Patent ID: 6429723
Filing Date: 2002-08-06
Classification: H01L,H02M

Abstract:
A charge pump, comprising:a first capacitor coupled to a first signal source; a second capacitor coupled to a second signal source; a first n-channel field effect transistor comprising a first gate, a first drain coupled to the first capacitor, and a first source coupled to a first node; a first p-channel field effect transistor comprising a second source coupled to a second node, a second gate coupled to the second capacitor and to the first gate, and a second drain coupled to the first drain; a second n-channel field effect transistor comprising a third drain, a third source coupled to the first node, and a third gate coupled to the first capacitor; a second p-channel field effect transistor comprising a fourth source coupled to the second node, a fourth drain coupled to the second capacitor and to the third drain, and a fourth gate coupled to the third gate; a first resistor coupling the source of the first p-channel transistor to the second node; and a second resistor coupling the source of the second p-channel transistor to the second node.