CN209516960U - A kind of low power consumption switch power control system - Google Patents
A kind of low power consumption switch power control system Download PDFInfo
- Publication number
- CN209516960U CN209516960U CN201920372373.XU CN201920372373U CN209516960U CN 209516960 U CN209516960 U CN 209516960U CN 201920372373 U CN201920372373 U CN 201920372373U CN 209516960 U CN209516960 U CN 209516960U
- Authority
- CN
- China
- Prior art keywords
- power module
- power
- control
- mcu controller
- voltage
- 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.)
- Active
Links
Classifications
-
- 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
Abstract
The utility model relates to a kind of low power consumption switch power control systems, including control chip interconnected and AC-DC power module, the output end of the AC-DC power module is also connected with current collection circuit, the current collection circuit is used to detect the electric current of the AC-DC power module output, and is transferred to MCU controller；The MCU controller issues control signal when the current value received is less than setting value and is kept for a period of time, to the control chip, and the control chip enters intermittent duty according to the control signal control AC-DC power module received.The utility model can reduce power standby power consumption.
Description
Technical field
The utility model relates to power electronics fields, more particularly to a kind of low power consumption switch power control system.
Background technique
As energy efficiency and environmentally friendly become more and more important, people wait for that engine efficiency it is expected higher and higher, client to Switching Power Supply
It is required that the power supply product that power supply manufacturer provides is able to satisfy green energy resource standard, and six grades of the Energy Star requirements to Switching Power Supply
Be: rated power is the Switching Power Supply of 0~1W, 1~49W and 50W~250W, and stand-by power consumption need to be respectively smaller than 0.1W, 0.1W and
0.21W.And when most of Switching Power Supplies are transferred to underloading and standby mode by nominal load at present, power-efficient sharply declines, to
Engine efficiency cannot be met the requirements.Reduce Switching Power Supply idling consumption, improve to engine efficiency, first has to analysis Switching Power Supply loss
Composition.By taking flyback power supply as an example, working loss is mainly shown as: MOSFET conduction loss, MOSFET parasitic capacitance damage
Consumption switchs overlapping loss, PWM controller and its start-up resistor loss, output rectifying tube loss, clamp protection circuits loss etc..
The utility model inventors have found that in standby mode, main circuit current is smaller, and MOSFET turn-on time ton is very
Small, circuit works in DCM mode, therefore relevant conduction loss, and secondary commutation pipe loss etc. is smaller, is lost at this time mainly by parasitism
Capacity loss and start-up resistor loss are constituted, and the loss of parasitic capacitance loss is inherently present, and start-up resistor be lost be can
With what is controlled by additional auxiliary circuit.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of low power consumption switch power control systems, can reduce
Power standby power consumption.
The technical scheme adopted by the utility model to solve the technical problem is as follows: providing a kind of low power consumption switch power supply control
System, including control chip interconnected and AC-DC power module, the output end of the AC-DC power module are also connected with
Current collection circuit, the current collection circuit are used to detect the electric current of the AC-DC power module output, and are transferred to MCU
Controller；The MCU controller is when the current value received is less than setting value and is kept for a period of time, to the control chip
Control signal is issued, the control chip enters intermittent duty according to the control signal control AC-DC power module received.
The output end of the AC-DC power module is also connected with voltage collection circuit, and the voltage collection circuit is used to examine
The voltage of the AC-DC power module output is surveyed, and is transferred to MCU controller；Enter in DC power supplier and operates intermittently shape
After state, when the voltage value that the MCU controller receives is equal to rated operational voltage, then shutdown AC- is issued to control chip
The control signal of DC power module, when the voltage value that the MCU controller receives is less than the minimum voltage of standby mode, then
The control signal for opening AC-DC power module is issued to control chip.
The output end of the AC-DC power module also passes through DC-DC power module and is connected with MCU controller, the DC-DC
Power module is constituted using buck chip, for powering for MCU controller.
Beneficial effect
Due to the adoption of the above technical solution, the utility model compared with prior art, has the following advantages that and accumulates
Pole effect: the utility model feeds back to control chip by the size of current of real-time acquisition testing output end, then by control chip
The working condition for controlling AC-DC power module is in AC-DC module in the state that power supply does not work and operates intermittently shape
State, to achieve the purpose that low-power consumption.In addition, the utility model is by adding a detection voltage in AC-DC power module output end
Module, feed back to control chip to detect the output voltage size of AC-DC power module, exporting AC-DC power module
Voltage allows AC-DC power module to work lower than the minimum voltage time control coremaking sector-meeting that can be maintained in working condition, when what is reached
AC-DC power module is closed again when normal working voltage, maintains entire power-supply system to locate always with the smallest power consumption to realize
In standby mode.The utility model is used to buck chip as the power supply of MCU control panel, is had compared to conventional linear voltage regulator
Advantage low in energy consumption also achievees the purpose that reduce Switching Power Supply stand-by power consumption from another point of view.
