Voltage circuit for preventing voltage fluctuation
First Claim
Patent Images
1. A voltage circuit having first and second input terminals, an output terminal and first and second power terminals comprising:
- a first comparator having a first input connected to said first input terminal, a second input connected to said output terminal and a first output;
a second comparator having a third input connected to said second input terminal, a fourth input connected to said output terminal and a second output;
a first transistor connected between said output terminal and said first power terminal, said first transistor having a gate electrode connected to said first output; and
a second transistor connected between said output terminal and said second power terminal, said second transistor having a gate electrode connected to said second output.
2 Assignments
0 Petitions
Accused Products
Abstract
A voltage circuit for a device having an active period and an inactive period comprises a reference voltage generator generating a reference voltage and a voltage stabilizer receiving the reference voltage. The voltage stabilizer includes first circuit componentry for raising a potential of an output terminal during the active period of the device and second circuit componentry for lowering a potential of the output terminal during at least the inactive period of the device.
65 Citations
15 Claims
-
1. A voltage circuit having first and second input terminals, an output terminal and first and second power terminals comprising:
-
a first comparator having a first input connected to said first input terminal, a second input connected to said output terminal and a first output; a second comparator having a third input connected to said second input terminal, a fourth input connected to said output terminal and a second output; a first transistor connected between said output terminal and said first power terminal, said first transistor having a gate electrode connected to said first output; and a second transistor connected between said output terminal and said second power terminal, said second transistor having a gate electrode connected to said second output. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A voltage circuit comprising a first reference voltage generator supplying a first reference voltage to a first reference terminal and a voltage stabilizer including first and second negative feedback loops, each of which is connected between said first reference terminal and an output terminal to prevent said output terminal from having a potential lower than said first reference voltage, said first negative feedback loop having a first driving capacity, said second negative feedback loop having a second driving capacity smaller than said first driving capacity, and a third negative feedback loop connected between said first reference terminal and said output terminal to prevent said output terminal from having a potential higher than said first reference voltage, said third negative feedback loop having a third driving capacity smaller than said first driving capacity.
- 10. A voltage circuit comprising a first reference voltage generator supplying a first reference voltage to a first reference terminal and a voltage stabilizer including first and second negative feedback loops, each of which is connected between said first reference terminal and an output terminal to prevent said output terminal from having a potential lower than said first reference voltage, said first negative feedback loop having a first driving capacity, said second negative feedback loop having a second driving capacity smaller than said first driving capacity, and a second reference voltage generator supplying a second reference voltage different from said first reference voltage to a second reference terminal, wherein said voltage stabilizer further includes a third negative feedback loop connected between said second reference terminal and said output terminal to prevent said output terminal from having a potential higher than said second reference voltage.
-
14. A voltage circuit for stabilizing a voltage on a voltage line, comprising:
-
a comparator having a first input node supplied with said voltage on said voltage line, a second input node supplied with a reference voltage, and an output node; first and second power lines; a first transistor coupled between said voltage line and said first power line and having a control electrode coupled to said output node of said comparator; and a second transistor coupled between said voltage line and said second power line and having a control electrode coupled to said output node of said comparator. - View Dependent Claims (15)
-
Specification