JPH0256033B2 - - Google Patents
Info
- Publication number
- JPH0256033B2 JPH0256033B2 JP61292142A JP29214286A JPH0256033B2 JP H0256033 B2 JPH0256033 B2 JP H0256033B2 JP 61292142 A JP61292142 A JP 61292142A JP 29214286 A JP29214286 A JP 29214286A JP H0256033 B2 JPH0256033 B2 JP H0256033B2
- Authority
- JP
- Japan
- Prior art keywords
- semiconductor switch
- positive
- inductance element
- negative
- turned
- 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
- 239000004065 semiconductor Substances 0.000 claims description 38
- 238000010586 diagram Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000009499 grossing Methods 0.000 description 1
Landscapes
- Dc-Dc Converters (AREA)
- Inverter Devices (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、正負２チヤンネルの出力電圧が得ら
れるスイツチング電源装置の構成の改良に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improvement in the configuration of a switching power supply device that can obtain output voltages of two positive and negative channels.
従来のスイツチング電源装置では、出力電圧の
１チヤンネル毎に各１個のエネルギー変換用イン
ダクタンス素子を用いている。したがつて、正と
負の２チヤンネルの出力を得る場合、比較的大き
なスペースを占めるコイル又はトランス等のイン
ダクタンス素子が２個必要となるので、電源装置
を小型化する上での障害となつていた。
In conventional switching power supplies, one energy conversion inductance element is used for each channel of output voltage. Therefore, in order to obtain output from two channels, positive and negative, two inductance elements such as coils or transformers are required, which occupy a relatively large space, which is an obstacle to downsizing the power supply device. Ta.
本発明は、一つだけのインダクタンス素子を用
いて正負２チヤンネルの出力電圧を得られる変換
回路方式を提供するもので、この構成によりスイ
ツチング電源装置の一層の小型化を図ることを目
的とする。
The present invention provides a conversion circuit system capable of obtaining output voltages of two positive and negative channels using only one inductance element, and aims to further downsize a switching power supply device by using this configuration.
本発明は、インダクタンス素子の両端をそれぞ
れ別個の半導体スイツチを介して入力電源に接続
し、同インダクタンス素子の両端をさらに別々の
半導体スイツチを介して接地するとともに、この
インダクタンス素子の一端に二つのダイオードを
それぞれ正方向および負方向に接続し、これら四
つの半導体スイツチをオン・オフ制御することに
よつて、インダクタンス素子に流れる電流の方向
を切り換え、正方向のダイオードを通じて正電圧
を、負方向のダイオードを通じて負電圧をそれぞ
れ出力するようにした構成を特徴とする。
In the present invention, both ends of an inductance element are connected to an input power source through separate semiconductor switches, both ends of the inductance element are further grounded through separate semiconductor switches, and two diodes are connected to one end of the inductance element. By connecting these four semiconductor switches in the positive direction and negative direction, respectively, and controlling the on/off of these four semiconductor switches, the direction of the current flowing through the inductance element is switched, and a positive voltage is applied through the diode in the positive direction, and a voltage is applied through the diode in the negative direction. It is characterized by a configuration in which a negative voltage is output through each.
第１図は本発明のスイツチング電源装置の一実
施例であり、回路要部の構成例を示している。
FIG. 1 shows an embodiment of the switching power supply device of the present invention, and shows an example of the configuration of the main parts of the circuit.
コイル５の一端Ａは、半導体スイツチＳ１を介
して入力電源Viに接続するとともに別の半導体
スイツチＳ２を介して接地してある。また、コイ
ル５の他端Ｂは、半導体スイツチＳ３を介して入
力電源Viに接続するとともに半導体スイツチＳ
４を介して接地してある。そして、半導体スイツ
チＳ３および半導体スイツチＳ４が接続されたコ
イル５の他端Ｂには、それぞれ正方向・負方向の
向きで整流用ダイオード６，７を接続し、この出
力端子１０，１１側はそれぞれ平滑用コンデンサ
８，９を介して接地してある。 One end A of the coil 5 is connected to an input power source Vi via a semiconductor switch S1 and grounded via another semiconductor switch S2. Further, the other end B of the coil 5 is connected to the input power supply Vi via the semiconductor switch S3, and the other end B of the coil 5 is connected to the input power supply Vi via the semiconductor switch S3.
