JPS5819161A - Dc/dc converter - Google Patents
Dc/dc converterInfo
- Publication number
- JPS5819161A JPS5819161A JP11723981A JP11723981A JPS5819161A JP S5819161 A JPS5819161 A JP S5819161A JP 11723981 A JP11723981 A JP 11723981A JP 11723981 A JP11723981 A JP 11723981A JP S5819161 A JPS5819161 A JP S5819161A
- Authority
- JP
- Japan
- Prior art keywords
- winding
- output voltage
- output
- circuit
- 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.)
- Granted
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
- H02M3/22—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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
Description
【発明の詳細な説明】
本実ＦＩＡ紘ＤＣ−ＤＣ：！／パータに係シ、特に直流
出力電圧を反映し大電圧を電磁的結合を介して発生し、
この電圧からスイッチング素子のオン−オフ制御信号を
発生するようＫし九ＤＣ−ＤＣコンバータＫｌｌする。[Detailed description of the invention] Honjitsu FIA Hiro DC-DC:! /In particular, a large voltage reflecting the DC output voltage is generated through electromagnetic coupling,
This voltage is used to generate an on-off control signal for a switching element and a DC-DC converter.
従来の一石式降圧形ＤＣ−ＤＣ″：１ンパータは第１図
乃至１１１３図に示すように１直流電＠（１）を変圧器
（２）の−次巻線ＣＢ’）Ｋｌｌｋ絖し、そして切離す
のにスイッチング素子（４）を設けている。１−ｅＤＸ
イツテンｒ素子（４）のオン−オフ時間の時比率を制御
する制御信号は直流出力電圧を安定化すべく変圧器（２
）の二次側直流出力回路から導かれている。仁Ｏｊ制御
信号を導く制御回路（５）は、ＤＣ−ＤＣコンバータの
入力側から出力側への漏れ電流、電源から生ずるノイズ
等ｔ−鐘断するため入出力間を絶縁してい友。淘、（６
）は増幅器、（７）はパルス幅変調器、（８）は駆動回
路である。Conventional single-stone step-down type DC-DC'': As shown in Figs. A switching element (4) is provided to separate the two.1-eDX
The control signal that controls the duty ratio of the on-off time of the power supply element (4) is transmitted to the transformer (2) in order to stabilize the DC output voltage.
) is derived from the secondary side DC output circuit. The control circuit (5) that guides the control signal is insulated between input and output to prevent leakage current from the input side to the output side of the DC-DC converter, noise generated from the power supply, etc. Tao, (6
) is an amplifier, (7) is a pulse width modulator, and (8) is a drive circuit.
そのため、制御回路（５）は第１図及び第２図に示すよ
うな駆動用補助電源回路（９）や、第３図に示すような
ホトカプラ（１０）が必要となり、コンバータ全体とし
て回路が複雑となっていた。これは直流出力電圧を直接
、制御回路へ導入するととＫよる必然的な結果であった
。Therefore, the control circuit (5) requires an auxiliary driving power supply circuit (9) as shown in Figures 1 and 2 and a photocoupler (10) as shown in Figure 3, making the converter circuit as a whole complicated. It became. This was an inevitable result of introducing the DC output voltage directly into the control circuit.
本発明は上述したような従来のＤＣ−ＤＣコンバータの
有する欠点を解決すぺ〈創案されたもので、その目的は
直流出力電圧を電磁的結合を介してスイッチング素子の
制御入力へフィードバックするようになして入出力間の
電気的絶縁が簡素化され九回路で達成しうるＤＣ−ＤＣ
コンバータを提供することにある。The present invention was devised to solve the above-mentioned drawbacks of conventional DC-DC converters, and its purpose is to feed back the DC output voltage to the control input of the switching element via electromagnetic coupling. DC-DC that simplifies electrical isolation between input and output and can be achieved with nine circuits.
The purpose is to provide a converter.
以下、添付図画を参照して本発明の一実施例全説明する
。Hereinafter, an embodiment of the present invention will be fully described with reference to the accompanying drawings.
