Patent ID: 7046074

Claim:
An internal voltage generator for generating an internal voltage for a semiconductor device, the internal voltage generator comprising: a comparator receiving a reference voltage through its first input terminal, receiving the internal voltage through its second input terminal, comparing the reference voltage with the internal voltage, and producing an output signal at an output terminal; a driving transistor receiving the output signal from the comparator through its gate terminal, a first terminal of which being coupled to a driving voltage, a second terminal of which being an output terminal for outputting the internal voltage, the output terminal of the driving transistor also being coupled to the second input terminal of the comparator, the driving transistor further having a well region; a back bias circuit supplying either the driving voltage or a first back bias voltage to the well region of the driving transistor; and a controller receiving the output signal from the comparator at a first input and receiving a standby signal at a second input, and controlling the operation of the back bias circuit to apply the driving voltage to the well region of the driving transistor when the internal voltage is less than the reference voltage and to apply the first back bias voltage to the well region of the driving transistor when the internal voltage exceeds the reference voltage.