It is grounded via 4. Rectifier diodes 6 and 7 are connected to the other end B of the coil 5 to which the semiconductor switch S3 and the semiconductor switch S4 are connected in the positive and negative directions, respectively, and the output terminals 10 and 11 are connected to the other end B of the coil 5, respectively. It is grounded via smoothing capacitors 8 and 9.
次に、このスイツチング電源装置の動作につい
て説明する。今、半導体スイツチＳ１，Ｓ３，Ｓ
４をオフとし半導体スイツチＳ２をオンにしたと
き、その等価回路は第２図のようになる。この状
態で半導体スイツチＳ３をオンにすると、コイル
５にはＢ点からＡ点に向かう電流が流れて電磁エ
ネルギーがコイル５に蓄積される。そして、半導
体スイツチＳ２がオン状態のままで半導体スイツ
チＳ３をオフに切り換えると、Ｂ点には第４図の
ように負のフライバツク電圧が現れ、負方向に接
続されたダイオード７を通して出力端子１１に負
の出力電圧−V0を生ずる。 Next, the operation of this switching power supply device will be explained. Now, semiconductor switches S1, S3, S
When the semiconductor switch S2 is turned off and the semiconductor switch S2 is turned on, the equivalent circuit becomes as shown in FIG. When the semiconductor switch S3 is turned on in this state, a current flows through the coil 5 from point B to point A, and electromagnetic energy is accumulated in the coil 5. When semiconductor switch S3 is turned off while semiconductor switch S2 remains on, a negative flyback voltage appears at point B as shown in FIG. 4, and is applied to output terminal 11 through diode 7 connected in the negative direction. Produces a negative output voltage -V 0 .
次に、半導体スイツチＳ２，Ｓ３，Ｓ４がオフ
の状態で半導体スイツチＳ１をオンにすると、こ
のときの等価回路は第３図のようになる。ここで
半導体スイツチＳ４をオンにすると、コイル５に
はＡ点からＢ点に向かつて電流が流れて電磁エネ
ルギーがコイル５に蓄積される。したがつて、こ
の半導体スイツチＳ４をオフに切り換えると、Ｂ
点には第４図のように正のフライバツク電圧が現
れ、正方向のダイオード６を通して出力端子１０
に正の出力電圧＋V0を生じる。 Next, when semiconductor switch S1 is turned on while semiconductor switches S2, S3, and S4 are off, the equivalent circuit at this time becomes as shown in FIG. When the semiconductor switch S4 is turned on, a current flows through the coil 5 from point A to point B, and electromagnetic energy is accumulated in the coil 5. Therefore, when this semiconductor switch S4 is turned off, B
A positive flyback voltage appears at the point as shown in FIG. 4, and is applied to the output terminal 10 through the positive diode 6.
produces a positive output voltage +V 0 .
以上のように、半導体スイツチＳ１〜Ｓ４のオ
ン・オフ動作を繰り返すことによつて、正・負の
出力電圧を定常的に得ることができる。 As described above, by repeating the on/off operation of the semiconductor switches S1 to S4, positive and negative output voltages can be obtained steadily.
なお、半導体スイツチＳ１，Ｓ２のオン時間の
長さや、半導体スイツチＳ３と半導体スイツチＳ
４のスイツチング頻度の割合は、正・負の出力の
負荷の大きさに応じて適宜変更できることは言う
までもない。 Note that the length of on time of semiconductor switches S1 and S2, and the length of on time of semiconductor switches S1 and S2, semiconductor switch S3 and semiconductor switch S
It goes without saying that the switching frequency ratio of 4 can be changed as appropriate depending on the magnitude of the load of positive and negative outputs.
