JPS6216074A - Auxiliary power supply circuit for switching regulator - Google Patents
Auxiliary power supply circuit for switching regulatorInfo
- Publication number
- JPS6216074A JPS6216074A JP15400685A JP15400685A JPS6216074A JP S6216074 A JPS6216074 A JP S6216074A JP 15400685 A JP15400685 A JP 15400685A JP 15400685 A JP15400685 A JP 15400685A JP S6216074 A JPS6216074 A JP S6216074A
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- auxiliary power
- circuit
- auxiliary
- 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.)
- Pending
Links
Landscapes
- Dc-Dc Converters (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明はスイッチングレギエレータの消費電力を低減す
る補助電源回路に係シ、特に小形、高効率を必要とする
スイッチングレギュレータに好適な補助電源回路に関す
る。[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to an auxiliary power supply circuit that reduces power consumption of a switching regulator, and is particularly suitable for a switching regulator that requires small size and high efficiency. Regarding.
従来のスイッチングレギ為レークにおける補助電源回路
としては１例えば、電子科学誌１９７８年３月号の８９
頁「小容量電源設計例」和樹賢に記載されているように
、シリーズドロッパ回路やリンギングチ冒−り型Ｄ Ｃ
７０Ｃコンバータが公知である。As an auxiliary power supply circuit for conventional switching regulators, see 1, for example, 89 of the March 1978 issue of Electronic Science Magazine.
As described in page ``Small capacity power supply design example'' by Masaru Kazuki, series dropper circuits and ringing circuit type DC
70C converters are known.
この種の補助電源回路は、電力損失が少なく高効率で、
しかも回路構成が簡単で経済的であることが要求されて
いる。この点からみて、従来のシリーズドロッパ回路は
電力損失が大きく冷却方法が問題となってお）、リンギ
ングチ四−り型ＤＣ・／ＤＣコンバータは部品点数が多
いという問題があるＯ
〔発明の目的〕
本発明の目的は、回路構成が簡易で電力損失の少ない補
助電源回路を提供することにある。This kind of auxiliary power circuit has low power loss and high efficiency,
Furthermore, it is required that the circuit configuration be simple and economical. From this point of view, conventional series dropper circuits have a problem of high power loss and cooling methods), and ringing-chip four-way DC/DC converters have a problem of having a large number of parts. [Object of the Invention] An object of the present invention is to provide an auxiliary power supply circuit with a simple circuit configuration and low power loss.
本発明では、トランジスタ、抵抗および定電圧ダイオー
ドからなるシリーズドロッパ回路を、鳥（１の補助電源
としてインバータを起動し、以後は出力チ璽−クトラン
スに発生する電力の一部を２次巻線から増シ出して第２
の補助電源とし、この電力を制御回路やドライブ回路へ
供給するようにする。In the present invention, a series dropper circuit consisting of a transistor, a resistor, and a voltage regulator diode is used as an auxiliary power source to start the inverter, and from then on, a part of the power generated in the output voltage transformer is transferred from the secondary winding. 2nd increase
This power is used as an auxiliary power source for the control circuit and drive circuit.
以下、本発明の一実施例を図面を参照して説明する。 Hereinafter, one embodiment of the present invention will be described with reference to the drawings.
図において、１け入力電源、２け第１の補助電源部、３
はシリーズドロッパ回路の電流制限用抵抗、４け定電圧
ダイオード６の動作抵抗、５は入力電源１の電圧を降下
するトランジスタ、６は出力電圧設定用定電圧ダイオー
ド、７はトランジスタ５の逆耐圧防止用ダイオード、８
け制御回路およびドライブ回路部、９は電力交換用トラ
ンス、１０はトランス９のリセットダイオード、１１は
スイッチング用主トランジスタ、１２け整流用ダイオー
ド、１３Ｆｉ出力チツークトランス１４に蓄えられたエ
ネルギーを転流するだめの転流用ダイオード、１４けイ
ンバータ２０から出力するパルスを平滑するだめの出力
チ叢−クトランス、１５は出力平滑用コンデンサ、１６
は第２の補助電源部、１７Ｆｉ第２の補助電源電圧の平
滑用コンデンサ、１８は第２の補助電源電圧の整流用ダ
イオード、１９け出力電圧の誤差を検出するだめの誤差
検出増幅器、２０けインバータ部である。In the figure, 1 digit input power supply, 2 digits first auxiliary power supply section, 3
is the current limiting resistor of the series dropper circuit, the operating resistance of the 4-digit constant voltage diode 6, 5 is the transistor that drops the voltage of the input power supply 1, 6 is the constant voltage diode for setting the output voltage, and 7 is the reverse voltage prevention prevention of the transistor 5. diode, 8
control circuit and drive circuit section, 9 is a power exchange transformer, 10 is a reset diode of the transformer 9, 11 is a main transistor for switching, 12 is a rectifier diode, 13 is a converter for commutating the energy stored in the Fi output check transformer 14. 15 is a commutating diode, 14 is an output checker transformer for smoothing the pulses output from the inverter 20, 15 is an output smoothing capacitor, 16 is
17 is a second auxiliary power supply section, 17Fi is a smoothing capacitor for the second auxiliary power supply voltage, 18 is a rectifying diode for the second auxiliary power supply voltage, 19 is an error detection amplifier for detecting errors in the output voltage, and 20 is an error detection amplifier for detecting errors in the output voltage. This is the inverter section.
この構成で、入力電源１の投入直後は、第１の補助電源
２で制御回路およびドライブ回路８へ電力が供給されイ
ンバータ部２０が起動される。この第１の補助電源２け
シリーズドロッパ回路のため消費電力が大きく、熱を発
生して部品の信頼性を損うことになる。しかるく１本実
施例では、インバータ部２０が起動されると、第２の補
助電源１６から制御回路およびドライブ回路８へ電力が
供給される。このように、出力電圧の一部が入力へ帰還
される為、電力の損失が大巾に低減される。With this configuration, immediately after the input power source 1 is turned on, the first auxiliary power source 2 supplies power to the control circuit and the drive circuit 8, and the inverter section 20 is activated. This first auxiliary power supply two-piece series dropper circuit consumes a large amount of power and generates heat, which impairs the reliability of the components. However, in this embodiment, when the inverter section 20 is activated, power is supplied from the second auxiliary power source 16 to the control circuit and the drive circuit 8. In this way, a portion of the output voltage is fed back to the input, thereby significantly reducing power loss.
ここで、第２の補助電源１６では、出力チ冒−クトラン
ス１４の２次巻線から得られたパルス電圧を、ダイオー
ド１８とコンデンサ１７で直流電圧に変換し、これを回
路８に帰還している。また。Here, in the second auxiliary power supply 16, the pulse voltage obtained from the secondary winding of the output circuit transformer 14 is converted into a DC voltage by a diode 18 and a capacitor 17, and this is fed back to the circuit 8. There is. Also.
第１の補助電源２と第２の補助電源１６とはワイアード
オア（第１と第１の補助電源回路を接続）し、第１の補
助電源電圧よ）も第２の補助電源電圧を高めに設定しで
あるため、起動待以外は、第２の補助電源１６からだけ
電力が供給される。この時、ダイオード７がトランジス
タ５の逆耐圧防止用として作用している。The first auxiliary power supply 2 and the second auxiliary power supply 16 are wired-ored (connecting the first and first auxiliary power supply circuits), and the first auxiliary power supply voltage is also set to a higher voltage than the second auxiliary power supply voltage. Since this is set, power is supplied only from the second auxiliary power source 16 except when waiting for startup. At this time, the diode 7 acts to prevent the reverse breakdown voltage of the transistor 5.
このように、本実施例によれば、出力チ冒−クトランス
１４に２次巻線を設けることで、簡単に第２の補助電源
１６を構成することができ、出力電力を入力へ帰還する
ことで大巾に補助電源の消費電力を低減することができ
る。As described above, according to the present embodiment, by providing the secondary winding in the output cross transformer 14, the second auxiliary power supply 16 can be easily configured, and the output power can be fed back to the input. The power consumption of the auxiliary power supply can be significantly reduced.
本発明によれば、簡単な回路で経済的に、制御回路およ
びドライブ回路に供給する電力を低減することができる
。According to the present invention, the power supplied to the control circuit and the drive circuit can be reduced economically with a simple circuit.
図は、本発明の一実施例に係る補助電源回路の構成図で
ある。The figure is a configuration diagram of an auxiliary power supply circuit according to an embodiment of the present invention.
Claims (1)
の補助電源で起動されるインバータの駆動制御回路と前
記インバータの起動後は前記第１の補助電源の代りに前
記インバータの出力の一部を前記駆動制御回路に帰還し
て前記インバータを駆動する第２の補助電源とを備える
ことを特徴とするスイッチングレギュレータの補助電源
回路。a first auxiliary power supply consisting of a series dropper circuit;
a drive control circuit for an inverter that is started by an auxiliary power source; and a first drive control circuit that, after starting the inverter, returns a part of the output of the inverter to the drive control circuit instead of the first auxiliary power source to drive the inverter. 1. An auxiliary power supply circuit for a switching regulator, comprising: two auxiliary power supplies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15400685A JPS6216074A (en) | 1985-07-15 | 1985-07-15 | Auxiliary power supply circuit for switching regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15400685A JPS6216074A (en) | 1985-07-15 | 1985-07-15 | Auxiliary power supply circuit for switching regulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6216074A true JPS6216074A (en) | 1987-01-24 |
Family
ID=15574849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15400685A Pending JPS6216074A (en) | 1985-07-15 | 1985-07-15 | Auxiliary power supply circuit for switching regulator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6216074A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4866590A (en) * | 1987-09-18 | 1989-09-12 | Hitachi, Ltd. | Supply having a load invariant auxiliary power supply supplied from a main transformer and a current suppressing inductor |
| JPH02184264A (en) * | 1989-01-09 | 1990-07-18 | Fujitsu Denso Ltd | Switching power source device |
| JPH03124779U (en) * | 1990-03-27 | 1991-12-17 | ||
| JPH04117168A (en) * | 1990-09-04 | 1992-04-17 | Fanuc Ltd | Switching regulator |
-
1985
- 1985-07-15 JP JP15400685A patent/JPS6216074A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4866590A (en) * | 1987-09-18 | 1989-09-12 | Hitachi, Ltd. | Supply having a load invariant auxiliary power supply supplied from a main transformer and a current suppressing inductor |
| JPH02184264A (en) * | 1989-01-09 | 1990-07-18 | Fujitsu Denso Ltd | Switching power source device |
| JPH03124779U (en) * | 1990-03-27 | 1991-12-17 | ||
| JPH04117168A (en) * | 1990-09-04 | 1992-04-17 | Fanuc Ltd | Switching regulator |
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