CN111817535A - Standby zero-power-consumption switching power supply and electric equipment - Google Patents

Standby zero-power-consumption switching power supply and electric equipment Download PDF

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CN111817535A
CN111817535A CN202010953063.4A CN202010953063A CN111817535A CN 111817535 A CN111817535 A CN 111817535A CN 202010953063 A CN202010953063 A CN 202010953063A CN 111817535 A CN111817535 A CN 111817535A
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power supply
capacitor
switching
switching tube
voltage
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CN111817535B (en
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刘治发
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Nanjing Meisma Microelectronics Technology Co ltd
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Nanjing Meisma Microelectronics Technology Co ltd
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    • 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
    • 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
    • H02M1/36—Means for starting or stopping converters
    • 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
    • H02M1/0003—Details of control, feedback or regulation circuits
    • H02M1/0032—Control circuits allowing low power mode operation, e.g. in standby mode
    • 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
    • H02M1/0048—Circuits or arrangements for reducing losses
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)

Abstract

The invention provides a switching power supply with zero standby power consumption and electric equipment, wherein the power supply comprises a first switching tube, a second switching tube, a first capacitor, a second capacitor, a rectifying circuit and a detection processing control circuit; the first switch tube and the detection processing control circuit jointly form a driving circuit for controlling the switch state of the second switch tube, the detection processing control circuit detects the positive and negative polarities of the alternating current of the input power supply, and controls the grid voltage of the second switch tube by controlling the switch state of the first switch tube, so that the second switch tube correspondingly switches the switch state when the alternating current of the input power supply switches the direction; the detection processing control circuit also detects the voltage at two ends of the second capacitor, and when the detected voltage reaches the reference voltage, the first switch tube is controlled to be switched on, the second switch tube is switched off, and the first capacitor is connected in parallel to the input end of the power supply. The scheme provided by the invention can reduce the standby power consumption of the switching power supply to the microwatt level.

Description

Standby zero-power-consumption switching power supply and electric equipment
Technical Field
The invention relates to the technical field of switching power supplies, in particular to a switching power supply with zero standby power consumption and electric equipment.
Background
The zero-power-consumption switching power supplies on the market are only switching power supplies with standby power consumption of less than 5mW (according to the definition of IEC62301 standard, the standby power consumption is less than 5mW, namely, the zero-power-consumption switching power supplies can be called), and the power consumption of the switching power supplies is in the mW level.
The reason why the standby power consumption of the conventional zero-power switching power supply is maintained at mW level and cannot be lowered is that the starting circuit of the conventional switching power supply generally adopts a power-consuming resistor starting circuit (as shown in fig. 4), a power-consuming capacitor starting circuit (as shown in fig. 5), a starting circuit (as shown in fig. 6) in which a switching power supply chip absorbs current from the drain of an internal power MOSFET to charge a Vdd storage capacitor, and a high-voltage depletion type fet starting circuit (as shown in fig. 7) to start the switching power supply.
The starting circuits consume electric energy when the switching power supply is in no-load state, so that the standby power consumption of the switching power supply cannot be lower, and the complete zero-power standby cannot be realized.
Disclosure of Invention
The purpose of the invention is as follows: the invention provides a switching power supply with zero standby power consumption and electric equipment, and aims to overcome the defects of the prior art and provide the switching power supply with lower standby power consumption.
The technical scheme is as follows: in order to achieve the purpose, the invention provides the following technical scheme:
a zero power standby switching power supply comprising: the detection circuit comprises a first switching tube, a second switching tube, a first capacitor, a second capacitor, a rectification circuit and a detection processing control circuit;
one end of the rectifying circuit is connected with a first input end of the power supply, the other end of the rectifying circuit is connected with a drain electrode of a second switching tube, a source electrode of the second switching tube is connected with a second capacitor in series, the other end of the second capacitor is connected with a second input end of the power supply, and the voltage at two ends of the second capacitor is the output voltage of the power supply; the first capacitor is used as a starting circuit, one end of the first capacitor is connected with the first input end of the power supply, and the other end of the first capacitor is connected with the grid electrode of the second switching tube; the first switching tube and the detection processing control circuit jointly form a driving circuit for controlling the switching state of the second switching tube; the drain electrode of the first switching tube is connected with the grid electrode of the second switching tube, the source electrode of the first switching tube is connected with the second input end of the power supply, and the grid electrode of the first switching tube is controlled by the detection processing control circuit;
the detection processing control circuit detects the positive and negative polarities of the alternating current of the input power supply, controls the grid voltage of the second switching tube by controlling the switching state of the first switching tube, and enables the second switching tube to correspondingly switch the switching state when the alternating current of the input power supply switches the direction; when the second switch tube is conducted, the voltage of the input power supply charges the second capacitor, otherwise, the charging of the second capacitor is stopped; the detection processing control circuit also detects the voltage at two ends of the second capacitor, and when the detected voltage reaches the reference voltage, the first switch tube is controlled to be switched on, the second switch tube is switched off, and the first capacitor is connected in parallel to the input end of the power supply.
In the invention, the starting voltage of the detection processing control circuit is provided by the first capacitor, after the detection processing control circuit is started, whether the input alternating current is positive or negative is judged by detecting the positive and negative polarities of the alternating current input into the power supply, so that the conduction and the cut-off of the first switching tube are controlled, and the grid voltage of the second switching tube is controlled by the first switching tube, so that the second switching tube switches different switching states when the positive alternating current and the reverse alternating current are input, and the switching function of the switching power supply is realized. On the other hand, after the detection processing control circuit is started, the terminal voltage of the second capacitor (namely the output voltage of the power supply) is also detected, when the terminal voltage of the second capacitor reaches the reference voltage (the voltage when the second capacitor is fully charged), the first switching tube is controlled to be conducted, so that the second switching tube is cut off, and at the moment, the first capacitor is connected in parallel to the circuit through the first switching tube; when the terminal voltage of the second capacitor does not reach the reference voltage, the detection processing control circuit controls the first switching tube to be cut off, so that the second switching tube is switched on, and the alternating current of the input power supply continues to charge the second capacitor.
When the power supply is in no-load, the voltage at two ends of the second capacitor is reference voltage, and at this time, the detection processing control circuit can control the first switch tube to be switched on, so that the second switch tube is switched off, and the alternating current enters the power supply and then only has one path, namely the path from the first capacitor to the first switch tube.
The zero-power-consumption power supply formed by the circuit structure and the principle maintains stable output voltage in a standby state (no load) and simultaneously has zero input active power. In the long-time standby state, the output voltage may change due to factors such as air and small self-leakage of elements, and in this case, the detection processing control circuit can detect the change of the output voltage in time and instantly adjust and keep the output voltage in the standby state stable. When the zero-power-consumption power supply output is converted from no-load to loading operation, the power supply can output W-level stable voltage, so that a system formed by the power supply is awakened and works.
Several alternatives are provided below, but not as an additional limitation to the above general solution, but merely as a further addition or preference, each alternative being combinable individually for the above general solution or among several alternatives without technical or logical contradictions.
Optionally, the rectifying circuit is a rectifying diode.
Optionally, the first switch tube and the second switch tube are both NMOS tubes or both PMOS tubes.
Optionally, the second capacitor is an electrolytic capacitor.
The invention also provides electric equipment, which comprises the switching power supply.
Has the advantages that: compared with the prior art, the invention has the following advantages:
1. the invention adopts the first capacitor as the starting circuit, controls the second switch tube to be disconnected when the power supply is in no-load, and connects the starting circuit to the input end of the power supply in parallel. After the second switch tube is disconnected, all devices in the charging circuit of the second capacitor are controlled by voltage, so that no current exists in the charging circuit of the second capacitor, and no power consumption is generated; after the first capacitor is connected to the input end in parallel, the alternating current can only pass through the path of the first capacitor and the first switching tube, and the power of the first capacitor is reactive power and does not generate power consumption. The only power consumption of the whole power supply in the standby state is generated by the on-resistance of the first switching tube, and the on-resistance is only milli-even level, so that the power consumption is extremely low, and the power consumption of the switching power supply in the standby state can reach the microwatt level.
2. The invention can realize the standby zero-power-consumption power supply by only adopting few devices, and has extremely low cost.
3. The standby zero-power-consumption power supply provided by the invention can be used independently, and can also be directly grafted to various types and various different power switching power supply integrated circuits.
Drawings
Fig. 1 is a circuit diagram of an ac switching power supply of zero standby power consumption according to embodiment 1;
FIG. 2 is a waveform diagram of experimental simulation of example 1;
fig. 3 is a circuit diagram of an ac switching power supply of zero standby power consumption according to embodiment 2;
FIG. 4 is a schematic diagram of a prior art resistor start-up circuit;
FIG. 5 is a schematic diagram of a prior art capacitor start-up circuit;
FIG. 6 is a schematic diagram of a prior art start-up circuit of a switching power supply chip that draws current from the drain of an internal power MOSFET to charge a Vdd energy storage capacitor;
fig. 7 shows a prior art start-up circuit for a high voltage depletion mode fet.
Detailed Description
The invention will be further described with reference to the accompanying drawings and specific embodiments. It is to be understood that the present invention may be embodied in various forms, and that there is no intention to limit the invention to the specific embodiments illustrated, but on the contrary, the intention is to cover some exemplary and non-limiting embodiments shown in the attached drawings and described below.
It is to be understood that the features listed above for the different embodiments may be combined with each other to form further embodiments within the scope of the invention, where technically feasible. Furthermore, the particular examples and embodiments of the invention described are non-limiting, and various modifications may be made in the structure, steps, and sequence set forth above without departing from the scope of the invention.