本発明によれば、大きなスペースを占めるイン
ダクタンス素子が１個ですみ、四つの半導体スイ
ツチやその制御回路はIC化できるので、正負２
チヤンネルの出力電圧を得られるスイツチング電
源装置を大幅に小型化できる効果がある。
According to the present invention, only one inductance element, which occupies a large space, is required, and four semiconductor switches and their control circuits can be integrated into ICs.
This has the effect of significantly reducing the size of the switching power supply device that can obtain the channel output voltage.
第１図は本発明によるスイツチング電源装置の
一実施例を示す要部の回路図、第２図および第３
図はそれぞれ半導体スイツチの異なる切り換え状
態における等価回路図、第４図は動作波形図であ
る。
Ｓ１〜Ｓ４……半導体スイツチ、５……インダ
クタンス素子、６，７……ダイオード、８，９…
…コンデンサ、１０，１１……出力端子。
FIG. 1 is a circuit diagram of essential parts showing an embodiment of a switching power supply device according to the present invention, and FIGS.
The figures are equivalent circuit diagrams in different switching states of the semiconductor switch, and FIG. 4 is an operating waveform diagram. S1-S4... Semiconductor switch, 5... Inductance element, 6, 7... Diode, 8, 9...
...Capacitor, 10, 11... Output terminal.
Claims (1)
スイツチを介して入力電源に接続し且つ第２の半
導体スイツチを介して接地し、インダクタンス素
子の他端Ｂを第３の半導体スイツチを介して入力
電源に接続し且つ第４の半導体スイツチを介して
接地し、第１の半導体スイツチと第２の半導体ス
イツチを交互にオン・オフするとともに、第１の
半導体スイツチがオン状態のとき第４の半導体ス
イツチをオン・オフし、第２の半導体スイツチが
オン状態のとき第３の半導体スイツチをオン・オ
フすることにより、インダクタンス素子の他端Ｂ
から、正方向に接続したダイオードを介して正電
圧を取り出し、負方向に接続したダイオードを介
して負電圧を取り出すように構成したことを特徴
とするスイツチング電源装置。1 One end A of the inductance element is connected to the input power source via the first semiconductor switch and grounded via the second semiconductor switch, and the other end B of the inductance element is connected to the input power source via the third semiconductor switch. connected and grounded via a fourth semiconductor switch, alternately turning on and off the first semiconductor switch and the second semiconductor switch, and turning on the fourth semiconductor switch when the first semiconductor switch is in the on state. The other end B of the inductance element is turned on and off, and when the second semiconductor switch is in the on state, the third semiconductor switch is turned on and off.
1. A switching power supply device characterized in that a positive voltage is extracted from a diode connected in a positive direction, and a negative voltage is extracted via a diode connected in a negative direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61292142A JPS63144763A (en) | 1986-12-08 | 1986-12-08 | Switching power source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61292142A JPS63144763A (en) | 1986-12-08 | 1986-12-08 | Switching power source |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63144763A JPS63144763A (en) | 1988-06-16 |
| JPH0256033B2 true JPH0256033B2 (en) | 1990-11-29 |
Family
ID=17778084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61292142A Granted JPS63144763A (en) | 1986-12-08 | 1986-12-08 | Switching power source |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63144763A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022019076A1 (en) | 2020-07-20 | 2022-01-27 | キヤノン株式会社 | Information processing device, information processing method, and program |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2451470B (en) * | 2007-07-31 | 2011-11-23 | Wolfson Microelectronics Plc | DC-TO-DC converter |
| GB2484012B (en) * | 2007-07-31 | 2012-05-23 | Wolfson Microelectronics Plc | DC-to-DC converter |
-
1986
- 1986-12-08 JP JP61292142A patent/JPS63144763A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022019076A1 (en) | 2020-07-20 | 2022-01-27 | キヤノン株式会社 | Information processing device, information processing method, and program |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63144763A (en) | 1988-06-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |