WO2013047251A1 - Ac入力電圧遮断検出方法及び回路 - Google Patents
Ac入力電圧遮断検出方法及び回路 Download PDFInfo
- Publication number
- WO2013047251A1 WO2013047251A1 PCT/JP2012/073746 JP2012073746W WO2013047251A1 WO 2013047251 A1 WO2013047251 A1 WO 2013047251A1 JP 2012073746 W JP2012073746 W JP 2012073746W WO 2013047251 A1 WO2013047251 A1 WO 2013047251A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- voltage
- limit voltage
- input voltage
- class
- circuit
- Prior art date
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/12—Measuring rate of change
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/145—Indicating the presence of current or voltage
- G01R19/155—Indicating the presence of voltage
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16528—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values using digital techniques or performing arithmetic operations
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
Definitions
- the present invention relates to an AC input voltage interruption detection method and circuit for detecting that an AC input voltage is interrupted and stopping a power supply or discharging a high-capacity capacitor.
- the AC input voltage cut-off detection circuit detects that the AC input voltage is cut off, and is used to stop the power supply to which the AC input voltage is connected or to discharge a high-voltage capacitor. -This circuit is essential for safe operation of DC converters.
- FIG. 1 and FIG. 2 are diagrams for explaining a conventional first AC input voltage cutoff detection circuit and its operation shown in Patent Document 1 below.
- FIG. 1 when an AC input voltage is connected through a plug connected to an AC power source, the voltage of the filter capacitor C0 follows the AC voltage. However, when the AC input voltage is interrupted for some reason, the AC voltage at that time is held at C0, but thereafter, it is slowly discharged through the resistors (R1 and R2 and R3 or R4). The AC input voltage is monitored by a detection circuit (detailed circuit is shown on the right side of FIG. 1) via the divided voltage Vin of the resistors R1 and R2, and as shown on the right end of FIG. When the state where Vin does not drop below the reference voltage Vref1 continues for a predetermined time longer than the AC cycle, it is determined that AC is cut off.
- the detailed circuit shown in the right part of FIG. 1 includes a first comparator CMP1 having a hysteresis characteristic in which the input voltage Vin is applied to the inverting input terminal, and a gate terminal connected to the output terminal of the comparator CMP1.
- the constant current source I1 charges the capacitor C1 with a constant current while Q1 is off. As a result, the potential V1 of the node N1 gradually rises, and when Q1 is turned on, the charge of the capacitor C1 is discharged and the potential V1 is rapidly lowered to generate a sawtooth signal.
- a second comparator CMP2 having hysteresis characteristics in which the potential V1 is applied to the non-inverting input terminal, an open drain output MOSFET Q2 having a gate terminal connected to the output terminal of the comparator CMP2, and a non-inverting input of the first comparator CMP1 It has a constant current source I2 that generates a reference voltage Vref1 applied to the terminal and a reference voltage Vref2 applied to the inverting input terminal of the second comparator CMP2, a diode D3, voltage dividing resistors R5 and R6, and a drain terminal of Q2 Connected to output terminal OUT.
- the first comparator CMP1 compares the input voltage Vin with the reference voltage Vref1, and when the input voltage Vin becomes higher than Vref1, the output falls to a low level to turn off the MOSFET Q1, and when Vin becomes lower than Vref1, the output becomes high. Operate to rise to level and turn on Q1.
- Q1 When Q1 is turned on, the charge of the capacitor C1 connected to the coupling node N1 between Q1 and I1 is extracted, so that the potential V1 of the node N1 changes to the ground potential.
- the second comparator CMP2 compares the potential V1 of the node N1 with the reference voltage Vref2, and operates so that the output falls to a low level when V1 becomes higher than Vref2.
- the first comparator CMP1 continues to output the pulse by detecting the AC waveform even if the AC voltage slightly decreases.
- the charge is periodically reset, so that the potential V1 of the node N1 does not become higher than Vref2, and the output Vout remains at the high level.
- the first comparator CMP1 does not output a pulse and the charge of the capacitor C1 is not reset. Therefore, V1 becomes higher than Vref2, and the output Vout changes to a low level, so that it is possible to notify the outside of AC power supply cutoff (AC input voltage cutoff).
- FIG. 3 and 4 are diagrams for explaining the conventional second AC input voltage cutoff detection circuit and its operation shown in Patent Document 2 below.
- the ripple component of the detection voltage is extracted by an AC detection unit (high-pass filter) and rectified and smoothed.
- the reference voltage Vr3 is exceeded, it is determined that the AC input voltage is connected.
- the differential amplifier 22 in the circuit of FIG. 3 obtains the difference value between the ground voltage detection signals of the output power supply lines PL1 and PL2 by the output voltage detection unit 11, and the AC detection unit 23 generates the ripple component.
- the output signal level of the rectifying / smoothing unit 24 becomes zero or a value close thereto, and the low-level capacitor short-circuit failure alarm signal is output from the comparison unit 25.
- FIG. 4 is a waveform diagram showing how the capacitor short-circuit fault is detected in FIG. 3.
- the output power supply lines PL1 and PL2 have ripple components of the switching frequency due to the switching elements Q1 to Q4.
- the detection signal from the output voltage detector 11 is a DC voltage including a ripple component, but when the capacitor C3 is short-circuited, it becomes almost 0V.
- the AC detection unit 23 detects a voltage including a ripple component as shown in (B), and when the capacitor C3 is short-circuited, the detection signal becomes 0V.
- the rectified and smoothed output signal of the rectifying and smoothing unit 24 becomes 0 V when the capacitor C3 is short-circuited, as shown in (C) and (D).
- the output signal of the comparison unit 25 that compares the rectified and smoothed output signal with the reference voltage Vr3 is high when the capacitor C3 is normal, as shown in (E), but a short-circuit fault occurs in the capacitor C3.
- the low level becomes 0V. This low level signal is taken out as an alarm signal for occurrence of a capacitor short-circuit fault.
- the above-described first conventional AC input voltage cutoff detection circuit has a capacitance component that exists on the detection circuit side from the diodes D1 and D2 even when the AC input voltage is connected (in addition to parasitic capacitance, measures against surges) If the time constant due to the resistors (R1, R2) that discharge this is large, the input voltage Vin may not drop to the reference voltage Vref1, in which case the AC input There is a problem of misjudging that the voltage is cut off. At this time, when using a fixed AC voltage, it is possible to avoid this problem by selecting the reference voltage Vref1 corresponding to a voltage slightly lower than the peak value of the AC input voltage. When the AC input voltage range is widened with the power supply specification compatible with wide, it is difficult to select the reference voltage Vref1.
- the above-described conventional second AC input voltage cutoff detection circuit does not cause a problem of erroneous determination like the conventional first AC input voltage cutoff detection circuit, but filters low frequency components of about 50 Hz to 60 Hz. Since a large resistance and / or capacitance is required for rectification, there is a problem that the AC input voltage cutoff detection circuit is not suitable for being configured as an integrated circuit.
- JP 2009-165305 A (FIGS. 1 to 3)
- JP 2009-89490 A FIGS. 2 and 4
- the object of the present invention is suitable for a configuration using an integrated circuit, and even if the ripple of the detection voltage is small (the detection voltage does not sufficiently decrease), the AC input voltage is reduced.
- An AC input voltage interruption detection method and circuit capable of determining interruption / connection are provided.
- the AC input voltage cutoff detection method determines which class of three or more classes each having a predetermined upper limit voltage and a lower limit voltage the detection voltage corresponding to the AC input voltage belongs to. It is characterized in that it is determined at a cycle shorter than the cycle of the AC input voltage or at all times, and the AC input voltage is cut off when the class to which the determination belongs does not change within a predetermined time.
- the detected voltage exceeds the upper limit voltage, it is determined that it belongs to the next higher class, and when the detected voltage falls below the lower limit voltage, it is one lower. It is characterized by determining that it belongs to a class.
- the AC input voltage interruption detection method of the present invention it is possible to determine whether the AC input voltage is interrupted or connected even when the ripple of the input AC detection voltage is small (the detection voltage does not sufficiently decrease). It becomes.
- the AC input voltage cutoff detection circuit of the present invention determines to which class of three or more classes each having a predetermined upper limit voltage and a lower limit voltage the detection voltage corresponding to the AC input voltage belongs, and belongs to the determination.
- An upper limit voltage comparison circuit for determining, a lower limit voltage comparison circuit for determining that the detected voltage is smaller than the lower limit voltage, and a count-up operation according to an output result of the upper limit voltage comparison circuit,
- An up / down counter that performs a count-down operation according to an output result, and the upper limit voltage according to a digital value output by the up / down counter.
- a digital-to-analog converter for outputting a serial lower limit voltage, characterized in that it and a timer circuit which is reset by the count-up operation or the count-down operation of the up-down counter.
- the upper limit voltage comparison circuit and the lower limit voltage comparison circuit may be configured as one comparator by alternately using a comparator in a time division manner. desirable.
- the circuit elements constituting the AC input voltage cutoff detection circuit can be realized by an element that can be easily integrated, it can be easily realized by an integrated circuit.
- FIG. 5 is a diagram showing a configuration of an AC input voltage cutoff detection circuit according to the embodiment of the present invention.
- the AC input voltage cutoff detection circuit shown in FIG. 5 selects either the class upper limit voltage Vuref (151) or the class lower limit voltage Vdref (152) as the reference voltage of the comparator 110 and outputs it as the selection circuit output (131).
- the control logic 120 that controls the selection circuit 130 and generates the count-up signal 121 or the count-down signal 122 according to the output of the comparator 110, and the count-up signal 121 from the control logic 120
- Up / down counter 140 that counts up and receives countdown signal 122 to count down, and digital analog that outputs class upper limit voltage Vuref (151) and class lower limit voltage Vdref (152) according to the digital value output by up / down counter 140
- the converter 150 and the timer circuit 160 that is reset by the count up signal 121 from the control logic 120 to the up / down counter 140. Constructed.
- 5 shows an example in which the timer circuit 160 is reset by the count-up signal 121 from the control logic 120.
- the present invention is not limited to this, and the timer circuit 160 is reset by the count-down signal 122 from the control logic 120. There may be. Alternatively, the count up signal 121 and the count down signal 122 may be reset with a logical sum. 5 does not specifically describe the detection method of the detection signal Vin, but the detection signal Vin is a voltage obtained by dividing the AC input voltage by full-wave rectification or half-wave rectification. In the same way as the circuit shown in Fig.
- the timer circuit 160 determines that the AC input voltage is cut off when the time measurement is completed without being reset.
- the control logic 120 repeats the following operations (1) to (4) with a period sufficiently short with respect to the period of the AC input voltage (provided that there is no problem with the response speed of the comparator 110).
- Vuref (151) is selected by the control signal 123 as the reference voltage of the comparator 110 and applied to the inverting input terminal of the comparator 110.
- Vdref (152) is selected by the control signal 123 as the reference voltage of the comparator 110 and applied to the inverting input terminal of the comparator 110.
- FIG. 6 is a diagram showing operation waveforms of the AC input voltage cutoff detection circuit shown in FIG.
- the broken line parallel to the horizontal axis (time axis) of FIG. 6 is a scale line of the graph.
- FIG. 6 shows how the class upper limit voltage Vuref (151) and the class lower limit voltage Vdref (152) change (middle stage in the illustrated example) with respect to the detection signal Vin (100) illustrated in the upper stage in the illustrated example.
- Vuref (151) and Vdref (152) The value of rises stepwise.