The invention aims to provide a switching power supply, which can enable the power consumption generated by a starting circuit in a standby state to be close to zero, and further realize the zero power consumption of the power supply in the standby state.
In view of the above, the present invention provides a switching power supply with zero standby power consumption and an electric device, which will be described in detail with reference to the accompanying drawings by specific embodiments.
Example 1:
fig. 1 shows a specific circuit of the present switching power supply implementing standby zero power consumption, in this embodiment, two NMOS transistors m1 and m2 are used as switching transistors, a diode D1 is used as a rectifying device, and in addition, the present switching power supply further includes a first capacitor C1, a second capacitor C2 and a detection processing control circuit.
The drain electrode of the m2 is connected with the cathode of the diode D1, and the anode of the diode D1 is connected with the zero line N of the alternating current power supply; the grid of m2 is connected with C1 in series, and the other end of C1 is connected with the zero line N of an alternating current power supply; the source of m2 is connected in series with C2, the other end of C2 is connected with the phase line L of the alternating current power supply, and the two ends of C2 are the output ends of the power supply and are connected with a load; the drain of m1 is connected with the grid of m2, the source of m1 is connected with the phase line L of the alternating current power supply, and the grid of m1 is controlled by the detection processing control circuit.
The detection processing control circuit detects the polarity of the alternating current input to the power supply and performs the following control:
1.1. when the alternating current at the N end is positive, one path of the alternating current input to the power supply is applied to a drain stage of m2 through D1, and the other path of the alternating current is applied to a grid stage of m2 through a capacitor C1, so that m2 is conducted; at this time, the inspection process control circuit controls m1 to be in an off state, and positive charges are charged to C2 through the source stages of D1 and m 2.
1.2. When the alternating current at the N end is negative, the voltage of D1 is reversed, so m2 is cut off, and the charging of C2 is stopped; at this time, the C1 discharges, the detection processing control circuit controls the m1 to be switched on, the current passes through the branches C1 and m1, and no current flows in the charging circuit (branches D1, m2 and C2) of the capacitor C2. When the alternating current at the N end is positive again, the capacitor C1 starts to be charged, the detection processing control circuit controls the m1 to be cut off, the alternating current is applied to the grid of the m2 again through the C1, the m2 is conducted, and the alternating current charges the C2 again through the D1.
1.3. The detection processing control circuit also detects the voltage across C2 when detectingWhen the terminal voltage to C2 reaches the reference voltage (voltage at which C2 is full), the detection processing control circuit controls m1 to be turned on. This turns the gate m2 negative with respect to its source, turning it off, stopping charging C2, while the turn on of m1 connects capacitor C1 across the ac power supply. If the power supply is in a standby state (Vdd output is no load) at this time, no current passes through D1, m2 and C2 because m1 and m2 are both voltage-controlled; and at the moment, only one path of the alternating current flowing into the zero-power-consumption power supply is actually provided, namely N of the alternating current passes through C1 and m1 to the alternating current L. Value of current i flowing through C1C1= 2πfC1U (iC1Capacitor C1 current; f, alternating current power supply frequency; c1The capacitance of the capacitor C1; u alternating voltage). According to the circuit principle, the current i of the capacitor C1C1The phase of the voltage is 90 degrees ahead of the phase of the alternating voltage at two ends (see a zero-power-consumption power supply electric principle simulation waveform diagram 2), and the active power P = iC1Ucosφ=iC1Ucos90 ° =0, so the current through C1 is a reactive current, consuming no electrical power. The only power consumption of the whole power supply in the standby state is generated by the on-resistance of m1, and the on-resistance is only milli-even level, and the power consumption is extremely low, so that the power consumption of the switching power supply in the standby state can reach micro watt level.
Example 2:
fig. 3 shows another specific circuit of a switching power supply with zero standby power consumption, in this embodiment, two PMOS transistors m1 and m2 are used as switching transistors, a diode D1 is used as a rectifying device, and in addition, the switching power supply further includes a first capacitor C1, a second capacitor C2 and a detection processing control circuit.
The drain electrode of the m2 is connected with the anode of the diode D1, and the cathode of the diode D1 is connected with the zero line N of the alternating current power supply; the grid of m2 is connected with C1 in series, and the other end of C1 is connected with the zero line N of an alternating current power supply; the source of m2 is connected in series with C2, the other end of C2 is connected with the phase line L of the alternating current power supply, the voltage at two ends of C2 is the output voltage of the power supply, namely, two ends of C2 are connected in parallel with a load; the drain of m1 is connected with the grid of m2, the source of m1 is connected with the phase line L of the alternating current power supply, and the grid of m1 is controlled by the detection processing control circuit.
The detection processing control circuit detects the polarity of the alternating current input to the power supply and performs the following control:
2.1. when the alternating current at the N end is negative, a negative voltage is applied to the drain electrode of the m2 through the diode D1 on one hand, and is applied to the grid electrode of the m2 through the capacitor C1 on the other hand, so that the m2 is conducted. At this time, the detection processing control circuit controls m1 to be in a cut-off state, and the voltage of the input power is charged into the electrolytic capacitor C2 through D1 and m 2.
2.2. When the alternating current at the N terminal is positive, the capacitor C1 discharges to the N terminal and the L terminal through the m 1. At this time, the voltage across D1 is reversed, so MOS transistor m2 is turned off, and m2 is turned on until the ac current at the N terminal becomes negative, and the electrolytic capacitor C2 is restored to charge.
2.3. When the detection processing control circuit detects that the voltage at the C2 terminal reaches the reference voltage in the detection processing control circuit, the detection processing control circuit outputs a voltage control m1 to be turned on, so that the MOS transistor m2 is turned off, and the charging to the C2 is stopped. Meanwhile, the conduction of the m1 enables the capacitor C1 to be connected between the N end and the L end of the alternating current power supply in a lossless manner. If the power supply is in a standby state (Vdd output is no load) at this time, no current passes through D1, m2 and C2 because m1 and m2 are both voltage-controlled; and at the moment, only one path of the alternating current flowing into the zero-power-consumption power supply is actually provided, namely N of the alternating current passes through C1 and m1 to the alternating current L. According to circuit principles, the current through C1 is a reactive current, consuming no electrical power. The only power consumption of the whole power supply in the standby state is generated by the on-resistance of m1, and the on-resistance is only milli-even level, and the power consumption is extremely low, so that the power consumption of the switching power supply in the standby state can reach micro watt level.
The zero-power-consumption power supply formed by the circuit structures and principles described in embodiments 1 and 2 has zero input active power while maintaining a stable output voltage in a standby state (no load). In the long-time standby state, the output voltage may change due to factors such as air and small self-leakage of elements, and in this case, the detection processing control circuit can detect the change of the output voltage in time and instantly adjust and keep the output voltage in the standby state stable. When the zero-power-consumption power supply output is converted from no-load to loading operation, the power supply can output W-level stable voltage, so that a system formed by the power supply is awakened and works.
Example 3:
the embodiment further provides an electric device, and the electric device comprises the switching power supply.
It should be noted that in embodiments 1-3, the connection of the neutral wire and the phase wire can be reversed. The detection processing control circuit only needs to complete the corresponding function, and any scheme for realizing the function of the detection processing control circuit in the embodiment by adopting the prior art should be included in the protection scope of the present invention.
In examples 1-3, capacitor C2 is preferably an electrolytic capacitor for energy storage and filtering.
Compared with the existing zero-power-consumption power supply, the standby zero-power-consumption power supply described in the embodiment 1 and the embodiment 2 has at least the following advantages:
1. the adopted devices are few, except for a detection processing control circuit, only 5 low-value electronic elements of m1, m2, C1, C2 and D1 are used, and the zero-power-consumption power supply is enabled to be lowest in cost;
2. in the embodiment, no rectifier bridge or transformer or inductance element is used, so that EMC electromagnetic interference is not generated;
3. the embodiment can be used independently to form an independent zero-power-consumption power supply, and can also be directly connected to various types and various different power switching power supply integrated circuits. For example, the standby zero-power-consumption power supply described in this patent can be used to replace a start-up circuit of a switching power supply integrated circuit of a hundred watt or a kilowatt, so that the power consumption of the power supply is zero when the power supply is in standby.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (5)