第４ＷＡは本発明０ＤＣ−ＤＣコアＡ−１（１１）を示
す。（Ｅ）は直流電源で、これはスイッチング素子例え
ばＮＰＮ形トランジスタ（１２）を介して変圧器（１３
）の−次巻線（１４）へ接続されている。（１５）は二
次巻線で、＃４Ｉ線出力は！４；４−−）’（１６）ｔ
（１７）。The fourth WA shows the 0DC-DC core A-1 (11) of the present invention. (E) is a DC power supply, which is connected to a transformer (13) via a switching element such as an NPN transistor (12).
) is connected to the second winding (14). (15) is the secondary winding, and the #4I line output is! 4;4--)'(16)t
(17).
チョークコイル（１８）及びコンデンサ（１９）から成
る整流回路（２０）ｔ−経て負荷（２１）へ接続されて
いる。−次巻ｍｌ（１４）と二次Ｉｌｊ線（１５）との
電磁的結合形式は減極性に選ばれている。A rectifier circuit (20) consisting of a choke coil (18) and a capacitor (19) is connected to the load (21) via t-. - The type of electromagnetic coupling between the secondary winding ml (14) and the secondary Ilj line (15) is selected to be depolarized.
（２２）は−次巻ｌ１ｌ（１４）との電磁的結合形式が
一次巻ｍ［（１４）と二次巻線（１５）との電磁的結合
形式とは逆である（上記選択例では加極性である）す令
ット巻線で、その出カ祉ダイ、ｔ−）”（２３）を介し
てコンテン？（１９）の両電極間に接続されている。In (22), the electromagnetic coupling form with the -next winding l1l (14) is opposite to the electromagnetic coupling form between the primary winding m [(14) and the secondary winding (15) (in the above selection example, The polarity of the winding is connected between the two electrodes of the content (19) via its output die, t-'' (23).
（２４）は出力電圧検出用巻線で、その−次巻線（１４
）との電磁釣紬台形式祉−次ＩＦＭ（１４）とり竜ット
巻＊（２２）とのそれと同じである。上記選択例で云え
ば、出力電圧検出層巻１１（２４）とリセット巻線（２
２）との電磁的結合形式は減極性で多る。(24) is a winding for output voltage detection, and its negative winding (14
) is the same as that of the electromagnetic fishing stand format - next IFM (14) and Toruttomaki* (22). In the above selection example, the output voltage detection layer winding 11 (24) and the reset winding (2
2) The most common form of electromagnetic coupling is depolarization.
巻Ｍ（２４）の出力には、ダイオード（２５）、抵抗（
２６）及びコンデンサ（２７）が接続されて整流回路（
ｚ８）が設けられている。The output of winding M (24) includes a diode (25) and a resistor (
26) and a capacitor (27) are connected to form a rectifier circuit (
z8) is provided.
この整流回路（２８）は巻線（２４）Ｅｌｌ起された電
圧をピーク整流する丸めの４のである。This rectifier circuit (28) is a round 4 circuit which peak rectifies the voltage generated by the winding (24).
整流回路（２８）の出力ｔｉ制御回路（２９）の制御入
力へ接続され、制御回路（２９）の出力は上述のトラン
ジスタ（１２）のペースへ接続されている。The output ti of the rectifier circuit (28) is connected to the control input of the control circuit (29), and the output of the control circuit (29) is connected to the pace of the above-mentioned transistor (12).
制御回路（２９）Ｆ１２つの入力が各別に上述の整流回
路（２８）の出力と基準電圧源（３０）とに接続された
差動増幅器（３１）と、該増幅器（３１）の出力へ入力
が接続され喪パルス幅変調器（３２）と、皺変調器（３
２）の出力へ入力が接続され、出力が上述したトランジ
スタ（１２）のペースへ接続された駆動１路（３３）
トカラｅ、ｂ、増幅１）（３１）、変１１１１１（ｓ２
）及び駆動回路（３３）を動作させる電圧社直流電源（
Ｅ）から給電される。Control circuit (29) F1 includes a differential amplifier (31) whose two inputs are respectively connected to the output of the rectifier circuit (28) and the reference voltage source (30), and an input to the output of the amplifier (31). A mourning pulse width modulator (32) and a wrinkle modulator (3) are connected.
a drive path (33) whose input is connected to the output of 2) and whose output is connected to the pace of the above-mentioned transistor (12);
Tokara e, b, amplification 1) (31), change 11111 (s2
) and the voltage company DC power supply (33) that operates the drive circuit (33)
Power is supplied from E).
