【特許請求の範囲】
【請求項１】
第１および第２の端子を有する昇圧用容量と、それらと接続して作用する第１、第２、第３および第４の導電手段とからなる昇圧回路の制御方法であって、
充電期間中に、前記第１の導電手段を介して前記昇圧用容量の第１の端子を電源端子に接続し、前記第２の導電手段を介して前記昇圧用容量の第２の端子を基準電位に接続するステップ、
充電期間の後の電荷転送期間中に、前記第３導電手段を介して前記昇圧用容量の第２の端子を前記電源端子に接続し、前記第４導電手段を介して前記昇圧用容量の第１の端子を出力端子に接続するステップであって、前記充電期間と前記電荷転送期間がともに昇圧サイクルを形成することを特徴とするステップ、および
前記電源端子に印加される電源電圧の大きさに応じて、前記充電期間を調整するステップを含むことを特徴とする制御方法。
【請求項２】
請求項１記載の昇圧回路の制御方法において、
前記充電期間は、前記電源電圧の設定電圧からの変化に応じて調整し、前記電源電圧の大きさが前記設定値を超えた時は、前記充電期間は０となるようにし、前記電源電圧の大きさが前記設定値以下の時は、前記電源電圧の電圧降下量が増えることに応じて、前記充電期間を長くするようにしたことを特徴とする制御方法。
【請求項３】
請求項１記載の昇圧回路の制御方法において、
前記昇圧サイクルは、さらに、前記充電期間の前に放電期間を含み、前記放電期間中に、前記昇圧用容量の両端子に対して同電位の電圧を印加することにより、前記昇圧用容量の荷電の放電を可能にすることを特徴とする制御方法。
【請求項４】
請求項２記載の昇圧回路の制御方法において、
前記昇圧サイクルは、さらに、前記充電期間の前に放電期間を含み、前記放電期間中に、前記昇圧用容量の両端子に対して同電位の電圧を印加することにより、前記昇圧用容量の荷電の放電を可能にすること特徴とする制御方法。
【請求項５】
第１および第２の端子を有する昇圧用容量と、パルス回路と、それらと接続して作用する第１、第２、第３および第４の導電手段とからなる昇圧回路の制御方法であって、
充電期間中に、前記第１の導電手段を介して前記昇圧用容量の第１の端子を電源端子に接続し、前記第２の導電手段を介して前記昇圧用容量の第２の端子を基準電位に接続するステップ、および
充電期間の後の電荷転送期間中に、前記第３導電手段を介して前記昇圧用容量の第２の端子を前記電源端子に接続し、前記第４導電手段を介して前記昇圧用容量の第１の端子を出力端子に接続するステップであって、前記充電期間と前記電荷転送期間がともに昇圧サイクルを形成することを特徴とするステップを含み、
前記充電期間は、前記パルス発生回路からの出力信号のパルス幅によって定義され、前記パルス幅は、前記電源端子に印加される電源電圧の大きさに依存したものとなっていることを特徴とする制御方法。
【請求項６】
請求項５記載の昇圧回路の制御方法において、
前記昇圧サイクルは、さらに、前記充電期間の前に放電期間を含み、前記放電期間中に、前記昇圧用容量の両端子に対して同電位の電圧を印加することにより、前記昇圧用容量の荷電の放電を可能にすることを特徴とする制御方法。
【請求項７】
第１および第２の端子を有する昇圧用容量と、それらと接続して作用する第１、第２、第３および第４の導電手段とからなる昇圧回路の制御方法であって、
充電期間中に、前記第１の導電手段を介して前記昇圧用容量の第１の端子を電源端子に接続し、前記第２の導電手段を介して前記昇圧用容量の第２の端子を基準電位に接続するステップ、および
充電期間の後の電荷転送期間中に、前記第３導電手段を介して前記昇圧用容量の第２の端子を前記電源端子に接続し、前記第４導電手段を介して前記昇圧用容量の第１の端子を出力端子に接続するステップであって、前記充電期間と前記電荷転送期間がともに昇圧サイクルを形成することを特徴とするステップを含み、
前記充電期間中に前記昇圧用容量に蓄積する電荷量は、前記電源端子に印加される電圧の大きさに応じて調整されることを特徴とする制御方法。
【請求項８】
請求項７記載の昇圧回路の制御方法において、
前記昇圧サイクルは、さらに、前記充電期間の前に放電期間を含み、前記放電期間中に、前記昇圧用容量の両端子に対して同電位の電圧を印加することにより、前記昇圧用容量の電荷の放電を可能にすることを特徴とする制御方法。
【請求項９】
第１および第２の端子を有する昇圧用容量と、パルス回路と、それらと接続して作用する第１、第２、第３および第４の導電手段とからなる昇圧回路の制御方法であって、
充電期間中に、前記第１の導電手段を介して前記昇圧用容量の第１の端子を電源端子に接続し、前記第２の導電手段を介して前記昇圧用容量の第２の端子を基準電位に接続するステップ、
前記第３導電手段を介して前記昇圧用容量の第２の端子を前記電源端子に接続し、前記第４導電手段を介して前記昇圧用容量の第１の端子を出力端子に接続するステップであって、前記充電期間と前記電荷転送期間がともに昇圧サイクルを形成することを特徴とするステップ、および
前記出力端子の電圧を、前記電源端子の電圧と比較し、比較結果を得るステップを含み、
前記充電期間は、前記パルス発生回路により制御され、前記パルス発生回路は、前記電源端子の電圧の大きさに依存したパルス幅を有する出力信号を、少なくとも前記第１の導電手段に与えることを特徴とする制御方法。
【請求項１０】
第１および第２の端子を有する昇圧用容量と、パルス回路と、それらと接続して作用する第１、第２、第３および第４の導電手段とからなる昇圧回路の制御方法であって、
充電期間中に、前記第１の導電手段を介して前記昇圧用容量の第１の端子を電源端子に接続し、前記第２の導電手段を介して前記昇圧用容量の第２の端子を基準電位に接続するステップ、および
前記充電期間の後の電荷転送期間中に、前記第３導電手段を介して前記昇圧用容量の第２の端子を前記電源端子に接続し、前記第４導電手段を介して前記昇圧用容量の第１の端子を出力端子に接続するステップであって、前記充電期間と前記電荷転送期間がともに昇圧サイクルを形成することを特徴とするステップを含み、
前記充電期間中に、前記昇圧用容量に供給すべき電流の大きさは、前記電源端子に印加される電圧の大きさに応じて調整されることを特徴とする制御方法。
【請求項１１】
昇圧用容量を有する昇圧回路の制御方法であって、
充電期間と荷電転送期間を含む昇圧サイクル内の充電期間中に、第１の導電手段を介して前記昇圧用容量の一方の端子に電源電圧を印加しながら、その他方の端子に基準電位を印加するステップ、
電源電圧の大きさに応じて、前記充電期間内のある時間帯のみ、前記昇圧用容量の前記一方の端子への前記電源電圧の印加を停止し、同時に、第２の導電手段を介して前記昇圧用容量の前記一方の端子を基準電位に接続し、前記昇圧用容量の前記電源電圧の前記大きさに応じて決定される、前記充電期間内の前記時間帯に依存した電荷量のみを放電するステップ、および
その後の荷電転送期間中に、第３導電手段を介して前記電源電圧を前記他方の端子に印加し、前記昇圧用容量に蓄積された電荷を、前記一方の端子から出力端子に対して転送するステップを含むことを特徴とする制御方法。
【請求項１２】
請求項１１記載の昇圧回路の制御方法において、前記電源電圧の値が設定値よりも大きくなった際に、前記充電期間を短くすることを特徴とする制御方法。
【請求項１３】
第１の端子と第２の端子を有する昇圧用容量と、充電期間と放電期間および荷電転送期間を含む昇圧サイクルのうち前記充電期間を規定する充電指令信号を出力する充電指令信号出力手段と、前記昇圧容量から放電される電荷量を調整する放電期間を規定する放電指令信号を出力する放電指令信号出力手段と、前記昇圧用容量の第１の端子と電源端子とを電気的に接続する第１の導電手段と、前記昇圧用容量の第２の端子と基準電位とを電気的に接続する第２の導電手段と、前記昇圧用容量の第１の端子と基準電位とを電気的に接続する第３の導電手段と、前記昇圧用容量の第２の端子と電源端子とを電気的に接続する第４の導電手段と、前記昇圧用容量の第１の端子と出力端子とを電気的に接続する第５の導電手段とを含む昇圧回路の制御方法であって、該方法は、
前記充電期間中は、前記第１および第２の導電手段を導通状態におき、前記充電期間の後に続く前期放電期間中は、第１の導電手段を非導通状態におくとともに第３の導電手段を導通状態におき、前記放電期間の経過後は、第２および第３の導電手段を非導通状態におくとともに第４および第５の導電手段を導通状態として、前記電荷転送期間中は、前記昇圧用容量の電荷を前記出力端子に転送するステップ、および
前記放電指令信号出力手段により、電源電圧の大きさに応じて、前記放電指令信号が発生する期間を調整するステップを含むことを特徴とする制御方法。
【請求項１４】
請求項１３記載の昇圧回路の制御方法において、前記電源電圧が増加した際には、前記放電指令信号の発生期間が長くなるように、前記放電指令信号出力手段が調整することを特徴とする制御方法。
【請求項１５】
第１の端子と第２の端子との間に接続された昇圧用容量と、
充電期間と放電期間および荷電転送期間を含む昇圧サイクルのうち前記充電期間を規定する充電指令信号を出力する充電指令信号出力手段と、
前期放電期間の開始に対応した制御信号を出力し、電源電圧の大きさによって決定された時間の経過後に、前記制御信号の出力を停止する制御信号出力手段と、
前記制御信号に応じて、前記昇圧容量の前記第１の端子に電源電圧を印加する第１のスイッチ回路と、
前記充電指令信号が入力する前に、前記昇圧用容量の前記第２の端子に電源電圧を印加し、前記充電期間の開始に対応した充電指令信号の入力に応じて、前記昇圧用容量の前記第２の端子に基準電位を印加する第２のスイッチ回路と、
制御信号の出力が停止している期間中に前記昇圧用容量の第１の端子と第１の出力端子とを電気的に接続する電荷転送チャネルを形成し、前記制御信号出力手段から制御信号が出力されている期間中にそれらの間の電荷転送チャネルを中断する電荷転送回路を備えている昇圧回路装置であって、
前記充電指令信号出力手段は、前記電源電圧の前記大きさに応じて、前記充電指令信号を出力する期間を調整することを特徴とする昇圧回路装置。
【請求項１６】
請求項１５記載の昇圧回路装置は、さらに、電圧降下手段を介して前記第１の出力端子に接続された第２の出力端子を備えていることを特徴とする昇圧回路装置。
[Claims]
[Claim 1]
It is a control method of a boosting circuit including a boosting capacitance having first and second terminals and first, second, third and fourth conductive means that operate in connection with them.
During the charging period, the first terminal of the boosting capacity is connected to the power supply terminal via the first conductive means, and the second terminal of the boosting capacity is referred to via the second conductive means. Steps to connect to the potential,
During the charge transfer period after the charging period, the second terminal of the boosting capacitance is connected to the power supply terminal via the third conductive means, and the boosting capacitance is connected via the fourth conductive means. A step of connecting the terminal 1 to the output terminal, wherein the charging period and the charge transfer period both form a step-up cycle, and
A control method comprising a step of adjusting the charging period according to the magnitude of a power supply voltage applied to the power supply terminal .
2.
In the method for controlling a booster circuit according to claim 1,
The charging period is adjusted according to a change from the set voltage of the power supply voltage, and when the magnitude of the power supply voltage exceeds the set value, the charging period is set to 0, and the power supply voltage is set to 0. A control method characterized in that when the magnitude is equal to or less than the set value, the charging period is lengthened as the amount of voltage drop of the power supply voltage increases.
3.
In the method for controlling a booster circuit according to claim 1,
The boost cycle further includes a discharge period before the charge period, and during the discharge period, the boost capacitance is charged by applying a voltage of the same potential to both terminals of the boost capacitance. A control method characterized by enabling the discharge of.
4.
In the method for controlling a booster circuit according to claim 2,
The boost cycle further includes a discharge period before the charge period, and during the discharge period, the boost capacitance is charged by applying a voltage of the same potential to both terminals of the boost capacitance. A control method characterized by enabling the discharge of.
5.
A method for controlling a booster circuit including a booster capacitance having first and second terminals, a pulse circuit, and first, second, third, and fourth conductive means that operate in connection with the pulse circuit. ,
During the charging period, the first terminal of the boosting capacity is connected to the power supply terminal via the first conductive means, and the second terminal of the boosting capacity is referred to via the second conductive means. Steps to connect to the potential, and
During the charge transfer period after the charging period, the second terminal of the boosting capacitance is connected to the power supply terminal via the third conductive means, and the boosting capacitance is connected via the fourth conductive means. The step of connecting the terminal 1 to the output terminal includes a step characterized in that both the charging period and the charge transfer period form a step-up cycle.
The charging period is defined by the pulse width of the output signal from the pulse generation circuit, and the pulse width depends on the magnitude of the power supply voltage applied to the power supply terminal. Control method.
6.
In the method for controlling a booster circuit according to claim 5,
The boost cycle further includes a discharge period before the charge period, and during the discharge period, the boost capacitance is charged by applying a voltage of the same potential to both terminals of the boost capacitance. A control method characterized by enabling the discharge of.
7.
It is a control method of a boosting circuit including a boosting capacitance having first and second terminals and first, second, third and fourth conductive means that operate in connection with them.
During the charging period, the first terminal of the boosting capacity is connected to the power supply terminal via the first conductive means, and the second terminal of the boosting capacity is referred to via the second conductive means. Steps to connect to the potential, and
During the charge transfer period after the charging period, the second terminal of the boosting capacitance is connected to the power supply terminal via the third conductive means, and the boosting capacitance is connected via the fourth conductive means. The step of connecting the terminal 1 to the output terminal includes a step characterized in that both the charging period and the charge transfer period form a step-up cycle.
A control method characterized in that the amount of electric charge accumulated in the boosting capacity during the charging period is adjusted according to the magnitude of the voltage applied to the power supply terminal.
8.
In the method for controlling a booster circuit according to claim 7,
The boost cycle further includes a discharge period before the charge period, and during the discharge period, the charge of the boost capacitance is charged by applying a voltage of the same potential to both terminals of the boost capacitance. A control method characterized by enabling the discharge of.
9.
A method for controlling a booster circuit including a booster capacitance having first and second terminals, a pulse circuit, and first, second, third, and fourth conductive means that operate in connection with the pulse circuit. ,
During the charging period, the first terminal of the boosting capacity is connected to the power supply terminal via the first conductive means, and the second terminal of the boosting capacity is referred to via the second conductive means. Steps to connect to the potential,
In the step of connecting the second terminal of the boosting capacity to the power supply terminal via the third conductive means and connecting the first terminal of the boosting capacity to the output terminal via the fourth conductive means. A step characterized in that both the charging period and the charge transfer period form a step-up cycle, and
Including the step of comparing the voltage of the output terminal with the voltage of the power supply terminal and obtaining the comparison result.
The charging period is controlled by the pulse generation circuit, and the pulse generation circuit is characterized in that an output signal having a pulse width depending on the magnitude of the voltage of the power supply terminal is given to at least the first conductive means. Control method.
10.
A method for controlling a booster circuit including a booster capacitance having first and second terminals, a pulse circuit, and first, second, third, and fourth conductive means that operate in connection with the pulse circuit. ,
During the charging period, the first terminal of the boosting capacity is connected to the power supply terminal via the first conductive means, and the second terminal of the boosting capacity is referred to via the second conductive means. Steps to connect to the potential, and
During the charge transfer period after the charging period, the second terminal of the boosting capacitance is connected to the power supply terminal via the third conductive means, and the boosting capacitance of the boosting capacitance is connected via the fourth conductive means. A step of connecting the first terminal to the output terminal, which comprises a step in which both the charging period and the charge transfer period form a step-up cycle.