1. A zero power standby switching power supply, comprising: the detection circuit comprises a first switching tube, a second switching tube, a first capacitor, a second capacitor, a rectification circuit and a detection processing control circuit;
one end of the rectifying circuit is connected with a first input end of the power supply, the other end of the rectifying circuit is connected with a drain electrode of a second switching tube, a source electrode of the second switching tube is connected with a second capacitor in series, the other end of the second capacitor is connected with a second input end of the power supply, and the voltage at two ends of the second capacitor is the output voltage of the power supply; the first capacitor is used as a starting circuit, one end of the first capacitor is connected with the first input end of the power supply, and the other end of the first capacitor is connected with the grid electrode of the second switching tube; the first switching tube and the detection processing control circuit jointly form a driving circuit for controlling the switching state of the second switching tube; the drain electrode of the first switching tube is connected with the grid electrode of the second switching tube, the source electrode of the first switching tube is connected with the second input end of the power supply, and the grid electrode of the first switching tube is controlled by the detection processing control circuit;
the detection processing control circuit detects the positive and negative polarities of the alternating current of the input power supply, controls the grid voltage of the second switching tube by controlling the switching state of the first switching tube, and enables the second switching tube to correspondingly switch the switching state when the alternating current of the input power supply switches the direction; when the second switch tube is conducted, the voltage of the input power supply charges the second capacitor, otherwise, the charging of the second capacitor is stopped; the detection processing control circuit also detects the voltage at two ends of the second capacitor, and when the detected voltage reaches the reference voltage, the first switch tube is controlled to be switched on, the second switch tube is switched off, and the first capacitor is connected in parallel to the input end of the power supply.
2. The switching power supply with zero standby power consumption as claimed in claim 1, wherein the rectifying circuit is a rectifying diode.
3. The switching power supply with zero standby power consumption according to claim 1, wherein the first switching transistor and the second switching transistor are both NMOS transistors or both PMOS transistors.
4. The switching power supply with zero standby power consumption as claimed in claim 1, wherein the second capacitor is an electrolytic capacitor.
5. An electrical apparatus, characterized in that the switching power supply of any one of claims 1 to 4 is included in the apparatus.
CN202010953063.4A 2020-09-11 2020-09-11 Standby zero-power-consumption switching power supply and electric equipment Active CN111817535B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113541454A (en) * 2021-07-29 2021-10-22 阳光电源股份有限公司 Switching power supply control circuit, and control method and device of switching power supply
CN115792364A (en) * 2023-02-07 2023-03-14 南京美斯玛微电子技术有限公司 Power consumption calculation method based on standby state analysis

