Voltage generating circuit
AssigneePanasonic Corporation
InventorTomokazu KOJIMA
Life of this patent
Estimating the term…
Abstract
A voltage generating circuit according to the present invention comprises a voltage converter which voltage-converts a reference voltage, and an output unit which impedance-converts the voltage outputted from the voltage converter. The voltage converter and the output unit each comprise a low-voltage-side power supply and a high-voltage-side power supply. A voltage level of the high-voltage-side power supply in the output unit is set to be higher than a voltage level of the high-voltage-side power supply in the voltage converter.
Claims48
A voltage generating circuit comprising:
- a voltage converter for voltage-converting a reference voltage;
- and
- an output unit for impedance-converting the voltage outputted from the voltage converter, wherein
- a low-voltage-side power supply and a high-voltage-side power supply are connected to each of the voltage converter and the output unit, and
- a voltage level of the high-voltage-side power supply in the output unit is set to be higher than a voltage level of the high-voltage-side power supply in the voltage converter.
A voltage generating circuit comprising:
- a voltage converter for voltage-converting a reference voltage;
- and
- an output unit for impedance-converting the voltage outputted from the voltage converter, wherein
- a low-voltage-side power supply and a high-voltage-side power supply are connected to each of the voltage converter and the output unit,
- a voltage difference between the high-voltage-side power supply and the low-voltage-side power supply in the voltage converter is set to be equal to or smaller than a voltage difference between the high-voltage-side power supply and the low-voltage-side power supply in the output unit, and
- a dielectric breakdown voltage of the voltage converter is set to be equal to or smaller than a dielectric breakdown voltage of the output unit.
A voltage generating circuit comprising:
- a voltage converter for voltage-converting a reference voltage;
- and
- an output unit for impedance-converting the voltage outputted from the voltage converter, wherein
- a low-voltage-side power supply and a high-voltage-side power supply are connected to each of the voltage converter and the output unit,
- a voltage difference between the high-voltage-side power supply and the low-voltage-side power supply in the voltage converter is set to be higher than a voltage difference between the high-voltage-side power supply and the low-voltage-side power supply in the output unit, and
- a dielectric breakdown voltage of the voltage converter is set to be higher than a dielectric breakdown voltage of the output unit.
A voltage generating circuit comprising:
- a voltage converter for voltage-converting a reference voltage;
- and
- an output unit for impedance-converting the voltage outputted from the voltage converter, wherein
- a low-voltage-side power supply and a high-voltage-side power supply are connected to the voltage converter,
- the output unit comprises a plurality of first operational amplifiers,
- at least a low-voltage-side power supply and at least a high-voltage-side power supply are connected to the first operational amplifier,
- output voltages of the high-voltage-side power supply and the low-voltage-side power supply in the first operational amplifier are set to stay within a voltage difference range between a voltage higher than an output voltage of the high-voltage-side power supply in the voltage converter and a voltage lower than an output voltage of the low-voltage-side power supply in the voltage converter, and
- a dielectric breakdown voltage of the output unit is set to be equal to or lower than a dielectric breakdown voltage of the voltage converter.
Dependencies are inferred from the claim text.