上述の如く構成される本発明コンバータの動作を説明す
る。The operation of the converter of the present invention configured as described above will be explained.
スイッチング素子（１２）がオンに転ぜられると、直流
電源（Ｅ）から変圧器（１３）の−次巻線（１４）に電
流が流れ、これに伴って二次巻線（Ｉｓ）に電圧が誘起
される。この電圧が整＃！回路（２０）で整流されて負
荷（２１）へ給電される。また、リセットＩ＃ＩＮ（２
２）及び出力電圧検出層巻ＩＩ（２４）にも電圧が誘起
されるが、その電圧極性はダイオード（２３）。When the switching element (12) is turned on, current flows from the DC power supply (E) to the negative secondary winding (14) of the transformer (13), and accordingly, voltage is applied to the secondary winding (Is). is induced. This voltage is correct! It is rectified by the circuit (20) and supplied to the load (21). Also, reset I#IN(2
2) and the output voltage detection layer winding II (24), but the voltage polarity is that of the diode (23).
（２５）を逆バイアスする向きにカつている。(25) is turned in the direction of reverse biasing.
従って、ｅｌ！（２ｇ）、（２４）Ｋ誘起された電圧は
コンバータ（１１）の動作には何んらの作用も生ぜしめ
ない。Therefore, el! (2g), (24) The K induced voltage has no effect on the operation of the converter (11).
スイッチング素子（１２）がオンになり九俵、皺素子が
オフに切換えられるとき、変圧器（１３）に蓄積された
１ｌｌｌｌｌＥエネルギーに起因してり竜ット巻纏（２
２）Ｋ上達し良電圧極性とけ逆向きの電圧が誘起される
と同時に、出力電圧検出用巻線（２４）Ｋも上述した電
圧極性とは逆向きの電圧が誘起される。これらの電圧は
ダイオード（２３）、（２５）で整流される向きＫあっ
て、リセット巻線（２２）Ｋ伝達される上述励磁エネル
ギーはダイオード（２３）ｔ−経て負荷（２１）にて吸
収される。このようにして、変圧器（１３）のためのり
竜ット動作を生ぜしめられる、
このときのコンデンサ（１９）の電極間電圧、即ちコン
バータ（１１）の直流出力電圧をＶ。When the switching element (12) is turned on and the nine-layer element is switched off, the tornado coil (2) is due to the 1llllllE energy stored in the transformer (13).
2) When K improves and the voltage polarity is changed, a voltage in the opposite direction is induced, and at the same time, a voltage in the opposite direction to the voltage polarity described above is also induced in the output voltage detection winding (24) K. These voltages are rectified by the diodes (23) and (25), and the above-mentioned excitation energy transmitted to the reset winding (22) is absorbed by the load (21) via the diode (23). Ru. In this way, the voltage across the electrodes of the capacitor (19), that is, the DC output voltage of the converter (11), is V.
とすると、とのＶ、はダイオード（２３）が導通してい
るときのリセット巻＃（２りの誘起電圧（Ｖ２１）とは
譬等しい、ｔた、この誘起電圧（Ｖｚｚ ）と出力電圧
検出用巻線（２４）に誘起される電圧（Ｖｓｉ）とは巻
＃（２りの巻数を（Ｎｏ）とし、巻線（２４）の巻数を
（８３４表る関係にめり、電圧（Ｖｓａ ）は直流出力
電圧（ｖｏ）に比例する。Then, V is equal to the induced voltage (V21) of the reset winding # (2) when the diode (23) is conductive, and this induced voltage (Vzz) and the voltage for output voltage detection. The voltage (Vsi) induced in the winding (24) is the number of turns of the winding (24) (No), the number of turns of the winding (24) is (834), and the voltage (Vsa) is It is proportional to the DC output voltage (vo).
この電圧（Ｖａ４）が従来とｔｔｘ同一構成の制御回路
（２９）の制御入力、即ち差動増幅器（３１）の一方の
入力へ供給されてそこで基準電圧と比較され、その比較
出力に従つ九パルス幅の信号がパルス幅変調器（３２）
から出力され、この信号に応答する駆動回路（３３）Ｋ
よってスイッチング素子（１２）のオン−オフ時間の時
比率が制御される。上述のパルス幅は直流出力電圧Ｖ＃
の上昇によ）狭くな気ｖ０の下ＴＩ＃により広くなるよ
うにされるから、直流出方電圧は安定化する。This voltage (Va4) is supplied to the control input of the control circuit (29) having the same configuration as the conventional ttx, that is, one input of the differential amplifier (31), where it is compared with the reference voltage, and the The pulse width signal is sent to the pulse width modulator (32)
A drive circuit (33) K that is output from and responds to this signal.
Therefore, the duty ratio of the on-off time of the switching element (12) is controlled. The pulse width mentioned above is the DC output voltage V#
The DC forward voltage is stabilized because it is made wider by TI# under the narrow air v0 (by the rise in V0).
このような安定化を生ぜしめる電圧は上述の如く直流出
力電圧を反映する電圧と電磁的に結合されて得られるか
ら、入出力間の電気的絶縁を確保するのに従来必要とし
た回路の複雑化をもたらす回路手段を一掃しうる。また
、その電圧は二次巻線（１５）、リセット巻＃（２２）
、及び出力電圧検出用巻線（２４）の巻数比を適切に選
ぶことによ多、直流出力電圧を変更したい場合でも制御
回路（２９）Ｋ必要である適切取電圧を得ることが出来
る。従って、制御回路（２９）は同一のま＼でよく、全
く変更ｔｌ！Ｌない。Since the voltage that produces this stabilization is obtained by electromagnetically coupling with the voltage reflecting the DC output voltage as described above, the complexity of the circuit conventionally required to ensure electrical isolation between input and output is eliminated. It is possible to wipe out the circuit means that bring about the transformation. Also, the voltage is the secondary winding (15), reset winding # (22)
By appropriately selecting the turns ratio of the output voltage detection winding (24) and the output voltage detection winding (24), it is possible to obtain the appropriate voltage required by the control circuit (29) even when it is desired to change the DC output voltage. Therefore, the control circuit (29) may remain the same and may not be changed at all! No L.
上記実施例においては、−次巻線（１４）と二次巻線（
１５）との電磁的結合形式を減極性とし、−欠番Ｍ（１
４）、！＝ｌｋツ）Ｉｉｌ＠（２！ ）及び出力電圧検
出用巻線（２４）との電磁的納金形式を減極性とする場
合について説明し九が、これら巻線間の電磁的結合形式
を逆にしてもよい。In the above embodiment, the negative winding (14) and the secondary winding (
15), the electromagnetic coupling form with depolarization is set as −missing number M(1
4),! =lktsu) Iil@(2!) and the output voltage detection winding (24) are explained in the case where the electromagnetic coupling form is depolarized. It's okay.
以上の説明から明らかなように、本発明によれば、直流
出力電圧が電磁的結合によシ制御回路の制御入力信号の
中に反映されるから、入出力間の電気的絶縁に従来のよ
うな回路の複雑化を来たす回路手段を用いなくて済む。As is clear from the above description, according to the present invention, the DC output voltage is reflected in the control input signal of the control circuit through electromagnetic coupling, so that electrical isolation between input and output is not required in the conventional manner. There is no need to use circuit means that would complicate the circuit.
従って、ＤＣ−ＤＣコンバータ回路の簡素化に役立つ１
本発明による自然法則の利用Ｓ！様によれば、上述制御
入力信号は直流出力電圧の値とは無関係に任意に設定し
うるから、たとえ直流出力電圧が異なって設定された場
合でも、制御回路の変更ｔ−ＩＬない等である。Therefore, 1 is useful for simplifying the DC-DC converter circuit.
Utilization of natural laws according to the present invention S! According to the above, since the above-mentioned control input signal can be set arbitrarily regardless of the value of the DC output voltage, even if the DC output voltage is set differently, there is no need to change the control circuit. .
第１図乃至第３ｍは従来のＤＣ−ＤＣコン−（−タの＠
略図、第４１１は本発明のＤＣ−ＤＣ１ノパータの回路
図である。
図中（１１）はＤＣ−ＤＣ：ｙｙバータ、（１３）は変
圧器、（１４）は−次巻線、（ＩＳ）は二次巻線、（２
２）は９４ット巻線、（Ｅ）Ｆｉ直流電源、（Ｘｔ）は
スイッチング素子、（２４）は出力電圧検出用巻線、（
２８）は整流回路、（２９）は制御回路である。
特許出願人 富士通株式会社Figures 1 to 3m are conventional DC-DC converters (-ta's @
Schematic diagram No. 411 is a circuit diagram of a DC-DC1 node parter of the present invention. In the figure, (11) is a DC-DC:yy converter, (13) is a transformer, (14) is a secondary winding, (IS) is a secondary winding, (2
2) is a 94t winding, (E) is a Fi DC power supply, (Xt) is a switching element, (24) is an output voltage detection winding, (
28) is a rectifier circuit, and (29) is a control circuit. Patent applicant Fujitsu Limited
Claims (1)
巻線と二次巻線との電磁的結合形式とは逆であるり竜ッ
ト巻線と上記二次巻−とから得られる共通直流出力電圧
管安定化させる制御回路の出力が、直流電源を一次巻線
へ接続するスイッチング素子のスイッチング入力へ、接
続され九ＤＣ−ＤＣ：ｉンバーＩＫ１？いて、上記−次
巻線との電磁的結合形式が上記−次巻線と二次巻−との
電磁的結合形式と鉱逆である出力電圧検出用４ｉ１線を
上記変圧器に設け、上記スイッチング素子のオフへの切
換わりに際して上記出力電圧検出用巻＃Ｋｌｌ起される
電圧【整流して上記制御ｒａｊＩｅ制御入力へ供給する
ように構成したことｔ４Ｉ黴とするＤＣ−ＤＣコンバー
タ。 （２）上記−次巻線と上記二次巻−との電磁的結合形式
を減極性とし、上記−次＊ｍと上記リセット巻線及び出
力電圧検出用壱曽との電磁的結合形式を加極性としたこ
と１＊黴とする特許請求の範ＩＩ第１項記載のＤＣ−Ｄ
Ｃ：ｌンバータ。[Scope of claims] The output of the control circuit stabilizing the common DC output voltage tube obtained from the secondary winding is connected to the switching input of the switching element connecting the DC power supply to the primary winding. , a 4i1 wire for output voltage detection is provided in the transformer, and the electromagnetic coupling type with the secondary winding is opposite to the electromagnetic coupling type between the secondary winding and the secondary winding, and the switching element A DC-DC converter configured to rectify the voltage generated by the output voltage detection winding #Kll and supply it to the control input when the voltage is switched off. (2) The above-mentioned - The electromagnetic coupling form between the next winding and the above-mentioned secondary winding is depolarized, and the electromagnetic coupling form between the above-mentioned -next*m and the above-mentioned reset winding and the output voltage detection Ichiso is made into additive polarity.1 *DC-D described in Claim II, Paragraph 1, which is defined as mold
C: lmbata.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11723981A JPS5819161A (en) | 1981-07-27 | 1981-07-27 | Dc/dc converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11723981A JPS5819161A (en) | 1981-07-27 | 1981-07-27 | Dc/dc converter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5819161A true JPS5819161A (en) | 1983-02-04 |
| JPS6259552B2 JPS6259552B2 (en) | 1987-12-11 |
Family
ID=14706823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11723981A Granted JPS5819161A (en) | 1981-07-27 | 1981-07-27 | Dc/dc converter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5819161A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0287966A (en) * | 1988-09-21 | 1990-03-28 | Fujitsu Denso Ltd | Forward dc/dc converter |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020065846A1 (en) * | 2018-09-27 | 2020-04-02 | 株式会社ユーリカエンジニアリング | Low-carbon type energy supply system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55136873A (en) * | 1979-04-11 | 1980-10-25 | Toshiba Electric Equip Corp | Power supply unit |
-
1981
- 1981-07-27 JP JP11723981A patent/JPS5819161A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55136873A (en) * | 1979-04-11 | 1980-10-25 | Toshiba Electric Equip Corp | Power supply unit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0287966A (en) * | 1988-09-21 | 1990-03-28 | Fujitsu Denso Ltd | Forward dc/dc converter |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6259552B2 (en) | 1987-12-11 |
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