JPS56168433A - Charge pump circuit - Google Patents

Charge pump circuit

Info

Publication number
JPS56168433A
JPS56168433A JP7239380A JP7239380A JPS56168433A JP S56168433 A JPS56168433 A JP S56168433A JP 7239380 A JP7239380 A JP 7239380A JP 7239380 A JP7239380 A JP 7239380A JP S56168433 A JPS56168433 A JP S56168433A
Authority
JP
Japan
Prior art keywords
voltage
fet1
fet2
potential
point
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP7239380A
Other languages
Japanese (ja)
Inventor
Toshiyuki Araki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP7239380A priority Critical patent/JPS56168433A/en
Publication of JPS56168433A publication Critical patent/JPS56168433A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/06—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider
    • H02M3/07—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode, e.g. charge pumps

Abstract

PURPOSE:To generate a voltage higher than the power supply voltage, by securing a simple switching control action in a voltage dividing circuit having a switching control function. CONSTITUTION:A gate signal AT2 and a gate signal AT1 are applied to FET1 and FET2 respectively to set both FET1 and FET2 under a conduction mode. Thus a capacitor C is charged by the potential at point B where the power supply voltage VCC applied to a voltage dividing circuit was divided. Then the potential of point A is set at H level when the signals AT1 and AT2 are set at H and L levels, respectively. At the same time, both FET1 and FET2 are cut off simultaneously. As a result, the potential at point B rises up since the output voltage VA of an inverter in added to the voltage charged to the capacitor C.
JP7239380A 1980-05-29 1980-05-29 Charge pump circuit Pending JPS56168433A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7239380A JPS56168433A (en) 1980-05-29 1980-05-29 Charge pump circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7239380A JPS56168433A (en) 1980-05-29 1980-05-29 Charge pump circuit

Publications (1)

Publication Number Publication Date
JPS56168433A true JPS56168433A (en) 1981-12-24

Family

ID=13487978

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7239380A Pending JPS56168433A (en) 1980-05-29 1980-05-29 Charge pump circuit

Country Status (1)

Country Link
JP (1) JPS56168433A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4805152A (en) * 1987-09-03 1989-02-14 National Semiconductor Corporation Refresh cell for a random access memory
JP2007300306A (en) * 2006-04-28 2007-11-15 Nippon Telegr & Teleph Corp <Ntt> Leak current reducing circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4805152A (en) * 1987-09-03 1989-02-14 National Semiconductor Corporation Refresh cell for a random access memory
JP2007300306A (en) * 2006-04-28 2007-11-15 Nippon Telegr & Teleph Corp <Ntt> Leak current reducing circuit

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