CN107979272A - Circuit for module power supply - Google Patents
Circuit for module power supply Download PDFInfo
- Publication number
- CN107979272A CN107979272A CN201711370045.8A CN201711370045A CN107979272A CN 107979272 A CN107979272 A CN 107979272A CN 201711370045 A CN201711370045 A CN 201711370045A CN 107979272 A CN107979272 A CN 107979272A
- Authority
- CN
- China
- Prior art keywords
- circuit
- capacitance
- resistance
- transistor
- input
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
-
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
-
- 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
- H02M1/322—Means for rapidly discharging a capacitor of the converter for protecting electrical components or for preventing electrical shock
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
Present disclose provides a kind of circuit for module power supply, including：Input terminal, receives input signal；Input rectifying unit, rectification processing is carried out to the input signal；Correction and converter unit, carry out the signal after the input rectifying cell processing power factor correction and resonant transformation, and the correction and converter unit include the first transistor；Rectification unit is exported, rectification processing is carried out to the signal after the correction and converter unit processing；Output terminal, the signal after output output rectification unit processing；And control unit, for when detecting that no input signal is inputted from the input terminal, controlling the first transistor to close, discharge loop is formed with least one capacitance in the circuit and at least one resistance when the first transistor closes.The disclosure additionally provides a kind of method of work for module power supply.
Description
Technical field
This disclosure relates to a kind of circuit for module power supply and a kind of method of work for module power supply.
Background technology
With the fast development of electronic technology, occur more and more electronic equipments in life.When electronic equipment powers off,
Usual power source internal, which still has, does not discharge complete current/voltage, but these do not discharge complete current/voltage and can cause
Device loss even safety problem.The prior art additionally increases multiple resistor coupled in parallel usually in power supply and forms " dual fail-safe " electric discharge
Circuit does not discharge complete current/voltage with discharge power source internal.But " dual fail-safe " discharge loop is multiple due to adding
Resistance causes the loss of power supply to increase.
The content of the invention
An aspect of this disclosure provides a kind of circuit for module power supply, including input terminal, input rectifying unit,
Correction and converter unit, output rectification unit, output terminal and control unit.Input terminal receives input signal, input rectifying list
Member carries out the input signal rectification processing, and correction and converter unit carry out the signal after the input rectifying cell processing
Power factor correction and resonant transformation, the correction and converter unit include the first transistor, and output rectification unit is rectified to described
Just and the signal after converter unit processing carries out rectification processing, the signal after output terminal output output rectification unit processing, control
Unit is used for when detecting that no input signal input from the input terminal, controls the first transistor closure, and described the
When one transistor closes discharge loop is formed with least one capacitance in the circuit and at least one resistance.
Alternatively, above-mentioned input rectifying unit includes：At least one second resistance, at least one second resistance are not having
Have input signal from the input terminal input when with the circuit at least one capacitance formed discharge loop.
Alternatively, above-mentioned at least one second resistance includes multiple resistance of serial connection.
Alternatively, above-mentioned correction and converter unit include first resistor, during the first transistor closure with the circuit
In at least one capacitance and at least one resistance form discharge loop, including, during the first transistor closure with the electricity
At least one capacitance and the first resistor in road form discharge loop.
Alternatively, at least one capacitance and at least one resistance shape when above-mentioned the first transistor closes and in the circuit
Into discharge loop, including：During the first transistor closure, closed loop is formed with least one capacitance and at least one resistance
Circuit, the voltage at least one capacitance in the closed loop pass through at least one conductive discharge.
Another aspect of the disclosure provides a kind of method of work for module power supply, and the module power supply includes defeated
Enter end, input rectifying unit, correction and converter unit, output rectification unit, output terminal and control unit, the method bag
Include：Described control unit has detected whether that input signal is inputted from the input terminal, is detecting no input signal from described
When input terminal inputs, the first transistor closure of the correction and converter unit is controlled, during the first transistor closure and institute
State at least one capacitance in circuit and at least one resistance forms discharge loop, wherein, the input terminal, which is used to receive, to be inputted
Signal, the input rectifying unit be used for the input signal carry out rectification processing, it is described correction and converter unit be used for pair
Signal after the input rectifying cell processing carries out power factor correction and resonant transformation, and the output rectification unit is used for pair
Signal after the correction and converter unit processing carries out rectification processing, and the output terminal is used to export output rectification unit processing
Signal afterwards.
Alternatively, above-mentioned input rectifying unit includes：At least one second resistance, at least one second resistance are not having
Have input signal from the input terminal input when with the circuit at least one capacitance formed discharge loop.
Alternatively, above-mentioned at least one second resistance includes multiple resistance of serial connection.
