JPS631024B2 - - Google Patents
Info
- Publication number
- JPS631024B2 JPS631024B2 JP55082374A JP8237480A JPS631024B2 JP S631024 B2 JPS631024 B2 JP S631024B2 JP 55082374 A JP55082374 A JP 55082374A JP 8237480 A JP8237480 A JP 8237480A JP S631024 B2 JPS631024 B2 JP S631024B2
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- converter
- output voltage
- present
- output
- 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
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
- H02M3/10—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Description
【発明の詳細な説明】 本発明は降圧形電力変換器に関する。[Detailed description of the invention] The present invention relates to a step-down power converter.
降圧形電力変換器の例を図１に示す。図１にお
いて、トランジスタTr（又はスイツチング素子）
が導通している期間チヨークコイルＬ１を介して
入力の電力が負荷に供給され、同時にＬ１にはエ
ネルギーが備えられる。次にTrが遮断されると
今までＬ１に流れていた電流はダイオードＤ１を
介して流れ続け、Ｌ１に蓄積されていたエネルギ
ーを放出する。出力電圧の制御は周波数一定の導
通幅制御方式や導通時間または遮断時間一定の周
波数制御方式でトランジスタTrのオン・オフを
制御している。 An example of a step-down power converter is shown in FIG. In Figure 1, the transistor Tr (or switching element)
Input power is supplied to the load via the choke coil L1 during the period when the coil L1 is conducting, and at the same time, L1 is provided with energy. Next, when Tr is cut off, the current that has been flowing through L1 continues to flow through diode D1, releasing the energy stored in L1. The output voltage is controlled by controlling the on/off of the transistor Tr using a conduction width control method with a constant frequency or a frequency control method with a constant conduction time or cut-off time.
一方、最近の電圧変換器の制御回路にもICが
多く用いられている（いわゆるスイツチングレギ
ユレータ用IC）。これらのICは（−）アースの電
源電圧により動作するため（−）アースの入力電
圧に対し（＋）出力の電圧を得る電力変換器では
直接出力電圧を検出できるが図２に示すような
（＋）アースの入力電圧に対し（−）出力の電圧
を得る電力変換器では検出電圧レベルが異なるの
で直接に出力電圧が検出できずフオトカプラ２等
で絶縁しなければならない。 On the other hand, many ICs are also used in the control circuits of modern voltage converters (so-called switching regulator ICs). Since these ICs operate with the (-) ground power supply voltage, power converters that obtain (+) output voltage with respect to (-) ground input voltage can directly detect the output voltage, but as shown in Figure 2, ( In a power converter that obtains a (-) output voltage with respect to a (+) ground input voltage, the detection voltage level is different, so the output voltage cannot be directly detected and must be isolated with a photocoupler 2 or the like.
尚図２において、１はフオトカプラ２の出力電
圧に応じてトランジスタTrの導通幅を制御する
回路である。本発明は従つて、上記従来回路の欠
点を除去せる回路を提供することを目的とするも
のであり、本発明による回路は降圧形コンバータ
のチヨークコイルに補助巻線を設け、その巻線に
発生する電圧を整流して、該コンバータの出力電
圧に比例した電圧を得、該電圧によりコンバータ
の出力の安定化制御を行うようにしたことを特徴
とするものである。 In FIG. 2, reference numeral 1 denotes a circuit that controls the conduction width of the transistor Tr in accordance with the output voltage of the photocoupler 2. Therefore, it is an object of the present invention to provide a circuit that can eliminate the drawbacks of the conventional circuits described above.The circuit according to the present invention provides an auxiliary winding in the check coil of a step-down converter, and The present invention is characterized in that the voltage is rectified to obtain a voltage proportional to the output voltage of the converter, and the output of the converter is stabilized and controlled using the voltage.
以下本発明の実施例について説明する。 Examples of the present invention will be described below.
図３が本発明の１実施例である。 FIG. 3 shows one embodiment of the present invention.
