Power supply adjusting circuit and a semiconductor device using the same
AssigneeFujitsu Limited
InventorsKoichi Nishimura, Toshiya Uchida
Life of this patent
Estimating the term…
Abstract
A power supply adjusting circuit includes a reference voltage supplying part generating a reference voltage based on an external voltage, a plurality of internal voltage generating parts generating a plurality of respective internal voltages based on the reference voltage, and a plurality of control parts corresponding to the internal voltage generating parts, respectively, so as to be able to separately control the internal voltages.
Claims11
A power supply adjusting circuit comprising:
- a reference voltage supplying part generating a reference voltage based on an external voltage;
- a plurality of internal voltage generating parts generating a plurality of respective internal voltages based on said reference voltage, said plurality of respective internal voltages being separate from each other;
- and
- a plurality of control parts corresponding to said internal voltage generating parts, respectively, so as to be able to separately control said internal voltages.
A power supply adjusting circuit comprising:
- a first internal voltage generating part generating a first internal voltage based on an external voltage;
- a second internal voltage generating part generating a second internal voltage based on said first internal voltage;
- a third internal voltage generating part generating a third internal voltage based on said first internal voltage;
- a first control part controlling said first internal voltage;
- and
- a second control part controlling said third internal voltage,
- wherein said first internal voltage, said second internal voltage and said third internal voltage are separate from each other.
A semiconductor device comprising a power supply adjusting circuit, said power supply adjusting circuit including:
- a reference voltage supplying part generating a reference voltage based on an external voltage;
- a plurality of internal voltage generating parts generating a plurality of respective internal voltages based on said reference voltage, said plurality of respective internal voltages being separate from each other;
- and
- a plurality of control parts corresponding to said internal voltage generating parts, respectively, so as to be able to separately control said internal voltages;
- wherein at least one of said plurality of internal voltage generating parts generates an internal step-up power supply voltage.
Dependencies are inferred from the claim text.