WO2005088819A1 - スイッチング電源装置 - Google Patents
スイッチング電源装置 Download PDFInfo
- Publication number
- WO2005088819A1 WO2005088819A1 PCT/JP2005/003615 JP2005003615W WO2005088819A1 WO 2005088819 A1 WO2005088819 A1 WO 2005088819A1 JP 2005003615 W JP2005003615 W JP 2005003615W WO 2005088819 A1 WO2005088819 A1 WO 2005088819A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- input
- power supply
- switching power
- voltage
- supply device
- Prior art date
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
- H02M1/00—Details of apparatus for conversion
- H02M1/36—Means for starting or stopping converters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/005—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting using a power saving mode
-
- 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
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
- H02M3/33523—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with galvanic isolation between input and output of both the power stage and the feedback loop
Definitions
- the present invention relates to a switching power supply used for various electronic devices.
- a conventional switching power supply device will be described with reference to FIG.
- this switching power supply device has AC input terminals la and lb, a primary-side rectifying and smoothing circuit 2, a switching transformer 3, a primary winding 3a, a primary control winding 3b for bias, and a secondary winding.
- Line 3c main switching element 4, primary control smoothing circuit 5, secondary side rectification smoothing circuit 6, DC output terminals (anode, cathode) 7a, 7b, primary control circuit 9, photo power blur 10, constant voltage
- It has a control circuit 11 and a starting resistance 12 for the primary control circuit.
- An input electrolytic capacitor discharge resistor 8 is connected between the anode and cathode of the primary side rectifying and smoothing circuit 2, and a secondary is connected between the DC output terminals 7a and 7b.
- Side bleeder resistance 13 is connected.
- the present invention provides an input voltage level detection that detects a voltage level between AC input terminals when an AC input of a switching power supply is cut off, and stops an oscillating operation of a primary control circuit when the voltage level falls below a predetermined level.
- a switching power supply device provided with a circuit.
- the operation of the primary control circuit can be stopped quickly when the AC input is disconnected at a light load.
- the DC output voltage without discharging the accumulated charge in the input electrolytic capacitor of the primary rectifier / smoothing circuit can fall within a certain period of time, and the discharge resistance for the input electrolytic capacitor and the secondary bleeder can be reduced. Since no resistor is required, power consumption at light load can be significantly reduced.
- FIG. 1 is a circuit diagram showing a schematic configuration of a switching power supply of the present invention.
- FIG. 2 is a circuit diagram showing a schematic configuration of a conventional switching power supply device.
- the switching power supply of the present invention has an AC input terminal la, lb, a primary rectifying and smoothing circuit 2, a switching transformer 3, a primary winding 3a, and a primary control winding for bias. 3b, secondary winding 3c, main switching element 4, primary control smoothing circuit 5, secondary side rectifying smoothing circuit 6, DC output terminals (anode, cathode) 7a, 7b, primary control circuit 9, photo power Brass 10, constant voltage control circuit 11, starting resistor for primary control circuit 11, capacitor 14, resistors 15, 16, switch element 17 to stop operation of primary control circuit 17, diode 18, input voltage level detection circuit 19 And Then, one end of the input voltage level detection circuit 19 is connected to the AC input terminal la, connected to the capacitor 14 via the diode 18, and the cathode of the capacitor 14 is connected to the AC input terminal lb.
- Resistors 15 and 16 are connected to both ends of the switch element 17, and the divided input voltage is supplied to the base of the switch element 17. When this input voltage falls below a predetermined voltage, the switch element 17 is turned off.
- the predetermined voltage means that, first, the switch element 17 does not turn OFF for, for example, 80 milliseconds or more in response to the instantaneous AC input power failure, and second, the switch element 17 turns off within three seconds, for example, when the AC input is cut off. Voltage.
- a capacitor having a predetermined capacity is used as the capacitor 14.
- the predetermined capacity can be arbitrarily selected as long as the capacity satisfies the following conditions.
- the DC output voltage is maintained for, for example, 80 milliseconds or more in response to the momentary AC input power failure, and second, the AC input disconnection force only needs to be such that the capacitor 14 can be discharged within, for example, 3 seconds. . That is, any capacity can be selected as long as the capacity satisfies the above condition.
- capacitor 14 The switch element 17 is turned off when the voltage drops. Note that the above retention time is determined by the input electrolytic capacitor 2a.
- the primary control circuit 9 When the primary control circuit 9 is started, a current is supplied when the input is turned on via the primary control circuit starting resistor 12 connected to the anode of the capacitor 14, and the primary control circuit 9 starts oscillating. It is configured to do so. As a result, when the input is disconnected, a trouble such as restarting of the primary control circuit 9 due to the electric charge accumulated in the input electrolytic capacitor 2a does not occur.
- the switching power supply device of the present invention provides an input electrolytic capacitor discharging resistor for discharging the electric charge of the input electrolytic capacitor 2a of the primary-side rectifying / smoothing circuit 2 when the AC input is disconnected. It is not necessary to use the secondary bleeder resistor 13 for discharging the charge of the output electrolytic capacitor 6a of the secondary rectifying / smoothing circuit 8 or 8. Furthermore, the DC output voltage can be reduced within a predetermined time, and the power consumption at light load can be reduced even by V. /
- a transistor is used as the switch element 17 for stopping the oscillation operation of the primary side control circuit 9.
- the same effect can be obtained by using a photo power plastic which is not limited to this.
- the same effect can be obtained by connecting the diode side of the photo power blur in series between the resistors 15 and 16 and stopping the oscillation operation of the primary control circuit 9 on the transistor side of the photo power blur. can get.
- the present invention is not limited by the present embodiment.
- the switching power supply device of the present invention can cause the DC output voltage when the AC input is disconnected under a light load to fall within a predetermined time, and can suppress the power consumption during a light load. Therefore, the range of application as a switching power supply is wide.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006510919A JPWO2005088819A1 (ja) | 2004-03-17 | 2005-03-03 | スイッチング電源装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004-076220 | 2004-03-17 | ||
JP2004076220 | 2004-03-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005088819A1 true WO2005088819A1 (ja) | 2005-09-22 |
Family
ID=34975922
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/003615 WO2005088819A1 (ja) | 2004-03-17 | 2005-03-03 | スイッチング電源装置 |
Country Status (2)
Country | Link |
---|---|
JP (1) | JPWO2005088819A1 (ja) |
WO (1) | WO2005088819A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012029935A1 (ja) * | 2010-09-02 | 2012-03-08 | 株式会社アイ・オー・データ機器 | 保護機能付きスイッチング電源回路 |
JP2015008599A (ja) * | 2013-06-25 | 2015-01-15 | ニチコン株式会社 | スイッチング電源装置 |
WO2019225253A1 (ja) | 2018-05-21 | 2019-11-28 | オムロン株式会社 | 制御システムおよび電源ユニット |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07213066A (ja) * | 1994-01-11 | 1995-08-11 | Minebea Co Ltd | 高力率スイッチング電源 |
JPH08289539A (ja) * | 1995-04-11 | 1996-11-01 | Nec Shizuoka Ltd | スイッチング電源装置 |
JP2002051543A (ja) * | 2000-07-28 | 2002-02-15 | Nichicon Corp | リンギングチョークコンバータ |
-
2005
- 2005-03-03 JP JP2006510919A patent/JPWO2005088819A1/ja active Pending
- 2005-03-03 WO PCT/JP2005/003615 patent/WO2005088819A1/ja active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07213066A (ja) * | 1994-01-11 | 1995-08-11 | Minebea Co Ltd | 高力率スイッチング電源 |
JPH08289539A (ja) * | 1995-04-11 | 1996-11-01 | Nec Shizuoka Ltd | スイッチング電源装置 |
JP2002051543A (ja) * | 2000-07-28 | 2002-02-15 | Nichicon Corp | リンギングチョークコンバータ |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130170621A1 (en) * | 2010-09-01 | 2013-07-04 | I-O Data Device Inc | Switching power supply circuit provided with protection function |
WO2012029935A1 (ja) * | 2010-09-02 | 2012-03-08 | 株式会社アイ・オー・データ機器 | 保護機能付きスイッチング電源回路 |
CN103038992A (zh) * | 2010-09-02 | 2013-04-10 | 艾欧资讯有限公司 | 带保护功能的开关电源电路 |
JP2013138608A (ja) * | 2010-09-02 | 2013-07-11 | I-O Data Device Inc | 保護機能付きスイッチング電源回路およびそれを用いた電子機器 |
JP5276750B2 (ja) * | 2010-09-02 | 2013-08-28 | 株式会社アイ・オー・データ機器 | 保護機能付きスイッチング電源回路およびそれを用いた電子機器 |
KR101475399B1 (ko) * | 2010-09-02 | 2014-12-22 | 가부시키가이샤 아이-오 데이타 기키 | 보호 기능 부착된 스위칭 전원 회로 |
JP2015008599A (ja) * | 2013-06-25 | 2015-01-15 | ニチコン株式会社 | スイッチング電源装置 |
WO2019225253A1 (ja) | 2018-05-21 | 2019-11-28 | オムロン株式会社 | 制御システムおよび電源ユニット |
US11368094B2 (en) | 2018-05-21 | 2022-06-21 | Omron Corporation | Control system and power supply unit |
Also Published As
Publication number | Publication date |
---|---|
JPWO2005088819A1 (ja) | 2008-01-31 |
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