JPH0379948B2 - - Google Patents
Info
- Publication number
- JPH0379948B2 JPH0379948B2 JP57024724A JP2472482A JPH0379948B2 JP H0379948 B2 JPH0379948 B2 JP H0379948B2 JP 57024724 A JP57024724 A JP 57024724A JP 2472482 A JP2472482 A JP 2472482A JP H0379948 B2 JPH0379948 B2 JP H0379948B2
- Authority
- JP
- Japan
- Prior art keywords
- capacitor
- circuit
- transformer
- diode
- power supply
- 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.)
- Expired - Lifetime
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
- H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
- H02M1/4208—Arrangements for improving power factor of AC input
-
- 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
- H02M3/33538—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 of the forward type
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Description
【発明の詳細な説明】
本発明は交流を入力とするスイツチング式直流
安定化電源装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a switching type DC stabilized power supply device that receives AC input.
従来におけるスイツチング式直流安定化電源装
置としては第１図に示すように構成されていた。 A conventional switching type DC stabilized power supply device was constructed as shown in FIG.
すなわち、AC電源端子１，２にダイオードの
ブリツジ回路からなる整流回路３を接続し、この
整流回路３の出力にトランス４の一次巻線Ｐとス
イツチングトランジスタ５の直列回路を接続し、
かつ、この直列回路と並列にコンデンサ６と、ト
ランス４の帰還巻線Ｆとダイオード７の直列回路
を接続し、トランス４の二次巻線Ｓにダイオード
８，９、チヨークコイル１０、コンデンサ１１よ
りなる整流、平滑回路を接続して負荷１２に出力
を供給するようにし、コンデンサ１１の両端にパ
ルス幅制御回路１３を接続し、このパルス幅制御
回路１３の出力をスイツチングトランジスタ５の
ベースに印加するように構成されていた。 That is, a rectifier circuit 3 consisting of a bridge circuit of diodes is connected to the AC power terminals 1 and 2, and a series circuit of the primary winding P of the transformer 4 and the switching transistor 5 is connected to the output of the rectifier circuit 3.
In addition, a capacitor 6 and a series circuit of a feedback winding F of the transformer 4 and a diode 7 are connected in parallel with this series circuit, and a secondary winding S of the transformer 4 is connected to a series circuit consisting of diodes 8 and 9, a chain coil 10, and a capacitor 11. A rectifier and smoothing circuit is connected to supply the output to the load 12, a pulse width control circuit 13 is connected to both ends of the capacitor 11, and the output of this pulse width control circuit 13 is applied to the base of the switching transistor 5. It was structured like this.
このような構成よりなるスイツチング式直流安
定化電源装置はコンデンサインプツト型であり、
入力電圧波形のピーク付近でのみコンデンサ６に
充電電流が流れるため、電流波形が歪み、平均値
が少ないにもかかわらず実効値が大きく力率が悪
くなるものであつた。さらに、コンデンサ６とし
て電解コンデンサを使用するため、その実効電流
に耐える大きなサイズのコンデンサを必要とする
ものであつた。 The switching type DC stabilized power supply with this configuration is a capacitor input type.
Since the charging current flows through the capacitor 6 only near the peak of the input voltage waveform, the current waveform is distorted, and although the average value is small, the effective value is large and the power factor is poor. Furthermore, since an electrolytic capacitor is used as the capacitor 6, a large capacitor that can withstand the effective current is required.
従来、力率を改善するにはチヨークインプツト
型整流回路を使用する必要があり、重量の大きな
チヨークコイルを使用しなければならないため、
小型軽量というスイツチングレギユレータの特徴
が損われてしまうといつた欠点があつた。 Conventionally, to improve the power factor, it was necessary to use a chiyoke input type rectifier circuit, which required the use of a heavy chiyoke coil.
The drawback was that the switching regulator's characteristics of being small and lightweight were lost.