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201985754U (en) * 2010-12-31 2011-09-21 黄敏 Start circuit device of switch power
CN202109612U (en) * 2011-06-13 2012-01-11 珠海格力电器股份有限公司 Control system for standby power consumption of air-conditioner outdoor unit
CN102739077A (en) * 2012-07-23 2012-10-17 电子科技大学 Auxiliary power supply of switching power supply
CN106452040A (en) * 2016-10-20 2017-02-22 广州金升阳科技有限公司 Starting circuit
CN107147279A (en) * 2017-05-30 2017-09-08 长沙方星腾电子科技有限公司 A kind of high-voltage starting circuit

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201985754U (en) * 2010-12-31 2011-09-21 黄敏 Start circuit device of switch power
CN202109612U (en) * 2011-06-13 2012-01-11 珠海格力电器股份有限公司 Control system for standby power consumption of air-conditioner outdoor unit
CN102739077A (en) * 2012-07-23 2012-10-17 电子科技大学 Auxiliary power supply of switching power supply
CN106452040A (en) * 2016-10-20 2017-02-22 广州金升阳科技有限公司 Starting circuit
CN107147279A (en) * 2017-05-30 2017-09-08 长沙方星腾电子科技有限公司 A kind of high-voltage starting circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113541454A (en) * 2021-07-29 2021-10-22 阳光电源股份有限公司 Switching power supply control circuit, and control method and device of switching power supply
CN115792364A (en) * 2023-02-07 2023-03-14 南京美斯玛微电子技术有限公司 Power consumption calculation method based on standby state analysis

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