Detailed description of the invention
Fig. 1 is the principles of the present invention block diagram.
Specific embodiment
The present invention will be further illustrated below in conjunction with specific embodiments.It should be understood that these embodiments are merely to illustrate this
Utility model rather than limitation the scope of the utility model.In addition, it should also be understood that, in the content for having read the utility model instruction
Later, those skilled in the art can make various changes or modifications the utility model, and such equivalent forms equally fall within this Shen
It please the appended claims limited range.
The embodiments of the present invention is related to a kind of low power consumption switch power control system, as shown in Figure 1, including mutual
The control chip and AC-DC power module of connection, the output end of the AC-DC power module are also connected with current collection circuit,
The current collection circuit is used to detect the electric current of the AC-DC power module output, and is transferred to MCU controller；The MCU
Controller issues control signal when the current value received is less than setting value and is kept for a period of time, to the control chip,
The control chip enters intermittent duty according to the control signal control AC-DC power module received.
The MCU control that present embodiment uses can be common 51 series monolithic, in the current value that will be received
When compared with setting value, analog-to-digital conversion can be first carried out by the analog signal of current value and switchs to digital signal, then by by two numbers
Subtract each other and compared according to obtained result to realize, above-mentioned D conversion method and comparative approach are that those skilled in the art are transporting
Common technological means when with single-chip microcontroller, the application is not related to the improvement to wherein algorithm, therefore repeats no more.
The output end of AC-DC power module in present embodiment is also connected with voltage collection circuit, the voltage acquisition
Circuit is used to detect the voltage of the AC-DC power module output, and is transferred to MCU controller；Enter in DC power supplier
After intermittent duty, when the voltage value that the MCU controller receives is equal to rated operational voltage, then to control chip hair
The control signal for turning off AC-DC power module out, when the voltage value that the MCU controller receives is less than the minimum of standby mode
When voltage, then the control signal for opening AC-DC power module is issued to control chip.The mode that voltage compares in present embodiment
Mode compared with electric current is similar, and details are not described herein.
Current collection circuit and voltage collection circuit in present embodiment are common electric current and voltage collection circuit,
Wherein, current collection circuit can be realized by LM358 chip, and voltage collection circuit can be realized using DAM-8041 module.
The output end of the AC-DC power module also passes through DC-DC power module and is connected with MCU controller, the DC-DC
Power module is used to power for MCU controller.Wherein, it is buck chip, this chip that the DC-DC power module, which can use,
Compared to the power consumption that the tube voltage drop of conventional linear voltage regulator generates, loss power is compared very little, is reduced from another point of view
The stand-by power consumption of power supply keeps this stand-by power consumption with the switching power control system of low-power consumption function smaller.
The working principle of the utility model is as follows:
The output electric current of AC-DC power module output end is acquired by a current collection circuit detection and is transferred to MCU
Controller, when MCU controller discovery detect output end current size lower than operating current after a certain period of time, MCU controller meeting
Control one signal of chip is fed back to, control chip judges that power supply is now in and does not have in harness standby mode accordingly.Then
AC-DC power module output voltage size is detected in the voltage collection circuit of AC-DC power module output end and is transferred to MCU control
Device processed, when the output voltage size that the discovery of MCU controller detects is equal to voltage rating, MCU controller control control chip
AC-DC power module is turned off, after shutdown, due to the effect of output end storage capacitor and inductance, and because is now in sky
Standby mode is carried, the decaying of output voltage may require that certain time, can be maintained in standby mode when output voltage decays to
When minimum voltage, MCU controller control control chip provides a high level signal, and AC-DC power module is made to open work, when
When the output voltage that MCU controller detects reaches the rated value of operating voltage again, the another secondary control control of MCU controller
Chip provides a low level signal, closes AC-DC power module, and then output voltage can decay again, loops back and forth like this,
Make AC-DC power module be in intermittent operating mode to reach reduce stand-by power consumption purpose while guarantee always in
Machine state.
It is not difficult to find that the utility model feeds back to control chip by the size of current of real-time acquisition testing output end, then
By the working condition of control chip controls AC-DC power module, between being in AC-DC module in the state that power supply does not work
Disconnected working condition, to achieve the purpose that low-power consumption.In addition, the utility model is by adding one in AC-DC power module output end
The module for detecting voltage, feeds back to control chip to detect the output voltage size of AC-DC power module, makes AC-DC power supply mould
Block allows AC-DC power module to work in output voltage lower than the minimum voltage time control coremaking sector-meeting that can be maintained in working condition,
AC-DC power module is closed again when the normal working voltage reached, maintains entire power supply system with the smallest power consumption to realize
System is in standby always.
