05
Classification: G11C,H02M

Abstract:
1. A circuit, comprising: a charge pump configured to generate a discharge current during a discharge phase; an evacuating circuit coupled to the generator circuit for evacuating the electric charge stored in the charge pump during a corresponding portion of the discharge phase, said evacuating circuit including a first discharge circuit branch and a second discharge circuit branch coupled to the charge pump such that the first discharge branch and the second discharge branch are cross coupled, said evacuating circuit being configured to cause an initial portion of the discharge current through the first discharge circuit branch, during the portion of the discharge phase of the corresponding circuit node, when the pump voltage of the charge pump is higher than a respective threshold, and a subsequent portion of the discharge current through the second discharge circuit branch when the pump voltage of the charge pump is lower than said respective threshold; wherein the first circuit branch includes a first transistor of a first type of conductivity and a second transistor of a second type of conductivity opposite to the first and is responsive to the subsequent portion of the discharge current from the second circuit branch.