JP2002041157A - Voltage controller - Google Patents
Voltage controllerInfo
- Publication number
- JP2002041157A JP2002041157A JP2000227705A JP2000227705A JP2002041157A JP 2002041157 A JP2002041157 A JP 2002041157A JP 2000227705 A JP2000227705 A JP 2000227705A JP 2000227705 A JP2000227705 A JP 2000227705A JP 2002041157 A JP2002041157 A JP 2002041157A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- output
- converter
- circuit
- signal
- 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
- Control Of Electrical Variables (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は電圧調整装置に関
し、特に、電圧調整を開始する信号を外部より受け、所
定の基準値以下になるよう制御する電圧調整装置に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a voltage regulator, and more particularly to a voltage regulator which receives a signal for starting voltage adjustment from outside and controls the voltage to be less than a predetermined reference value.
【０００２】[0002]
【従来の技術】従来の電圧調整装置のブロック構成を図
４に示す。2. Description of the Related Art FIG. 4 shows a block diagram of a conventional voltage regulator.
【０００３】図４を参照すると、従来の電圧調整装置４
００は、任意の出力電圧Ｖｏｕｔを調整するオペアンプ
４０２と、必要な出力電圧になるようにトリマー４０１
とを具備している。そして、この出力電圧Ｖｏｕｔ４０
３の制御は、出力電圧Ｖｏｕｔ４０３を人が監視し、必
要な出力電圧になるようにトリマー４０１を人の手で調
節して、任意の出力電圧Ｖｏｕｔを得ていた。Referring to FIG. 4, a conventional voltage regulator 4
00 is an operational amplifier 402 for adjusting an arbitrary output voltage Vout, and a trimmer 401 for adjusting the output voltage to a required output voltage.
Is provided. Then, the output voltage Vout40
In the control of No. 3, the output voltage Vout 403 is monitored by a person, and the trimmer 401 is manually adjusted so that the output voltage becomes a required output voltage, thereby obtaining an arbitrary output voltage Vout.
【０００４】このような従来の電圧調整装置は、例え
ば、特開平１１−０４１８０２号公報に開示されてい
る。[0004] Such a conventional voltage regulator is disclosed, for example, in Japanese Patent Application Laid-Open No. H11-041802.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、この種
の電圧調整装置では、アナログ的に電圧を調整できる
が、トリマーを使用しているため、調整を行い、その
後、実装してしまうと、トリマーの位置が振動などによ
って変化してしまっても、再調整することが困難である
という課題があった。However, in this type of voltage adjusting device, the voltage can be adjusted in an analog manner. However, since a trimmer is used, if the adjustment is performed and then the trimming is performed, the voltage of the trimmer is reduced. Even if the position changes due to vibration or the like, there is a problem that it is difficult to readjust.
【０００６】したがって、本発明は、上記課題を解決す
るために、外部からのＳＷ入力によって、自動的に必要
な任意の出力電圧に調整する事の出来る電圧調整装置を
提供することを目的とする。SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a voltage regulator capable of automatically adjusting a required output voltage by an external SW input to solve the above-mentioned problem. .
【０００７】[0007]
【課題を解決するための手段】本発明の電圧調整装置
は、電圧調整を開始する信号を外部より受ける入力ＳＷ
回路と、所定の目標電圧を記憶するＲＯＭと、出力信号
の電圧レベルを調整する電圧調整回路と、前記出力信号
の電圧レベルを検出するＡ／Ｄ変換器と、前記Ａ／Ｄ変
換器の出力と前記所定の目標電圧とを比較し、所定の基
準値以下になるよう前記電圧調整回路を制御するＣＰＵ
とを具備する構成である。According to the present invention, there is provided a voltage adjusting apparatus comprising: an input switch for receiving a signal for starting voltage adjustment from outside;
Circuit, a ROM for storing a predetermined target voltage, a voltage adjustment circuit for adjusting the voltage level of the output signal, an A / D converter for detecting the voltage level of the output signal, and an output of the A / D converter And a CPU that controls the voltage adjustment circuit so that the voltage is equal to or less than a predetermined reference value.
It is a configuration provided with:
【０００８】また、本発明の電圧調整装置の前記電圧調
整回路は、Ｄ／Ａ変換器である構成とすることもでき
る。Further, the voltage adjusting circuit of the voltage adjusting apparatus according to the present invention may be configured to be a D / A converter.
【０００９】さらに、本発明の電圧調整装置の前記電圧
調整回路の制御は、前記Ａ／Ｄ変換器の出力と前記所定
の目標電圧とを比較し、所定の基準値以上で、前記Ａ／
Ｄ変換器の出力が前記所定の目標電圧より小さい時は、
前記所定の基準値を前記電圧調整回路の出力に加えて、
前記出力信号の電圧レベルとする構成とすることもでき
る。さらにまた、本発明の電圧調整装置の前記電圧調整
回路の制御は、前記Ａ／Ｄ変換器の出力と前記所定の目
標電圧とを比較し、所定の基準値以上で、前記Ａ／Ｄ変
換器の出力が前記所定の目標電圧より大きい時は、前記
所定の基準値を前記電圧調整回路の出力から引いて、前
記出力信号の電圧レベルとする構成とすることもでき
る。Further, in the control of the voltage adjusting circuit of the voltage adjusting apparatus according to the present invention, the output of the A / D converter is compared with the predetermined target voltage.
When the output of the D converter is smaller than the predetermined target voltage,
Adding the predetermined reference value to the output of the voltage adjustment circuit,
A configuration may be adopted in which the output signal has the voltage level. Still further, the control of the voltage adjusting circuit of the voltage adjusting apparatus according to the present invention includes comparing the output of the A / D converter with the predetermined target voltage, and determining whether the output of the A / D converter is equal to or more than a predetermined reference value. When the output is higher than the predetermined target voltage, the predetermined reference value may be subtracted from the output of the voltage adjustment circuit to obtain the voltage level of the output signal.
【００１０】[0010]
【発明の実施の形態】次に、本発明にかかる電圧調整装
置の一実施の形態について図面を参照して詳細に説明す
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a voltage regulator according to the present invention will be described in detail with reference to the drawings.
【００１１】図１は、本発明にかかる電圧調整装置の一
実施の形態を示すブロック構成図であり、図２は、図１
に示した電圧調整装置の調整方法を説明するためのフロ
ーチャートであり、図３は、図１に示した電圧調整装置
の動作を説明するための波形図である。FIG. 1 is a block diagram showing an embodiment of a voltage adjusting apparatus according to the present invention, and FIG.
FIG. 3 is a flowchart for explaining an adjusting method of the voltage adjusting device shown in FIG. 3, and FIG. 3 is a waveform diagram for explaining an operation of the voltage adjusting device shown in FIG.
【００１２】図１を参照すると、本発明の一実施の形態
の電圧調整装置１００は、この電圧調整装置１００の出
力電圧Ｖ２を出力する電圧調整回路１１と、出力電圧Ｖ
２を検知し、出力電圧Ｖ２をアナログ・デジタル変換す
るＡ／Ｄ変換器１２と、Ａ／Ｄ変換器１２の出力と目標
電圧とを比較し、電圧調整回路１１を制御するＣＰＵ１
３と、外部からの電圧調整開始信号を受け、出力電圧調
整を開始するための入力スイッチ回路１４と、前記目標
電圧を記憶するＲＯＭ１５とを備える。Referring to FIG. 1, a voltage adjusting device 100 according to an embodiment of the present invention includes a voltage adjusting circuit 11 for outputting an output voltage V2 of the voltage adjusting device 100;
, An A / D converter 12 for detecting the output voltage V2 and converting the output voltage V2 from analog to digital, and a CPU 1 for comparing the output of the A / D converter 12 with the target voltage and controlling the voltage adjustment circuit 11.
3, an input switch circuit 14 for receiving an external voltage adjustment start signal and starting output voltage adjustment, and a ROM 15 for storing the target voltage.
【００１３】次に、図２を参照して、本発明の一実施の
形態の電圧調整装置１００の出力電圧の調整方法を説明
する。Next, a method for adjusting the output voltage of the voltage adjusting apparatus 100 according to one embodiment of the present invention will be described with reference to FIG.
【００１４】まず、ＣＰＵ１３が、電圧調整開始入力Ｓ
Ｗ回路１４から信号を受け、出力信号の電圧レベルを所
定の目標電圧とを比較し、所定の基準値以下（ステップ
２）の動作を行うか、処理を終了するか判断する（ステ
ップ１）。First, the CPU 13 sets the voltage adjustment start input S
Upon receiving the signal from the W circuit 14, the voltage level of the output signal is compared with a predetermined target voltage, and it is determined whether the operation is performed at a predetermined reference value or less (Step 2) or the processing is terminated (Step 1).
【００１５】ステップ２では、電圧調整開始入力ＳＷ回
路１４がＯＮの場合、Ａ／Ｄ変換器１２から出力電圧Ｖ
２読み込み、ＲＯＭ１５に記録されている任意の出力電
圧目標値Ｖ１とを比較し、｜Ｖ１−Ｖ２｜が基準値ΔＶ
よりも大きい場合は、ステップ３の動作を行い、｜Ｖ１
−Ｖ２｜が基準値ΔＶよりも小さい場合は処理を終了す
るか判断する。In step 2, when the voltage adjustment start input SW circuit 14 is ON, the output voltage V is output from the A / D converter 12.
2 is read and compared with an arbitrary output voltage target value V1 recorded in the ROM 15, and | V1-V2 |
If it is larger than the value, the operation of step 3 is performed, and | V1
If −V2 | is smaller than the reference value ΔV, it is determined whether to end the process.
【００１６】ステップ３では、Ａ／Ｄ変換器１２から読
み込んだ出力電圧Ｖ２と、ＲＯＭ１５に記録されている
任意の出力電圧目標値Ｖ１とを比較し、Ｖ１＞Ｖ２なら
ばステップ４に移行し、Ｖ１＜Ｖ２ならばステップ５に
移行する。In step 3, the output voltage V2 read from the A / D converter 12 is compared with an arbitrary output voltage target value V1 recorded in the ROM 15, and if V1> V2, the process proceeds to step 4. If V1 <V2, the process proceeds to step 5.
【００１７】ステップ４では、電圧調整回路１１により
基準値ΔＶだけ加算しステップ２に戻る逐次加算を行
う。In step 4, the voltage adjustment circuit 11 adds the reference value ΔV and sequentially returns to step 2.
【００１８】ステップ５では、電圧調整回路１１により
ΔＶだけ減算しステップ２に戻る逐次減算を行う。In step 5, the voltage adjustment circuit 11 performs a sequential subtraction by subtracting ΔV and returning to step 2.
【００１９】次に、外部からの電圧調整開始信号が、周
期信号の場合について、図３を参照して、本発明の一実
施の形態の電圧調整装置１００の動作を説明する。Next, the operation of the voltage adjusting apparatus 100 according to one embodiment of the present invention will be described with reference to FIG. 3 in the case where the external voltage adjustment start signal is a periodic signal.
【００２０】外部からの電圧調整開始信号を時刻ｔ０１
でスイッチ回路１４がオンすると、図２に示したフロー
に従って動作を行い、出力電圧Ｖ２を目標電圧Ｖ１に逐
次的に漸近させる。An external voltage adjustment start signal is sent at time t01.
When the switch circuit 14 is turned on, the operation is performed according to the flow shown in FIG. 2, and the output voltage V2 is gradually asymptotically approached to the target voltage V1.
【００２１】この状態で電圧調整装置１００は、制御さ
れるが、外部からの電圧調整開始信号が、周期的に変化
をし、時刻ｔ０２でスイッチ回路１４がオフすると、出
力電圧Ｖ２は、電源等のノイズを受け、目標電圧値Ｖ１
からずれる。時刻ｔ０３で、再度、スイッチ回路１４が
オンすると、図２に示したフローに従って動作を行い、
出力電圧Ｖ２を目標電圧Ｖ１に逐次的に漸近させる。In this state, the voltage regulator 100 is controlled, but the voltage regulation start signal from the outside periodically changes, and when the switch circuit 14 is turned off at time t02, the output voltage V2 becomes Of the target voltage V1
Deviate. When the switch circuit 14 is turned on again at time t03, the operation is performed according to the flow shown in FIG.
The output voltage V2 is made to gradually approach the target voltage V1.
【００２２】なお、この実施の形態は、外部からの電圧
調整開始信号を周期的な信号で説明したが、ワンショッ
トパルスの信号でも、同様の動作をすることは、当業者
にとっては自明であるので、詳細な説明は、省略する。In this embodiment, the voltage adjustment start signal from the outside is described as a periodic signal. However, it is obvious to those skilled in the art that the same operation is performed even with a one-shot pulse signal. Therefore, detailed description is omitted.
【００２３】[0023]
【発明の効果】以上の説明から明らかなように、外部か
らのＳＷ入力によって、自動的に必要な任意の出力電圧
に調整する事が出来る。As is apparent from the above description, the required output voltage can be automatically adjusted to the required output voltage by the external SW input.
【００２４】このことにより、トリマーを使用しないた
め、人の手による微調整を必要とせず、さらに、ケース
などに組み込んだ後も容易に外部ＳＷにより再調整する
ことが可能になる。This eliminates the need for manual fine adjustment because no trimmer is used, and makes it possible to easily readjust it with an external switch even after it is assembled in a case or the like.
【図１】本発明の一実施形態による電圧調整装置を示す
ブロック図である。FIG. 1 is a block diagram illustrating a voltage regulator according to an embodiment of the present invention.
【図２】図１に示した電圧調整装置の動作を説明するフ
ローチャートである。FIG. 2 is a flowchart illustrating an operation of the voltage regulator illustrated in FIG. 1;
【図３】図２に示した電圧調整装置の動作を説明するた
めの波形図である。FIG. 3 is a waveform chart for explaining an operation of the voltage regulator shown in FIG. 2;
【図４】従来の電圧調整装置を示すブロック図である。FIG. 4 is a block diagram showing a conventional voltage regulator.
１００，４００ 電圧調整装置 １１ 電圧調整回路 １２ Ａ／Ｄ変換器 １３ ＣＰＵ １４ 電圧調整開始入力ＳＷ １５ ＲＯＭ １６ 出力Ｖ２端子 １７ 外部からの電圧調整開始信号入力端子 １８ 電圧調整開始ＳＷ ４０１ トリマー ４０２ オペアンプ ４０３ Ｖｏｕｔ 100, 400 Voltage adjustment device 11 Voltage adjustment circuit 12 A / D converter 13 CPU 14 Voltage adjustment start input SW 15 ROM 16 Output V2 terminal 17 External voltage adjustment start signal input terminal 18 Voltage adjustment start SW 401 Trimmer 402 Operational amplifier 403 Vout
Claims (6)
る入力ＳＷ回路と、 所定の目標電圧を記憶するＲＯＭと、出力信号の電圧レ
ベルを調整する電圧調整回路と、前記出力信号の電圧レ
ベルを検出するＡ／Ｄ変換器と、前記Ａ／Ｄ変換器の出
力と前記所定の目標電圧とを比較し、所定の基準値以下
になるよう前記電圧調整回路を制御するＣＰＵとを具備
することを特徴とする電圧調整装置。An input SW circuit for receiving a signal for starting voltage adjustment from outside, a ROM for storing a predetermined target voltage, a voltage adjustment circuit for adjusting a voltage level of an output signal, and a voltage adjustment circuit for adjusting a voltage level of the output signal. An A / D converter to be detected, and a CPU that compares the output of the A / D converter with the predetermined target voltage and controls the voltage adjustment circuit so as to be equal to or less than a predetermined reference value. Characteristic voltage regulator.
る請求項１記載の電圧調整装置。2. The voltage adjustment device according to claim 1, wherein the voltage adjustment circuit is a D / A converter.
変換器の出力と前記所定の目標電圧とを比較し、所定の
基準値以上で、前記Ａ／Ｄ変換器の出力が前記所定の目
標電圧より小さい時は、前記所定の基準値を前記電圧調
整回路の出力に加えて、前記出力信号の電圧レベルとす
る請求項１または２記載の電圧調整装置。3. The control of the voltage adjustment circuit is performed by the A / D
The output of the converter is compared with the predetermined target voltage. When the output of the A / D converter is equal to or more than a predetermined reference value and the output of the A / D converter is smaller than the predetermined target voltage, the predetermined reference value is adjusted to the voltage. 3. The voltage regulator according to claim 1, wherein a voltage level of the output signal is set in addition to an output of the circuit.
変換器の出力と前記所定の目標電圧とを比較し、所定の
基準値以上で、前記Ａ／Ｄ変換器の出力が前記所定の目
標電圧より大きい時は、前記所定の基準値を前記電圧調
整回路の出力から引いて、前記出力信号の電圧レベルと
する請求項１または２記載の電圧調整装置。4. The control of the voltage adjustment circuit is performed by the A / D
The output of the converter is compared with the predetermined target voltage. If the output of the A / D converter is higher than the predetermined target voltage when the output is higher than a predetermined reference value, the predetermined reference value is adjusted to the voltage. The voltage regulator according to claim 1, wherein the voltage level of the output signal is subtracted from the output of the circuit.
号である請求項１，２，３または４記載の電圧調整装
置。5. The voltage adjustment device according to claim 1, wherein the signal for starting the voltage adjustment is a periodic signal.
ョットパルス信号である請求項１，２，３または４記載
の電圧調整装置。6. The voltage adjustment apparatus according to claim 1, wherein the signal for starting the voltage adjustment is a one-shot pulse signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000227705A JP2002041157A (en) | 2000-07-27 | 2000-07-27 | Voltage controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000227705A JP2002041157A (en) | 2000-07-27 | 2000-07-27 | Voltage controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002041157A true JP2002041157A (en) | 2002-02-08 |
Family
ID=18721115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000227705A Pending JP2002041157A (en) | 2000-07-27 | 2000-07-27 | Voltage controller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002041157A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0823275A (en) * | 1994-07-07 | 1996-01-23 | Mitsubishi Electric Corp | Analog output device |
| JPH0868986A (en) * | 1994-08-30 | 1996-03-12 | Mitsubishi Electric Corp | Back light controller |
| JPH11205058A (en) * | 1998-01-19 | 1999-07-30 | Mitsubishi Electric Corp | Output compensating circuit |
-
2000
- 2000-07-27 JP JP2000227705A patent/JP2002041157A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0823275A (en) * | 1994-07-07 | 1996-01-23 | Mitsubishi Electric Corp | Analog output device |
| JPH0868986A (en) * | 1994-08-30 | 1996-03-12 | Mitsubishi Electric Corp | Back light controller |
| JPH11205058A (en) * | 1998-01-19 | 1999-07-30 | Mitsubishi Electric Corp | Output compensating circuit |
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