- the detection signal Vin (100) shows a change with a certain level in a predetermined cycle, so that the count up signal 121 and the count down signal 122 are output from the control logic 120.
- the reset signal 121 is shown in the lower part of FIG. 6, the timer circuit 160 is configured to be reset by the count-up signal 121 (or the count-down signal 122), so that while the AC input voltage is connected, There is no timeout.
- the detection signal Vin (100) only decreases gently, and the timer circuit 160 does not generate the count up signal 121 and the count down signal 122 from the control logic 120.
- the timer circuit 160 times out and the AC cutoff detection signal 161 is output from the timer circuit 160.
- the upper limit voltage Vuref (151) and the lower limit voltage Vdref (152) each have three classes (digital values), and the upper limit voltage corresponding to a certain class (digital value).
- the value of Vuref (151) is set to a value slightly higher than the value of the lower limit voltage Vdref (152) corresponding to the upper class (digital value). That is, a difference (hysteresis width) is generated between the level at which the count-up signal 121 is generated when the detection signal Vin (100) is increased and the level at which the count-down signal 122 is generated when the detection signal Vin (100) is decreased. This is to prevent the count value from fluctuating in the vicinity of class switching.
- the upper limit voltage comparison circuit and the lower limit voltage comparison circuit are described using the control logic 120 and the selection circuit 130, a configuration example in which one comparator 110 is used in a time division manner is described. It is also possible to configure the lower limit voltage comparison circuit with different comparators. In this case, it is always determined (not discretely as described above) to which class of three or more classes each having a predetermined upper limit voltage and lower limit voltage the detection voltage corresponding to the AC input voltage belongs. However, it is desirable to increase the hysteresis width in consideration of the influence of offset variation of each comparator.
- the AC input voltage cutoff detection method and circuit according to the present invention can be applied not only to Japan, which has a narrow power supply specification in the AC input voltage range, but also to a power supply specification compatible with a wider world.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
Description
(1)比較器110の基準電圧として制御信号123によりVuref(151)を選択して比較器110の反転入力端子に加える。
(2)上限電圧比較:比較器110の出力結果がVin(100)>Vuref(151)を示していれば、カウントアップ信号121を出力する(アップダウンカウンタ140の出力結果によりVuref, Vdrefが変化する)。
(3)比較器110の基準電圧として制御信号123によりVdref(152)を選択して比較器110の反転入力端子に加える。
(4)下限電圧比較:比較器110の出力結果がVin(100)<Vdref(152)を示していれば、カウントダウン信号122を出力する(アップダウンカウンタ140の出力結果によりVuref, Vdrefが変化する)。
Claims (6)
- AC入力電圧に対応する検出電圧が所定の上限電圧と下限電圧をそれぞれ有する3以上の階級のどの階級に属するかを前記AC入力電圧の周期より短い周期で、もしくは常時判定し、該判定により属するとされた階級が所定時間内に変化しない場合には前記AC入力電圧が遮断されたと判定することを特徴とするAC入力電圧遮断検出方法。
- 前記検出電圧が前記上限電圧を上回ると1つ上の階級に属すると判定し、前記検出電圧が前記下限電圧を下回ると1つ下の階級に属すると判定することを特徴とする請求項1に記載のAC入力電圧遮断検出方法。
- ある階級に対応する前記上限電圧は、その1つ上の階級の前記下限電圧よりも高いことを特徴とする請求項1または2に記載のAC入力電圧遮断検出方法。
- AC入力電圧に対応する検出電圧が所定の上限電圧と下限電圧をそれぞれ有する3以上の階級のどの階級に属するかを判定し、該判定により属するとされた階級が所定時間内に変化しない場合には前記AC入力電圧が遮断されたと判定するAC入力電圧遮断検出方法を実現するための回路であって、前記検出電圧が前記上限電圧より大きいことを判定する上限電圧比較回路と、前記検出電圧が前記下限電圧より小さいことを判定する下限電圧比較回路と、前記上限電圧比較回路の出力結果に応じてカウントアップ動作を行い、前記下限電圧比較回路の出力結果に応じてカウントダウン動作を行うアップダウンカウンタと、前記アップダウンカウンタの出力するデジタル値に応じて前記上限電圧と前記下限電圧を出力するデジタルアナログ変換器と、前記アップダウンカウンタの前記カウントアップ動作または前記カウントダウン動作によってリセットされるタイマ回路と、を備えていることを特徴とするAC入力電圧遮断検出回路。
- 前記上限電圧比較回路と前記下限電圧比較回路を、1つの比較器を時分割で交互に使用して構成したことを特徴とする請求項4に記載のAC入力電圧遮断検出回路。
- ある階級に対応する前記上限電圧は、その1つ上の階級の前記下限電圧よりも高いことを特徴とする請求項4または5に記載のAC入力電圧遮断検出回路。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020147007106A KR101638000B1 (ko) | 2011-09-28 | 2012-09-14 | Ac 입력 전압 차단 검출 회로 및 방법 |
JP2013536179A JP5842229B2 (ja) | 2011-09-28 | 2012-09-14 | Ac入力電圧遮断検出回路及び方法 |
US14/345,399 US9778291B2 (en) | 2011-09-28 | 2012-09-14 | AC input voltage interruption detection method and circuit |
CN201280045261.4A CN103917878B (zh) | 2011-09-28 | 2012-09-14 | Ac输入电压切断检测电路及方法 |
EP12835190.5A EP2762903B1 (en) | 2011-09-28 | 2012-09-14 | Ac input voltage interruption detection method and circuit |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011213273 | 2011-09-28 | ||
JP2011-213273 | 2011-09-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013047251A1 true WO2013047251A1 (ja) | 2013-04-04 |
Family
ID=47995284
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2012/073746 WO2013047251A1 (ja) | 2011-09-28 | 2012-09-14 | Ac入力電圧遮断検出方法及び回路 |
Country Status (6)
Country | Link |
---|---|
US (1) | US9778291B2 (ja) |
EP (1) | EP2762903B1 (ja) |
JP (1) | JP5842229B2 (ja) |
KR (1) | KR101638000B1 (ja) |
CN (1) | CN103917878B (ja) |
WO (1) | WO2013047251A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019047621A (ja) * | 2017-09-01 | 2019-03-22 | ミツミ電機株式会社 | 電源制御用半導体装置および電源装置並びにxコンデンサの放電方法 |
US10938315B2 (en) | 2017-03-16 | 2021-03-02 | Fuji Electric Co., Ltd. | Control circuit for AC/DC converter |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104422806B (zh) * | 2013-08-21 | 2018-08-07 | 鸿富锦精密工业(深圳)有限公司 | 电源侦测电路 |
US10345348B2 (en) | 2014-11-04 | 2019-07-09 | Stmicroelectronics S.R.L. | Detection circuit for an active discharge circuit of an X-capacitor, related active discharge circuit, integrated circuit and method |
CN105720807B (zh) * | 2014-12-03 | 2018-05-29 | 万国半导体(开曼)股份有限公司 | 用于检测输入电压和泄放滞留电压的方法及装置 |
US11018573B2 (en) | 2017-12-12 | 2021-05-25 | Johnson Controls Fire Protection LP | Power supply ripple detector |
CN114930699A (zh) * | 2020-01-23 | 2022-08-19 | 艾锐势有限责任公司 | 用于改进由ac电源供应给装置的电力的中断的检测的系统和方法 |
US20240039563A1 (en) * | 2022-07-26 | 2024-02-01 | Bae Systems Information And Electronic Systems Integration Inc. | Method for rapid baseline recovery for irregular frequency content large dynamic range unipolar data signals |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6067864A (ja) * | 1983-09-22 | 1985-04-18 | Toshiba Corp | 交流電圧検出回路 |
JPS63315963A (ja) * | 1987-06-19 | 1988-12-23 | Omron Tateisi Electronics Co | 停電検出回路 |
JPS6473259A (en) * | 1987-09-14 | 1989-03-17 | Nec Corp | Instantaneous interruption detection for ac power supply |
Family Cites Families (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3725795A (en) * | 1971-12-22 | 1973-04-03 | Lorain Prod Corp | A-c voltage detector |
JPS5097369A (ja) * | 1973-12-25 | 1975-08-02 | ||
US4031463A (en) * | 1976-03-01 | 1977-06-21 | Control Data Corporation | Power brown-out detector |
US4788619A (en) * | 1987-04-24 | 1988-11-29 | Basler Electric Company | Protective relays and methods |
US4814934A (en) * | 1987-12-24 | 1989-03-21 | Sundstrand Corp. | Voltage fault detector |
JPH03239159A (ja) * | 1990-02-15 | 1991-10-24 | Mitsubishi Electric Corp | 直流電源装置 |
JPH05307422A (ja) * | 1992-04-30 | 1993-11-19 | Mitsubishi Electric Corp | クロック切り換え回路 |
JPH0667864A (ja) * | 1992-08-19 | 1994-03-11 | Fujitsu Ltd | マニュアル類の自動作成,更新方法 |
JPH10108451A (ja) | 1996-09-26 | 1998-04-24 | Sony Corp | スイッチング電源の入力交流電圧検出方法及び装置 |
DE19814696C1 (de) * | 1998-04-01 | 1999-07-08 | Siemens Ag | Spannungs-Überwachungseinrichtung für zwei unterschiedliche Versorgungsspannungen eines elektronischen Geräts |
US6473280B1 (en) * | 2000-10-12 | 2002-10-29 | Analog Devices, Inc. | Switching voltage regulator failure detection circuit and method |
JP4133166B2 (ja) * | 2002-09-25 | 2008-08-13 | 株式会社ルネサステクノロジ | 不揮発性半導体記憶装置 |
US7630695B2 (en) * | 2007-04-12 | 2009-12-08 | Applied Micro Circuits Corporation | Receiver signal strength indicator |
JP4890405B2 (ja) | 2007-09-28 | 2012-03-07 | 富士通テレコムネットワークス株式会社 | 電源異常検出回路 |
US7698077B2 (en) * | 2007-11-09 | 2010-04-13 | Applied Micro Circuits Corporation | System and method for signal level detection |
JP5176551B2 (ja) | 2008-01-09 | 2013-04-03 | ミツミ電機株式会社 | Ac検出回路および直流電源装置 |
JP2009268184A (ja) * | 2008-04-23 | 2009-11-12 | Mitsumi Electric Co Ltd | Ac検出回路および直流電源装置 |
JP5422922B2 (ja) * | 2008-05-29 | 2014-02-19 | 富士電機株式会社 | 同期整流型dc−dcコンバータの逆流防止回路 |
JP2010261862A (ja) * | 2009-05-08 | 2010-11-18 | Sony Corp | Acライン信号検出装置およびその方法、並びに電源装置 |
CN101881793B (zh) * | 2009-05-08 | 2013-05-01 | 深圳市金威源科技股份有限公司 | 一种交流电掉电检测方法及报警电路 |
CN201440150U (zh) * | 2009-08-04 | 2010-04-21 | 深圳和而泰智能控制股份有限公司 | 一种用于生产线的电压检测装置 |
US9281824B2 (en) * | 2013-03-15 | 2016-03-08 | Intel Corporation | Clock amplitude detection |
-
2012
- 2012-09-14 CN CN201280045261.4A patent/CN103917878B/zh active Active
- 2012-09-14 WO PCT/JP2012/073746 patent/WO2013047251A1/ja active Application Filing
- 2012-09-14 US US14/345,399 patent/US9778291B2/en active Active
- 2012-09-14 KR KR1020147007106A patent/KR101638000B1/ko active IP Right Grant
- 2012-09-14 EP EP12835190.5A patent/EP2762903B1/en active Active
- 2012-09-14 JP JP2013536179A patent/JP5842229B2/ja active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6067864A (ja) * | 1983-09-22 | 1985-04-18 | Toshiba Corp | 交流電圧検出回路 |
JPS63315963A (ja) * | 1987-06-19 | 1988-12-23 | Omron Tateisi Electronics Co | 停電検出回路 |
JPS6473259A (en) * | 1987-09-14 | 1989-03-17 | Nec Corp | Instantaneous interruption detection for ac power supply |
Non-Patent Citations (1)
Title |
---|
See also references of EP2762903A4 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10938315B2 (en) | 2017-03-16 | 2021-03-02 | Fuji Electric Co., Ltd. | Control circuit for AC/DC converter |
JP2019047621A (ja) * | 2017-09-01 | 2019-03-22 | ミツミ電機株式会社 | 電源制御用半導体装置および電源装置並びにxコンデンサの放電方法 |
Also Published As
Publication number | Publication date |
---|---|
US9778291B2 (en) | 2017-10-03 |
EP2762903A4 (en) | 2015-06-03 |
EP2762903A1 (en) | 2014-08-06 |
US20140347034A1 (en) | 2014-11-27 |
KR101638000B1 (ko) | 2016-07-11 |
CN103917878A (zh) | 2014-07-09 |
CN103917878B (zh) | 2016-05-25 |
EP2762903B1 (en) | 2023-06-14 |
JPWO2013047251A1 (ja) | 2015-03-26 |
KR20140068071A (ko) | 2014-06-05 |
JP5842229B2 (ja) | 2016-01-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5842229B2 (ja) | Ac入力電圧遮断検出回路及び方法 | |
US8174802B2 (en) | Switching regulator and operations control method thereof | |
US9584017B1 (en) | Input and output overvoltage protection in a power converter | |
US10063159B1 (en) | Adaptive synchronous rectifier sensing deglitch | |
JP4848786B2 (ja) | スイッチング電源装置 | |
US9455622B2 (en) | Inverter and over current protection method thereof | |
TWI470906B (zh) | 適用於一次側控制之定電流控制單元以及相關之控制方法 | |
US9130449B2 (en) | Alternating-current conversion system having low power consumption bleeder circuit | |
TWI519049B (zh) | 過電流保護電路及具有其之脈寬調變器 | |
WO2013153596A1 (ja) | 地絡検出回路およびそれを用いた電力変換装置 | |
CN110707925A (zh) | 过零检测电路、过零检测方法和开关电源电路 | |
JP6530493B2 (ja) | サージ保護装置の使用量をモニタすることが可能なドライバ回路 | |
US11293992B2 (en) | Fault detection in hybrid DC-DC power convertors | |
TWI543505B (zh) | Application of the input voltage detection circuit with parameter setting function in the power converter and its parameter setting and circuit protection method | |
JP6880865B2 (ja) | Ac/dcコンバータの制御回路 | |
US9641087B2 (en) | Method and device for detecting conduction mode | |
TWI542102B (zh) | 電源轉換裝置及其過功率保護方法 | |
CN108141146B (zh) | 电力转换器 | |
US8929044B2 (en) | System and method for controlled overvoltage detection | |
KR101434435B1 (ko) | 인버터 dc 링크 전압 제어 시스템 및 그 방법 | |
TW201705638A (zh) | 消除突波電路與消除突波方法與短路保護裝置 | |
JP2019009947A (ja) | スイッチング電源装置 | |
JP2011151936A (ja) | 電力変換回路 | |
JP2004220861A (ja) | 漏電検出装置 | |
JP2012070567A (ja) | 電流検出回路 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 12835190 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2013536179 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2012835190 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 20147007106 Country of ref document: KR Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 14345399 Country of ref document: US |