JPH0793814B2 - DC / DC converter device - Google Patents
DC / DC converter deviceInfo
- Publication number
- JPH0793814B2 JPH0793814B2 JP3814788A JP3814788A JPH0793814B2 JP H0793814 B2 JPH0793814 B2 JP H0793814B2 JP 3814788 A JP3814788 A JP 3814788A JP 3814788 A JP3814788 A JP 3814788A JP H0793814 B2 JPH0793814 B2 JP H0793814B2
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- variable
- output
- power supply
- pulse
- 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 - Fee Related
Links
- 239000003990 capacitor Substances 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Dc-Dc Converters (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、電圧を調整可能なDC/DCコンバータ装置に関
する。TECHNICAL FIELD The present invention relates to a DC / DC converter device capable of adjusting a voltage.
従来の技術 従来、この種のDC/DCコンバータ装置は、特開昭61−280
768号公報に示すように、パルス信号発生回路から異な
った位相で取り出された２つのパルス信号を、複数個の
ダイオード群及び複数個のコンデンサ群から成る逓倍整
流回路により逐次整流して定電圧の電源電圧から高電圧
を得るものが知られている。2. Description of the Related Art Conventionally, a DC / DC converter device of this type has been disclosed in JP-A-61-280.
As shown in Japanese Patent No. 768, two pulse signals extracted from a pulse signal generating circuit in different phases are successively rectified by a multiplying rectifier circuit composed of a plurality of diode groups and a plurality of capacitor groups to generate a constant voltage. It is known to obtain a high voltage from a power supply voltage.
また、他の従来のDC/DCコンバータ装置は、特開昭62−1
35261号公報に示すように、異なった２つの位相のパル
ス信号を取り出すパルス発生回路と、そのうち一方の位
相のパルス信号の振幅を可変できる機能を有する振幅可
変回路と、複数個のダイオード群及び複数個のコンデン
サ群とで前記パルス信号を逐次整流して定電圧の電源電
圧を得ることのできる逓倍整流回路を具備したものが知
られている。Another conventional DC / DC converter device is disclosed in Japanese Patent Laid-Open No. 62-1 / 1987.
As shown in Japanese Patent No. 35261, a pulse generation circuit for extracting pulse signals of two different phases, an amplitude variable circuit having a function of varying the amplitude of a pulse signal of one of the phases, a plurality of diode groups and a plurality of diode groups It is known to have a multiplying rectifier circuit capable of obtaining a constant power supply voltage by sequentially rectifying the pulse signal with each capacitor group.
上記のいずれの回路においても、複数個のダイオード群
及び複数個のコンデンサ群から成る逓倍整流回路により
逐次整流して低電圧の電源電圧から高電圧を得るため
に、スィチングレギュレータ型のDC−DCコンバータに比
べてリップルの少ない高電圧を得ることができる。In any of the above circuits, a switching regulator type DC-DC is used to obtain a high voltage from a low-voltage power supply voltage by sequentially rectifying it by a multiplying rectifier circuit consisting of a plurality of diode groups and a plurality of capacitor groups. It is possible to obtain a high voltage with less ripple than a converter.
発明が解決しようとする課題 しかしながら、上記従来のDC/DCコンバータ装置では、
低電圧すなわち電源電圧を逓倍するために出力電圧が電
源電圧の変動を受けやすく、また、逓倍整流回路がダイ
オードにより構成されているために周囲温度の影響を受
けやすく、したがって出力電圧が不安定であるという問
題点がある。However, in the conventional DC / DC converter device described above,
The output voltage is susceptible to fluctuations in the power supply voltage because it is a low voltage, that is, the power supply voltage is multiplied, and is also susceptible to ambient temperature because the multiplying rectifier circuit is composed of diodes, so the output voltage is unstable. There is a problem.
本発明は上記従来の問題点に鑑み、電源電圧や周囲温度
の変動にかかわらず安定した電圧を出力することができ
るDC/DCコンバータ装置を提供することを目的とする。In view of the above conventional problems, it is an object of the present invention to provide a DC / DC converter device capable of outputting a stable voltage regardless of fluctuations in power supply voltage and ambient temperature.
課題を解決するための手段 本発明は上記目的を達成するために、逓倍整流手段の出
力電圧を分圧し、この分圧された電圧と基準電圧の差に
より逓倍整流手段の出力電圧が一定になるように、パル
ス信号の電圧を可変で増幅する可変増幅手段の可変量を
制御するようにしたものである。Means for Solving the Problems To achieve the above object, the present invention divides the output voltage of the multiplying rectification means, and the output voltage of the multiplying rectification means becomes constant due to the difference between the divided voltage and the reference voltage. Thus, the variable amount of the variable amplifying means for variably amplifying the voltage of the pulse signal is controlled.
作 用 本発明は上記構成により、電源電圧や周囲温度の変動に
より逓倍整流手段の出力電圧が変動したときは、逓倍整
流手段の入力電圧を制御するために、電源電圧や周囲温
度の変動にかかわらず安定した電圧を出力することがで
きる。With the above configuration, the present invention controls the input voltage of the multiplying rectification means when the output voltage of the multiplying rectification means fluctuates due to the variation of the power supply voltage or the ambient temperature. Instead, a stable voltage can be output.
実施例 以下、図面を参照して本発明の実施例を説明する。第１
図は、本発明に係るDC/DCコンバータ装置の一実施例を
示すブロック図、第２図は、第１図のDC/DCコンバータ
装置の詳細な要部回路図である。Embodiments Embodiments of the present invention will be described below with reference to the drawings. First
FIG. 1 is a block diagram showing an embodiment of a DC / DC converter device according to the present invention, and FIG. 2 is a detailed main circuit diagram of the DC / DC converter device of FIG.
第１図において、１は、CR回路等により構成され、望ま
しくパルス占有率が50％のパルス信号を発生する発振器
（OSC）、２、３はそれぞれ、発振器１からのパルス信
号を正相、逆相でかつ同電圧で増幅する正相増幅器、逆
相増幅器である。In FIG. 1, reference numeral 1 is an oscillator (OSC) which is composed of a CR circuit or the like and generates a pulse signal with a pulse occupation ratio of 50%. These are positive-phase amplifiers and negative-phase amplifiers that amplify in phase and at the same voltage.
４、５はそれぞれ、正相増幅器２、逆相増幅器３により
増幅されたパルス信号を可変で増幅する可変増幅器であ
り、可変増幅器４、５の可変量はそれぞれ、後述する電
圧制御器６により制御される。Reference numerals 4 and 5 denote variable amplifiers that variably amplify the pulse signals amplified by the positive-phase amplifier 2 and the negative-phase amplifier 3, respectively. The variable amounts of the variable amplifiers 4 and 5 are controlled by a voltage controller 6 described later. To be done.
可変増幅器４、５はそれぞれ、第２図に示すようにベー
スが正相増幅器２、逆相増幅器３の出力端子に接続さ
れ、コレクタが逓倍整流回路８に接続されるとともに抵
抗R4、R5を介して電圧制御器６に接続され、エミッタが
接地されたトランジスタTr4、Tr5より構成されている。As shown in FIG. 2, the variable amplifiers 4 and 5 have bases connected to the output terminals of the positive-phase amplifier 2 and the negative-phase amplifier 3, respectively, and collectors connected to the multiplier rectifier circuit 8 and resistors R 4 and R 5. It is composed of transistors Tr 4 and Tr 5 each of which is connected to the voltage controller 6 via a transistor and whose emitter is grounded.
電圧制御器６は、第２図に示すようにベースが後述する
比較回路７の出力端子に接続され、コレクタがトランジ
スタTr62のベースに接続され、エミッタが接地されたNP
N型のトランジスタTr61と、エミッタに電源電圧EBに入
力し、コレクタが抵抗R4、R5を介してそれぞれ可変増幅
器４、５に接続されたPNP型のトランジスタTr62より構
成されている。As shown in FIG. 2, the voltage controller 6 has an NP whose base is connected to the output terminal of the comparator circuit 7 described later, whose collector is connected to the base of the transistor Tr 62, and whose emitter is grounded.
It is composed of an N-type transistor Tr 61 and a PNP-type transistor Tr 62 whose emitter is input to the power supply voltage E B and whose collector is connected to the variable amplifiers 4 and 5 via resistors R 4 and R 5 , respectively. .
12は、電源電圧EBが入力するダイオード、８は、ダイオ
ード12からの電源電圧EBを逓倍する逓倍整流回路であ
り、逓倍整流回路８は、第２図に示すように、それぞれ
直列に接続されたダイオードD1〜Dnと、一端がそれぞれ
可変増幅器４のトランジスタTr4のコレクタに接続さ
れ、他端がダイオードD1、D3〜Dn-1の入力側に接続され
たコンデンサC1、C3〜Cn-1と、一端がそれぞれ可変増幅
器５のトランジスタTr5のコレクタに接続され、他端が
ダイオードD2、D4〜Dnの入力側に接続されたコンデンサ
C2、C4〜Dnより構成されている。Reference numeral 12 is a diode to which the power supply voltage E B is input, 8 is a multiplication rectification circuit that multiplies the power supply voltage E B from the diode 12, and the multiplication rectification circuit 8 is connected in series as shown in FIG. The diodes D 1 to Dn and the capacitors C 1 and C having one ends connected to the collectors of the transistors Tr 4 of the variable amplifier 4 and the other ends connected to the input sides of the diodes D 1 and D 3 to Dn −1. 3 to Cn -1 and a capacitor having one end connected to the collector of the transistor Tr 5 of the variable amplifier 5 and the other end connected to the input side of the diodes D 2 and D 4 to Dn
It is composed of C 2 and C 4 to Dn.
尚、ダイオード（D1、D2）、（D3、D4）〜（Dn-1、Dn）
はそれぞれ、トゥインダイオードで構成することができ
る。In addition, diodes (D 1 , D 2 ), (D 3 , D 4 ) to (Dn -1 , Dn)
Each can be composed of a twin diode.
９は、逓倍整流回路８の出力（ダイオードDnの出力）の
交流成分を除去するリップルフィルタであり、リップル
フィルタ９は、第２図に示すようなRC回路により構成さ
れる。Reference numeral 9 is a ripple filter for removing an AC component of the output of the multiplier rectifier circuit 8 (output of the diode Dn). The ripple filter 9 is composed of an RC circuit as shown in FIG.
10は、リップルフィルタ９の出力電圧E0の出力端子、11
は、出力電圧E0を分圧をする分圧器、７は、分圧器11に
より分圧された電圧E0/dと、電源電圧EBから得られる基
準電圧ES比較し、その差を電圧制御器６のトランジスタ
Tr61のベースに印加する電圧比較器である。10 is an output terminal of the output voltage E 0 of the ripple filter 9, 11
Is a voltage divider that divides the output voltage E 0 , and 7 compares the voltage E 0 / d divided by the voltage divider 11 with a reference voltage E S obtained from the power supply voltage E B , and the difference is the voltage. Transistor of controller 6
This is a voltage comparator applied to the base of Tr 61 .
次に、上記実施例の動作を説明する。Next, the operation of the above embodiment will be described.
第２図において、可変増幅器４、５から180度位相の異
なる電圧がそれぞれ逓倍整流回路８に印加されると、従
来例で示す特開昭61−280768号公報及び特開昭62−1352
61号公報と同様に、電源電圧EBは、可変増幅器４、５の
出力電圧及び逓倍整流回路８のダイオードとコンデンサ
の段数に応じて逓倍され、リップルフィルタ９を介して
出力電圧E0として端子10に出力される。In FIG. 2, when voltages having different phases of 180 degrees from the variable amplifiers 4 and 5 are applied to the multiplying rectifier circuit 8, Japanese Patent Laid-Open No. 61-280768 and Japanese Patent Laid-Open No. 62-1352 show conventional examples.
In the same manner as in Japanese Patent No. 61, the power supply voltage E B is multiplied according to the output voltage of the variable amplifiers 4 and 5 and the number of stages of the diode and the capacitor of the multiplying rectifier circuit 8, and the output voltage E 0 is output as a terminal via the ripple filter 9. Output to 10.
この場合、電源電圧EBが高くなったり、周囲温度が高く
なると、出力電圧E0が高くなるが、電圧比較器７の出力
電圧が低くなり、電圧制御器６において電源電圧EBがト
ランジスタTr62のエミッタ→ベース→トランジスタTr61
のエミッタに余分に流れ、したがって、トランジスタTr
62のコレクタから可変増幅器４、５に流れる電圧が低く
なり、出力電圧E0が低くなる。In this case, when the power supply voltage E B becomes higher or the ambient temperature becomes higher, the output voltage E 0 becomes higher, but the output voltage of the voltage comparator 7 becomes lower, and the power supply voltage E B in the voltage controller 6 becomes lower than the transistor Tr. 62 emitter → base → transistor Tr 61
Flowing into the emitter of the transistor Tr
The voltage flowing from the collector of 62 to the variable amplifiers 4 and 5 becomes low, and the output voltage E 0 becomes low.
他方、電源電圧EBが低くなったり、周囲温度が低くなる
と、出力電圧E0が低くなるが、上記動作とは逆に、トラ
ンジスタTr62のコレクタから可変増幅器４、５に流れる
電圧が高くなり、出力で圧E0が高くなる。On the other hand, when the power supply voltage E B becomes low or the ambient temperature becomes low, the output voltage E 0 becomes low, but contrary to the above operation, the voltage flowing from the collector of the transistor Tr 62 to the variable amplifiers 4 and 5 becomes high. , Output pressure E 0 becomes high.
したがって、上記実施例によれば、電源電圧EBや周囲温
度の変動にかかわらず安定した出力電圧E0を得ることが
できる。Therefore, according to the above-described embodiment, the stable output voltage E 0 can be obtained regardless of the fluctuations of the power supply voltage E B and the ambient temperature.
尚、上記実施例によれば、基準電圧ESを任意に選択する
ことにより電圧調整器４、５の出力電圧を任意に選択す
ることができ、したがって、任意の出力電圧E0を得るこ
とができる。According to the above-described embodiment, the output voltage of the voltage regulators 4 and 5 can be arbitrarily selected by arbitrarily selecting the reference voltage E S , so that the arbitrary output voltage E 0 can be obtained. it can.
発明の効果 以上説明したように、本発明は、逓倍整流手段の出力電
圧を分圧し、この分圧された電圧と基準電圧の差により
逓倍整流手段の出力電圧が一定になるように、パルス信
号の電圧を可変で増幅する可変増幅手段の可変量を制御
するようにしたので、電源電圧や周囲温度の変動にかか
わらず安定した電圧を出力することができる。As described above, the present invention divides the output voltage of the multiplying rectifying means, and the pulse signal so that the output voltage of the multiplying rectifying means becomes constant due to the difference between the divided voltage and the reference voltage. Since the variable amount of the variable amplifying means for variably amplifying the voltage is controlled, it is possible to output a stable voltage regardless of fluctuations in the power supply voltage and the ambient temperature.
第１図は、本発明に係るDC/DCコンバータ装置の一実施
例を示すブロック図、第２図は、第１図のDC/DCコンバ
ータ装置の詳細な要部回路図である。 １……発振器、２……正相増幅器、３……逆相増幅器、
４、５……可変増幅器、６……電圧制御器、７……電圧
比較器、８……逓倍整流回路、９……リップルフィル
タ、11……分圧器。FIG. 1 is a block diagram showing an embodiment of a DC / DC converter device according to the present invention, and FIG. 2 is a detailed main part circuit diagram of the DC / DC converter device of FIG. 1 ... Oscillator, 2 ... Positive phase amplifier, 3 ... Negative phase amplifier,
4, 5 ... Variable amplifier, 6 ... Voltage controller, 7 ... Voltage comparator, 8 ... Multiplying rectifier circuit, 9 ... Ripple filter, 11 ... Voltage divider.
Claims (1)
るパルス発生手段と、前記パルス信号の電圧を可変で増
幅する可変増幅手段と、複数個のダイオード群及び複数
個のコンデンサ群により前記パルス信号を逐次整流して
電源電圧を逓倍し、高電圧として出力する逓倍整流手段
と、前記逓倍整流手段の出力電圧を分圧する分圧手段
と、前記分圧手段により分圧された電圧と基準電圧の差
により前記逓倍整流手段の出力電圧が一定になるように
前記可変増幅手段の可変量を制御する手段とを有するDC
/DCコンバータ装置。1. A pulse generating means for generating pulse signals of two different phases, a variable amplifying means for variably amplifying the voltage of the pulse signal, a plurality of diode groups and a plurality of capacitor groups for the pulse. A multiplying rectifying unit that sequentially rectifies a signal to multiply a power supply voltage and outputs a high voltage, a voltage dividing unit that divides an output voltage of the multiplying rectifying unit, a voltage divided by the voltage dividing unit, and a reference voltage. And a means for controlling the variable amount of the variable amplifying means so that the output voltage of the multiplying rectifying means becomes constant by the difference between
/ DC converter device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3814788A JPH0793814B2 (en) | 1988-02-19 | 1988-02-19 | DC / DC converter device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3814788A JPH0793814B2 (en) | 1988-02-19 | 1988-02-19 | DC / DC converter device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01214259A JPH01214259A (en) | 1989-08-28 |
| JPH0793814B2 true JPH0793814B2 (en) | 1995-10-09 |
Family
ID=12517307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3814788A Expired - Fee Related JPH0793814B2 (en) | 1988-02-19 | 1988-02-19 | DC / DC converter device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0793814B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05336735A (en) * | 1992-05-28 | 1993-12-17 | Nec Kansai Ltd | Step-up circuit |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5760864B2 (en) | 2011-08-30 | 2015-08-12 | 日産自動車株式会社 | Power converter |
-
1988
- 1988-02-19 JP JP3814788A patent/JPH0793814B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5760864B2 (en) | 2011-08-30 | 2015-08-12 | 日産自動車株式会社 | Power converter |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01214259A (en) | 1989-08-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |