JPS5797361A - Voltage step-down circuit - Google Patents

Voltage step-down circuit

Info

Publication number
JPS5797361A
JPS5797361A JP17153980A JP17153980A JPS5797361A JP S5797361 A JPS5797361 A JP S5797361A JP 17153980 A JP17153980 A JP 17153980A JP 17153980 A JP17153980 A JP 17153980A JP S5797361 A JPS5797361 A JP S5797361A
Authority
JP
Japan
Prior art keywords
switching element
capacitors
capacitor
diode
voltage
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
JP17153980A
Other languages
Japanese (ja)
Inventor
Takaharu Miyazaki
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP17153980A priority Critical patent/JPS5797361A/en
Publication of JPS5797361A publication Critical patent/JPS5797361A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Rectifiers (AREA)
  • Dc-Dc Converters (AREA)

Abstract

PURPOSE:To obtain a step-down voltage by connecting a diode or a switching element in parallel with a series circuit of the capacitor and the diode of a series circuit having switching elements, capacitors and diodes. CONSTITUTION:Capacitors C1, C2 are respectively charged by voltages inputted from input terminals 1a, 1b through the first switching element S1, the second capacitor C2, the first diode D1 and the first capacitor C1 when the first switching element S1 is closed and the second switching element S2 is opened. When the first switching element S1 is then opened and the second switching element S2 is closed, the first and second capacitors C1, C2 equally charged are connected in parallel with output terminals 2a, 2b, thereby obtaining a voltage being stepped down by 1/2 of the input voltage.
JP17153980A 1980-12-05 1980-12-05 Voltage step-down circuit Pending JPS5797361A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17153980A JPS5797361A (en) 1980-12-05 1980-12-05 Voltage step-down circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17153980A JPS5797361A (en) 1980-12-05 1980-12-05 Voltage step-down circuit

Publications (1)

Publication Number Publication Date
JPS5797361A true JPS5797361A (en) 1982-06-17

Family

ID=15924994

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17153980A Pending JPS5797361A (en) 1980-12-05 1980-12-05 Voltage step-down circuit

Country Status (1)

Country Link
JP (1) JPS5797361A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62290352A (en) * 1986-04-10 1987-12-17 フィリップス　エレクトロニクス　ネムローゼ　フェンノートシャップ Dc voltage generating circuit
JPH01298953A (en) * 1988-05-26 1989-12-01 Matsushita Electric Ind Co Ltd Power source
EP1193848A1 (en) * 2000-09-21 2002-04-03 Thomson Licensing S.A. Cicuit arrangement comprising a switch mode power supply
WO2009041326A1 (en) * 2007-09-27 2009-04-02 Sanyo Electric Co., Ltd. Voltage conversion circuit
US20110038179A1 (en) * 2009-08-14 2011-02-17 Xiaoyang Zhang Power Converter Including a Charge Pump Employable in a Power Adapter
WO2011141856A1 (en) * 2010-05-14 2011-11-17 Koninklijke Philips Electronics N.V. Adaptive circuit
US9019061B2 (en) 2009-03-31 2015-04-28 Power Systems Technologies, Ltd. Magnetic device formed with U-shaped core pieces and power converter employing the same
US9077248B2 (en) 2009-06-17 2015-07-07 Power Systems Technologies Ltd Start-up circuit for a power adapter
US9088216B2 (en) 2009-01-19 2015-07-21 Power Systems Technologies, Ltd. Controller for a synchronous rectifier switch
US9106130B2 (en) 2012-07-16 2015-08-11 Power Systems Technologies, Inc. Magnetic device and power converter employing the same

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62290352A (en) * 1986-04-10 1987-12-17 フィリップス　エレクトロニクス　ネムローゼ　フェンノートシャップ Dc voltage generating circuit
JPH01298953A (en) * 1988-05-26 1989-12-01 Matsushita Electric Ind Co Ltd Power source
EP1193848A1 (en) * 2000-09-21 2002-04-03 Thomson Licensing S.A. Cicuit arrangement comprising a switch mode power supply
US8351228B2 (en) 2007-09-27 2013-01-08 Sanyo Electric Co., Ltd. Voltage conversion circuit
WO2009041326A1 (en) * 2007-09-27 2009-04-02 Sanyo Electric Co., Ltd. Voltage conversion circuit
JPWO2009041326A1 (en) * 2007-09-27 2011-01-27 三洋電機株式会社 Voltage conversion circuit
US9088216B2 (en) 2009-01-19 2015-07-21 Power Systems Technologies, Ltd. Controller for a synchronous rectifier switch
US9019061B2 (en) 2009-03-31 2015-04-28 Power Systems Technologies, Ltd. Magnetic device formed with U-shaped core pieces and power converter employing the same
US9077248B2 (en) 2009-06-17 2015-07-07 Power Systems Technologies Ltd Start-up circuit for a power adapter
US8638578B2 (en) * 2009-08-14 2014-01-28 Power System Technologies, Ltd. Power converter including a charge pump employable in a power adapter
US20110038179A1 (en) * 2009-08-14 2011-02-17 Xiaoyang Zhang Power Converter Including a Charge Pump Employable in a Power Adapter
JP2013526823A (en) * 2010-05-14 2013-06-24 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Adaptive circuit
KR20130117651A (en) * 2010-05-14 2013-10-28 코닌클리케 필립스 엔.브이. Adaptive circuit
US8698406B2 (en) 2010-05-14 2014-04-15 Koninklijke Philips N.V. Adaptive circuit
WO2011141856A1 (en) * 2010-05-14 2011-11-17 Koninklijke Philips Electronics N.V. Adaptive circuit
US9106130B2 (en) 2012-07-16 2015-08-11 Power Systems Technologies, Inc. Magnetic device and power converter employing the same

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