また、現在スイツチング周波数の高周波化が進
んでいるが、入力の電解コンデンサが大きな体積
を占め、スイツチング周波数を上げてもあまり全
体の体積が小さくならないといつた欠点があつ
た。 Furthermore, although the switching frequency is currently becoming higher, the input electrolytic capacitor occupies a large volume, and even if the switching frequency is increased, the overall volume does not become much smaller.
本発明は以上のような従来の欠点を除去するも
のであり、力率が大幅に改善され、小型軽量化が
可能なスイツチング式直流安定化電源装置を提供
することを目的とするものである。 The present invention eliminates the above-mentioned conventional drawbacks, and aims to provide a switching type DC stabilized power supply device that has a significantly improved power factor and can be made smaller and lighter.
上記目的を達成するために本発明は、トランス
の一次巻線より少ない巻数で逆極性の帰還巻線に
発生する電圧でダイオードを通して充電されるコ
ンデンサと、このコンデンサからトランスの一次
巻線にエネルギーを供給できるように接続された
ダイオードとを有することを特徴としたものであ
る。 To achieve the above object, the present invention provides a capacitor that is charged through a diode with a voltage generated in a feedback winding of opposite polarity with fewer turns than the primary winding of a transformer, and that transfers energy from this capacitor to the primary winding of the transformer. and a diode connected to provide a supply voltage.
以下、本発明の実施例を図面第２図〜第６図に
より説明する。 Embodiments of the present invention will be described below with reference to FIGS. 2 to 6.
まず、第２図において、１４，１５はAC電源
端子で、このAC電源端子１４，１５にはダイオ
ードのブリツジ回路からなる整流回路１６が接続
され、この整流回路１６の出力にはトランス１７
の一次巻線Ｐとスイツチングトランジスタ１８の
直列回路が接続され、一次巻線Ｐと整流回路１６
との接続点にはダイオード１９のカソードが接続
され、このダイオード１９のアノードと整流回路
１６の他方の出力との間にコンデンサ２０が接続
され、トランス１７の帰還巻線Ｆの一端はダイオ
ード２１を通してコンデンサ２０とダイオード１
９の接続点に、帰還巻線Ｆの他端はスイツチング
トランジスタ１８のエミツタに接続されている。 First, in FIG. 2, 14 and 15 are AC power supply terminals, and a rectifier circuit 16 consisting of a diode bridge circuit is connected to these AC power supply terminals 14 and 15, and a transformer 17 is connected to the output of this rectifier circuit 16.
A series circuit of the primary winding P and the switching transistor 18 is connected, and the primary winding P and the rectifier circuit 16
The cathode of a diode 19 is connected to the connection point between the diode 19 and the other output of the rectifier circuit 16, and the capacitor 20 is connected between the anode of the diode 19 and the other output of the rectifier circuit 16. capacitor 20 and diode 1
At the connection point 9, the other end of the feedback winding F is connected to the emitter of the switching transistor 18.
トランス１７の二次巻線Ｓにはダイオード２
２，２３の整流回路、チヨークコイル２４とコン
デンサ２５の平滑回路を介して負荷２６が接続さ
れるようになつており、上記コンデンサ２５の両
端にはパルス幅制御回路２７が接続され、このパ
ルス幅制御回路２７の出力はスイツチングトラン
ジスタ１８のベースに接続されている。 A diode 2 is connected to the secondary winding S of the transformer 17.
A load 26 is connected through rectifier circuits 2 and 23, a smoothing circuit consisting of a chiyoke coil 24 and a capacitor 25, and a pulse width control circuit 27 is connected to both ends of the capacitor 25 to control the pulse width. The output of circuit 27 is connected to the base of switching transistor 18.
このような構成で、整流回路１６の出力電圧は
第３図に示すような全波整流波形となり、t0期間
時は負荷２６に電力を供給するが、電源装置の安
定化開始電圧より低くなるt1期間は他から電力を
供給しなければならない。そこでトランス１７の
磁心に蓄積される励磁エネルギーに注目し、一次
巻線Ｐより少ない巻数で極性が逆の帰還巻線Ｆを
設け、スイツチングトランジスタ１８のOFF期
間に発生するトランス１７の逆電圧、すなわち磁
心の励磁エネルギー分をダイオード２１を通して
コンデンサ２０に蓄積しておき、整流回路１６の
出力電圧が電源装置の安定化開始電圧よりも低く
なるt1の期間のコンデンサ２０からエネルギーを
供給することにより出力電圧を安定にすることが
できる。 With this configuration, the output voltage of the rectifier circuit 16 has a full-wave rectified waveform as shown in FIG. 3, and power is supplied to the load 26 during the t 0 period, but it is lower than the stabilization start voltage of the power supply device. During the t period, power must be supplied from another source. Therefore, focusing on the excitation energy accumulated in the magnetic core of the transformer 17, a feedback winding F with a smaller number of turns than the primary winding P and opposite polarity is provided to reduce the reverse voltage of the transformer 17 that occurs during the OFF period of the switching transistor 18, That is, by storing the excitation energy of the magnetic core in the capacitor 20 through the diode 21, and supplying energy from the capacitor 20 during the period t1 when the output voltage of the rectifier circuit 16 is lower than the stabilization start voltage of the power supply device. The output voltage can be stabilized.
第２図ではフイードフオワード型のスイツチン
グレギユレータを採用しているが、この場合安定
化可能範囲は定格電圧の−30％、＋15％位である。 In Fig. 2, a feed forward type switching regulator is used, but in this case, the stabilization range is about -30% and +15% of the rated voltage.
また、本発明と従来のスイツチング式直流安定
化電源装置の出力に対する力率、出力に対する入
力電流特性を第４図、第５図に示し、本発明は力
率が大幅に改善されるとともに出力が大きくなる
につれて入力電流が大幅に低減されていることが
明らかである。 Furthermore, the power factor with respect to the output and the input current characteristics with respect to the output of the present invention and the conventional switching type DC stabilized power supply device are shown in Figs. 4 and 5. It is clear that the input current is significantly reduced as the size increases.
第６図に示す実施例はトランス１７の二次巻線
Ｓの極性を逆としてフライバツク型のスイツチン
グレギユレータとしたもので、安定化範囲は−70
％、＋20％とできるため、コンデンサ２０に蓄積
させるエネルギーはわずかでよく、コンデンサ２
０として電解コンデンサを用いても容量も小さく
てよい。入力側の電解コンデンサが小さいとスイ
ツチング周波数が大きくなればなる程全体のサイ
ズも減少し安価になる。 In the embodiment shown in FIG. 6, the polarity of the secondary winding S of the transformer 17 is reversed to form a flyback type switching regulator, and the stabilization range is -70
%, +20%, so only a small amount of energy is required to be stored in capacitor 20, and capacitor 2
Even if an electrolytic capacitor is used as zero, the capacitance may be small. If the electrolytic capacitor on the input side is small, the larger the switching frequency becomes, the smaller the overall size becomes and the cost becomes cheaper.
以上のように本発明のスイツチング式直流安定
化電源装置は構成されるため、力率が大幅に改善
され、出力が大きくなるにつれて入力電流が大幅
に低減され、入力側のコンデンサとしても容量の
小さいものでよく、小型軽量化が計れるなどの効
果をもち、工業的価値の大なるものである。 As the switching type DC stabilized power supply device of the present invention is configured as described above, the power factor is significantly improved, the input current is significantly reduced as the output increases, and the capacitance of the input side capacitor is small. It is of great industrial value because it can be made small and lightweight.
第１図は従来のスイツチング式直流安定化電源
装置を示す電気的回路図、第２図は本発明のスイ
ツチング式直流安定化電源装置の一実施例を示す
電気的回路図、第３図は同整流回路の出力波形
図、第４図は本発明と従来のスイツチング式直流
安定化電源装置の力率特性図、第５図は同入力電
流特性図、第６図は他の実施例の電気的回路図で
ある。
１４，１５……交流電源端子、１６……整流回
路、１７……トランス、Ｐ……一次巻線、Ｆ……
帰還巻線、Ｓ……二次巻線、１８……スイツチン
グトランジスタ、１９……ダイオード、２０……
コンデンサ、２１……ダイオード、２２，２３…
…ダイオード、２４……チヨークコイル、２５…
…コンデンサ、２６……負荷、２７……パルス幅
制御回路。
Figure 1 is an electrical circuit diagram showing a conventional switching type DC stabilized power supply, Figure 2 is an electrical circuit diagram showing an embodiment of the switching type DC stabilized power supply of the present invention, and Figure 3 is the same. 4 is a power factor characteristic diagram of the present invention and a conventional switching type DC stabilized power supply device, FIG. 5 is an input current characteristic diagram of the same, and FIG. 6 is an electrical diagram of another embodiment. It is a circuit diagram. 14, 15... AC power supply terminal, 16... Rectifier circuit, 17... Transformer, P... Primary winding, F...
Feedback winding, S... Secondary winding, 18... Switching transistor, 19... Diode, 20...
Capacitor, 21... Diode, 22, 23...
...Diode, 24...Chiyoke coil, 25...
...Capacitor, 26...Load, 27...Pulse width control circuit.
Claims (1)
回路の出力にトランスの一次巻線とスイツチング
素子の直列回路を接続し、上記トランスに一次巻
線より少ない巻数で逆極性の帰還巻線を設け、ス
イツチング素子のOFF期間に帰還巻線に発生す
る電圧でダイオードを介して充電されるコンデン
サを設け、このコンデンサからトランスの一次巻
線にエネルギーを供給できるようにダイオードを
接続し、トランスの二次巻線に整流回路、平滑回
路を設けるとともにパルス幅制御回路を設け、こ
のパルス幅制御回路の出力をスイツチング素子に
印加するように構成してなるスイツチング式直流
安定化電源装置。1 Connect a rectifier circuit to the AC power supply terminal, connect a series circuit of the primary winding of a transformer and a switching element to the output of this rectifier circuit, and provide a feedback winding of opposite polarity with a smaller number of turns than the primary winding in the transformer. , a capacitor is provided that is charged via a diode with the voltage generated in the feedback winding during the OFF period of the switching element, and the diode is connected so that energy can be supplied from this capacitor to the primary winding of the transformer. A switching type DC stabilized power supply device comprising a winding provided with a rectifier circuit, a smoothing circuit, a pulse width control circuit, and an output of the pulse width control circuit applied to a switching element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57024724A JPS58141680A (en) | 1982-02-17 | 1982-02-17 | Switching type DC stabilized power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57024724A JPS58141680A (en) | 1982-02-17 | 1982-02-17 | Switching type DC stabilized power supply |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58141680A JPS58141680A (en) | 1983-08-23 |
| JPH0379948B2 true JPH0379948B2 (en) | 1991-12-20 |
Family
ID=12146100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57024724A Granted JPS58141680A (en) | 1982-02-17 | 1982-02-17 | Switching type DC stabilized power supply |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58141680A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2674267B2 (en) * | 1990-03-31 | 1997-11-12 | 東芝ライテック株式会社 | Power supply |
| DE4025322A1 (en) * | 1990-08-10 | 1992-02-13 | Thomson Brandt Gmbh | MAINS OPERATED PHASE CONTROL CONTROL |
| JP3305317B2 (en) * | 1991-06-13 | 2002-07-22 | アールシーエー トムソン ライセンシング コーポレイション | Switch mode power supply with reduced input current distortion |
| US5349515A (en) * | 1992-09-17 | 1994-09-20 | Rca Thomson Licensing Corporation | Switch mode power supply with feed-forward pulse limit control |
| EP0964504B1 (en) * | 1994-01-28 | 2004-05-06 | Matsushita Electric Industrial Co., Ltd. | Switching power source apparatus |
| DE19747801A1 (en) * | 1997-10-30 | 1999-05-06 | Thomson Brandt Gmbh | Switching power supply |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5631116A (en) * | 1979-08-23 | 1981-03-28 | Toko Inc | Switching regulator |
-
1982
- 1982-02-17 JP JP57024724A patent/JPS58141680A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58141680A (en) | 1983-08-23 |
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