POWER SUPPLY CIRCUIT AND CHARGING/DISCHARGING METHOD

Title:

POWER SUPPLY CIRCUIT AND CHARGING/DISCHARGING METHOD

Document Type and Number:

Japanese Patent JP2014087158

Kind Code:

A

Abstract:

To charge a load capacitor to a voltage higher than a power supply voltage, thereby efficiently recovering the energy thereof.

A power supply circuit is configured in such a way that when a load capacitor is charged, the load capacitor is charged by changing an ON/OFF ratio of switches SW1, SW2 using a DC-DC converter functioning as a step-up circuit, and boosting its voltage higher than a power supply voltage and stepwise, and that when a load capacitor is discharged, the charge of the load capacitor C is recovered stepwise by changing an ON/OFF ratio of the switches SW1, SW2 using the DC-DC converter functioning as a step-down circuit, and stepping down the voltage of the load capacitor C 1 to 2 times the power supply voltage, both ends inclusive.

Inventors:

NAKADA SHUNJI
MORIMURA HIROKI
MATSUDA YOSHIO

Application Number:

JP2012233759A

Publication Date:

May 12, 2014

Filing Date:

October 23, 2012

Export Citation:

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Assignee:

NIPPON TELEGRAPH & TELEPHONE
UNIV KANAZAWA

International Classes:

H02J7/00; H02M3/155

Attorney, Agent or Firm:

Furuya Fumio
Toshihide Mori

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