A control method characterized in that the magnitude of the current to be supplied to the boosting capacity during the charging period is adjusted according to the magnitude of the voltage applied to the power supply terminal.
11.
It is a control method of a booster circuit having a boosting capacity.
During the charging period in the boosting cycle including the charging period and the charge transfer period, the power supply voltage is applied to one terminal of the boosting capacitance via the first conductive means, and the reference potential is applied to the other terminal. Steps to do,
Depending on the magnitude of the power supply voltage, the application of the power supply voltage to the one terminal of the boosting capacity is stopped only during a certain period of time within the charging period, and at the same time, the application of the power supply voltage is stopped via the second conductive means. The one terminal of the boosting capacitance is connected to a reference potential, and only the amount of charge depending on the time zone within the charging period, which is determined according to the magnitude of the power supply voltage of the boosting capacitance, is discharged. Steps to do, and
During the subsequent charge transfer period, the power supply voltage is applied to the other terminal via the third conductive means, and the charge accumulated in the boosting capacitance is transferred from the one terminal to the output terminal. A control method characterized by including steps.
12.
The control method according to claim 11, wherein the charging period is shortened when the value of the power supply voltage becomes larger than the set value.
13.
A boosting capacity having a first terminal and a second terminal, a charging command signal output means for outputting a charging command signal that defines the charging period among the boosting cycles including a charging period, a discharging period, and a charge transfer period, and a charging command signal output means. A second unit that electrically connects a discharge command signal output means that outputs a discharge command signal that defines a discharge period for adjusting the amount of electric charge discharged from the boost capacity, and a first terminal and a power supply terminal of the boost capacity. The conductive means 1 and the second conductive means for electrically connecting the second terminal of the boosting capacity and the reference potential, and the first terminal of the boosting capacity and the reference potential are electrically connected. The third conductive means for electrically connecting the second terminal of the boosting capacity and the power supply terminal, and the first terminal and the output terminal of the boosting capacity are electrically connected. A method of controlling a booster circuit including a fifth conductive means connected to the above method.
During the charging period, the first and second conductive means are kept in a conductive state, and during the early discharge period following the charging period, the first conductive means is kept in a non-conductive state and the third conductive means is kept in a non-conductive state. After the discharge period elapses, the second and third conductive means are kept in a non-conducting state, and the fourth and fifth conductive means are put in a conductive state. The step of transferring the charge of the boost capacitance to the output terminal, and
A control method comprising the step of adjusting the period in which the discharge command signal is generated according to the magnitude of the power supply voltage by the discharge command signal output means.
14.
The control method according to claim 13, wherein when the power supply voltage increases, the discharge command signal output means adjusts so that the discharge command signal generation period becomes longer. Method.
15.
The boosting capacitance connected between the first terminal and the second terminal,
A charging command signal output means that outputs a charging command signal that defines the charging period among the step-up cycles including the charging period, the discharging period, and the charge transfer period.
A control signal output means that outputs a control signal corresponding to the start of the early discharge period and stops the output of the control signal after a lapse of time determined by the magnitude of the power supply voltage.
A first switch circuit that applies a power supply voltage to the first terminal of the boosted capacitance in response to the control signal.
Before the charging command signal is input, a power supply voltage is applied to the second terminal of the boosting capacity, and in response to the input of the charging command signal corresponding to the start of the charging period, the boosting capacity is described. A second switch circuit that applies a reference voltage to the second terminal,
During the period when the output of the control signal is stopped, a charge transfer channel for electrically connecting the first terminal and the first output terminal of the boosting capacitance is formed, and the control signal is output from the control signal output means. A booster circuit device with a charge transfer circuit that interrupts the charge transfer channels between them during the output period.
The charging command signal output means is a booster circuit device that adjusts a period for outputting the charging command signal according to the magnitude of the power supply voltage.
16.
The booster circuit device according to claim 15, further comprising a second output terminal connected to the first output terminal via a voltage drop means.