図３において、チヨークコイルＬ２は従来例図
１、図２におけるチヨークコイルＬ１に補助巻線
を設けたものである。但し、“・”印が巻始めを
示す。トランジスタTrが導通している期間Ｌ２
の巻線N1には“・”印が（＋）となるような
（VIN−V0）の電圧が印加され、またトランジス
タTrが遮断している期間では、巻線N1には
“・”印が（−）となるような電圧V0が印加され
る。 In FIG. 3, a chiyoke coil L2 is the chiyoke coil L1 of the conventional example shown in FIGS. 1 and 2 provided with an auxiliary winding. However, the “・” mark indicates the beginning of the roll. Period L2 during which the transistor Tr is conductive
A voltage of (V IN −V 0 ) is applied to the winding N 1 so that the “・” mark becomes (+), and during the period when the transistor Tr is cut off, the winding N 1 is “・A voltage V 0 is applied such that the mark becomes (-).
したがつて、巻線N2に発生した電圧を半波整
流した電圧V0′は出力電圧V0に比例するのでV0を
検出する代りにV0′を検出することにより出力電
圧の安定化が行なえる。 Therefore, since the voltage V 0 ′ obtained by half-wave rectification of the voltage generated in the winding N 2 is proportional to the output voltage V 0 , the output voltage can be stabilized by detecting V 0 ′ instead of detecting V 0 . can be done.
図４に示した他の実施例では本発明をフオワー
ド形コンバータに使用したものである。変圧器Ｔ
を用い入出力間の絶縁を行なうフオワード形コン
バータでは出力電圧の変動分を入力側へ帰還させ
なければならず絶縁箇所を必要とする。したがつ
て本発明の如く補助巻線の電圧を検出すれば絶縁
箇所が不用となり部品点数が削減できる。 Another embodiment shown in FIG. 4 uses the present invention in a forward converter. transformer T
In a forward type converter that isolates the input and output using a converter, fluctuations in the output voltage must be fed back to the input side, and an insulating part is required. Therefore, if the voltage of the auxiliary winding is detected as in the present invention, no insulating parts are required and the number of parts can be reduced.
図１は降圧形コンバータの原理図、図２は負電
圧入力の従来の検出回路、図３，４は本発明の実
施例を示す。
図中、Trはトランジスタスイツチ、Ｄ１〜Ｄ
３はダイオード、Ｌ１，Ｌ２はチヨークコイル、
Ｃ１，Ｃ２はコンデンサ、１は電力変換器の制御
回路、２はフオトカプラ。
FIG. 1 is a principle diagram of a step-down converter, FIG. 2 is a conventional detection circuit for negative voltage input, and FIGS. 3 and 4 are embodiments of the present invention. In the figure, Tr is a transistor switch, D1 to D
3 is a diode, L1 and L2 are chiyoke coils,
C1 and C2 are capacitors, 1 is a power converter control circuit, and 2 is a photocoupler.
Claims (1)
線を設け、その巻線に発生する電圧を整流して、
該コンバータの出力電圧に比例した電圧を得、該
電圧によりコンバータの出力の安定化制御を行う
ようにしたことを特徴とする電力変換器。1. An auxiliary winding is provided in the chiyoke coil of the step-down converter, and the voltage generated in the winding is rectified.
A power converter characterized in that a voltage proportional to the output voltage of the converter is obtained, and the output of the converter is stabilized and controlled using the voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8237480A JPS578821A (en) | 1980-06-18 | 1980-06-18 | Power converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8237480A JPS578821A (en) | 1980-06-18 | 1980-06-18 | Power converter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS578821A JPS578821A (en) | 1982-01-18 |
| JPS631024B2 true JPS631024B2 (en) | 1988-01-11 |
Family
ID=13772804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8237480A Granted JPS578821A (en) | 1980-06-18 | 1980-06-18 | Power converter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS578821A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20210096014A (en) | 2020-01-27 | 2021-08-04 | 붓산 푸드사이언스 가부시키가이샤 | A method for producing a solid sugar containg 1-kestose and a solid sugar |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59122784U (en) * | 1983-02-02 | 1984-08-18 | ティーディーケイ株式会社 | switching power supply |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5015281A (en) * | 1973-06-15 | 1975-02-18 | ||
| JPS6048066B2 (en) * | 1978-06-16 | 1985-10-25 | 株式会社日立製作所 | magnetic bubble memory device |
| JPS553457U (en) * | 1978-06-22 | 1980-01-10 |
-
1980
- 1980-06-18 JP JP8237480A patent/JPS578821A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20210096014A (en) | 2020-01-27 | 2021-08-04 | 붓산 푸드사이언스 가부시키가이샤 | A method for producing a solid sugar containg 1-kestose and a solid sugar |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS578821A (en) | 1982-01-18 |
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