Internal voltage generator and integrated circuit device including the same
AssigneeSamsung Electronics Co., Ltd.
InventorsHo-Seok Seol, Seung-Jun Bae
Life of this patent
Estimating the term…
Abstract
An internal voltage generator includes a comparison unit, a driving circuit and a bias unit. The comparison unit compares a reference voltage and an internal voltage and is configured to output a comparison voltage, which is based on a difference between the reference voltage and the internal voltage. The driving circuit receives the comparison voltage and an external power supply voltage and is configured to output the internal voltage to an output node in response to the comparison voltage. The bias unit receives the internal voltage and is configured to adaptively adjust a bias current that flows through the bias unit to drive the comparison unit, in consideration of a level of the internal voltage.
Claims20
An internal voltage generator for a semiconductor memory device, the internal voltage generator comprising:
- a comparison unit for comparing a reference voltage and an internal voltage, the comparison unit being configured to output a comparison voltage based on a difference between the reference voltage and the internal voltage;
- a driving circuit which receives the comparison voltage and an external power supply voltage, the driving circuit being configured to output the internal voltage to an output node in response to the comparison voltage;
- and
- a bias unit which receives the internal voltage and through which a bias current flows, the bias unit being configured to adaptively adjust the bias current to drive the comparison unit, in consideration of a level of the internal voltage.
An internal voltage generator for a semiconductor memory device, the internal voltage generator comprising:
- a comparison unit for comparing one of a plurality of internal voltages and a reference voltage, the comparison unit being configured to output a comparison voltage based on a difference between the one of the plurality of internal voltages and the reference voltage;
- a driving circuit which receives an external power supply voltage and the comparison voltage, the driving circuit being configured to selectively generate one of the internal voltages to be provided to an internal circuit in response to a control signal;
- a selection unit which receives the internal voltages, the selection unit being configured to select one of the internal voltages in response to the control signal, the selected one of the internal voltages being provided to the internal circuit as a selected internal voltage;
- and
- a bias unit which receives the selected internal voltage, the bias unit being configured to adaptively adjust a bias current to drive the comparison unit in consideration of a level of the selected internal voltage.
An integrated circuit device, comprising:
- an internal voltage generator circuit for generating an internal voltage, the internal voltage generator circuit comprising:
- a comparison unit for comparing a reference voltage and the internal voltage, the comparison unit being configured to output a comparison voltage based on a difference between the reference voltage and the internal voltage,
- a driving circuit which receives the comparison voltage and an external power supply voltage, the driving circuit being configured to output the internal voltage to an output node in response to the comparison voltage, and
- a bias unit which receives the internal voltage and through which a bias current flows, the bias unit being configured to adaptively adjust the bias current to drive the comparison unit, in consideration of a level of the internal voltage;
- and
- an internal circuit receiving the internal voltage and using the internal voltage as an operating voltage.
Dependencies are inferred from the claim text.