Claims (3)
1. a kind of low power consumption switch power control system, including control chip interconnected and AC-DC power module, feature
It is, the output end of the AC-DC power module is also connected with current collection circuit, and the current collection circuit is for detecting institute
The electric current of AC-DC power module output is stated, and is transferred to MCU controller；The MCU controller is less than in the current value received
When setting value and holding a period of time, control signal is issued to the control chip, the control chip is according to the control received
Signal control AC-DC power module enters intermittent duty.
2. low power consumption switch power control system according to claim 1, which is characterized in that the AC-DC power module
Output end be also connected with voltage collection circuit, the voltage collection circuit is used to detect the AC-DC power module output
Voltage, and it is transferred to MCU controller；After DC power supplier enters intermittent duty, when the MCU controller receives
Voltage value be equal to rated operational voltage when, then to control chip issue shutdown AC-DC power module control signal, when described
When the voltage value that MCU controller receives is less than the minimum voltage of standby mode, is then issued to control chip and open AC-DC power supply
The control signal of module.
3. low power consumption switch power control system according to claim 1, which is characterized in that the AC-DC power module
Output end also pass through DC-DC power module and be connected with MCU controller, the DC-DC power module is constituted using buck chip,
For powering for MCU controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920372373.XU CN209516960U (en) | 2019-03-22 | 2019-03-22 | A kind of low power consumption switch power control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920372373.XU CN209516960U (en) | 2019-03-22 | 2019-03-22 | A kind of low power consumption switch power control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209516960U true CN209516960U (en) | 2019-10-18 |
Family
ID=68187613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920372373.XU Active CN209516960U (en) | 2019-03-22 | 2019-03-22 | A kind of low power consumption switch power control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209516960U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114019884A (en) * | 2021-11-16 | 2022-02-08 | Tcl家用电器（合肥）有限公司 | Household appliance power consumption control circuit and household appliance |
-
2019
- 2019-03-22 CN CN201920372373.XU patent/CN209516960U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114019884A (en) * | 2021-11-16 | 2022-02-08 | Tcl家用电器（合肥）有限公司 | Household appliance power consumption control circuit and household appliance |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11705821B2 (en) | Architecture for multi-port AC/DC switching mode power supply | |
| WO2017214027A1 (en) | Dynamic sharing average current mode control for active-reset and self-driven synchronous rectification for power converters | |
| CN209419485U (en) | Booster system response speed translation circuit based on PFM control | |
| US20120153855A1 (en) | Circuit of led driving power, driving power and lighting device | |
| CN109617412A (en) | Booster system response speed translation circuit and its control method based on PFM control | |
| CN103138558A (en) | Alternating current /direct current (AC/DC) dual-purpose compressor speed setting controller | |
| CN202455256U (en) | Speed adjustment controller of dual-purpose compressor with alternating current-direct current | |
| CN209516960U (en) | A kind of low power consumption switch power control system | |
| CN103187792A (en) | High energy efficiency uninterruptible high-frequency switching power supply in ATM | |
| CN101282090A (en) | Capacitance partial pressure DC voltage stabilizing power source | |
| CN109067174A (en) | A kind of switch converters | |
| CN202435258U (en) | Speed setting controller for AC-DC dual purpose compressor | |
| CN107666305B (en) | Intelligent switch | |
| CN202663314U (en) | AC (alternating current)-DC (direct current) switching power supply converter | |
| CN108258889A (en) | Auxiliary power supply of photovoltaic inverter system | |
| CN109586397B (en) | Power supply control circuit and electronic equipment | |
| CN209282906U (en) | Power circuit and electrical equipment | |
| CN203014706U (en) | Power supply device with high efficiency alternating current and direct current same port input for cameras | |
| CN102710148A (en) | Alternating current-direct current (AC-DC) switching power supply converter | |
| CN112467995A (en) | High-efficiency energy-saving frequency-conversion voltage-regulation energy-recovery type electronic load device | |
| CN215267604U (en) | Intelligent circuit breaker | |
| CN102739046B (en) | Auxiliary power supply circuit without electrolytic capacitor | |
| CN110474534A (en) | A kind of non-isolated voltage changer of modified | |
| CN217522740U (en) | Direct current voltage regulating circuit, circuit board and electrical apparatus | |
| CN212751871U (en) | Control circuit of massage chair |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |