Patent ID: 7642838
Filing Date: 2010-01-05
Classification: H02M

Abstract:
1. A voltage redoubling circuit, comprising: a voltage-detecting unit for receiving a first signal and outputting a second signal; an oscillating unit, coupled to said voltage-detecting unit for receiving said second signal; an inversing unit, coupled to said voltage-detecting unit for receiving said second signal and to output an inversed signal; a first switching device having a first source, a first drain, and a first gate, wherein said first gate is coupled to said inversing unit for receiving said inversed signal; a second switching device having a second source, a second drain, and a second gate, wherein said second gate coupled to said inversing unit for receiving said inversed signal; a third switching device having a third source, a third drain, and a third gate, wherein said third gate coupled to said first drain and said second drain; a fourth switching device having a fourth drain, a fourth source, and a fourth gate, wherein said fourth drain and said fourth source coupled to said oscillating unit, and said fourth gate coupled to said third source; and a fifth switching device having a fifth source, a fifth drain, and a fifth gate, wherein said fifth drain and said fifth gate are coupled to said third drain and fourth source.