Patent ID: 8390365
Filing Date: 2013-03-05
Classification: G11C

Abstract:
1. A charge pump system for low-supply voltage including: a clock generator to generate a plurality of clock signals; a clock pump circuit coupled to said clock generator to generate high voltage, wherein said high voltage is less than a highest operational voltage in a low threshold voltage device; a level shifter coupled to said clock generator and said clock pump circuit to generate a plurality of HV (high voltage) clock signals, wherein voltage of a high level of said HV clock signals is equal to said high voltage; and a main pump circuit coupled to said clock generator and said level shifter to generate an output voltage, wherein said main pump circuit comprises a plurality of single pump circuits, and each of said single pump circuits is a single structure, wherein said single structure includes two pump capacitors coupled to said clock generator for receiving said clock signals, a gate-boost capacitor coupled to said level shifter for receiving said HV clock signals, and a pump stage circuit.