Alternatively, above-mentioned correction and converter unit include first resistor, during the first transistor closure with the circuit
In at least one capacitance and at least one resistance form discharge loop, including, during the first transistor closure with the electricity
At least one capacitance and the first resistor in road form discharge loop.
Alternatively, at least one capacitance and at least one resistance shape when above-mentioned the first transistor closes and in the circuit
Into discharge loop, including：During the first transistor closure, closed loop is formed with least one capacitance and at least one resistance
Circuit, the voltage at least one capacitance in the closed loop pass through at least one conductive discharge.
Brief description of the drawings
In order to be more fully understood from the disclosure and its advantage, referring now to being described below with reference to attached drawing, wherein：
Fig. 1 diagrammatically illustrates the work for the circuit of module power supply and for module power supply according to the embodiment of the present disclosure
Make the application scenarios of method；
Fig. 2 diagrammatically illustrates the block diagram of the circuit for module power supply according to the embodiment of the present disclosure；
Fig. 3 diagrammatically illustrates the signal of the discharge loop of the circuit for module power supply according to the embodiment of the present disclosure
Figure；
Fig. 4 diagrammatically illustrates the partial schematic diagram of the circuit for module power supply according to the embodiment of the present disclosure；And
Fig. 5 diagrammatically illustrates the flow of the method for work of the circuit for module power supply according to the embodiment of the present disclosure
Figure.
Embodiment
Hereinafter, it will be described with reference to the accompanying drawings embodiment of the disclosure.However, it should be understood that these descriptions are simply exemplary
, and it is not intended to limit the scope of the present disclosure.In addition, in the following description, the description to known features and technology is eliminated, with
Avoid unnecessarily obscuring the concept of the disclosure.
Term as used herein is not intended to limit the disclosure just for the sake of description specific embodiment.Use herein
Term " comprising ", "comprising" etc. indicate the presence of the feature, step, operation and/or component, but it is not excluded that in the presence of
Or addition one or more other features, step, operation or components.
All terms (including technical and scientific term) as used herein have what those skilled in the art were generally understood
Implication, unless otherwise defined.It should be noted that term used herein should be interpreted that with consistent with the context of this specification
Implication, without should by idealization or it is excessively mechanical in a manner of explain.
, in general should be according to this in the case of using " in A, B and C etc. at least one " such statement is similar to
Field technology personnel are generally understood that the implication of the statement to make an explanation (for example, " having system at least one in A, B and C "
Should include but not limited to individually with A, individually with B, individually with C, with A and B, with A and C, with B and C, and/or
System with A, B, C etc.).In the case of using " in A, B or C etc. at least one " such statement is similar to, it is general come
Say be generally understood that the implication of the statement to make an explanation (for example, " having in A, B or C at least according to those skilled in the art
The system of one " should include but not limited to individually with A, individually with B, individually with C, with A and B, with A and C, with
B and C, and/or system etc. with A, B, C).It should also be understood by those skilled in the art that substantially arbitrarily represent two or more
The adversative conjunction and/or phrase of optional project, either in specification, claims or attached drawing, shall be construed as
Give including one of these projects, the possibility of these projects either one or two projects.For example, " A or B " should for phrase
It is understood to include " A " or " B " or " possibility of A and B ".
Embodiment of the disclosure provides a kind of circuit for module power supply, including：Input terminal, receives input signal,
Input rectifying unit, carries out input signal rectification processing, correction and converter unit, to the signal after input rectifying cell processing
Carry out power factor correction and resonant transformation, correction and converter unit include the first transistor, export rectification unit, to correcting and
Signal after converter unit processing carries out rectification processing, output terminal, the signal after output output rectification unit processing, and control
Unit, for when detecting that no input signal is inputted from input terminal, control the first transistor closure, the first transistor to close
When with circuit at least one capacitance and at least one resistance formed discharge loop.
According to the embodiment of the present disclosure, the alternating current that the circuit in module power supply detects power input by control unit is defeated
Enter situation, when electronic equipment powers off, control unit detects that the input terminal of power supply does not have alternating current input, at this time control unit
Transistor turns in control circuit, transistor form discharge loop with the capacitance in circuit and resistance, which will be disconnected
The electricity (voltage/current) of the power source internal remnants of electronic equipment is discharged after electricity, at least partly reduces remaining capacity
Loss to electronic component, has ensured electronic equipment and the Electrical Safety of user.And the circuit that the embodiment of the present disclosure provides
Electric discharge is realized by original electronic component in circuit, reduces the electricity consumption caused by when circuit works of unnecessary arresting element and damages
Consumption.
Fig. 1 diagrammatically illustrates the work for the circuit of module power supply and for module power supply according to the embodiment of the present disclosure
Make the application scenarios of method.
As shown in Figure 1, the application scenarios 100 can for example include electronic equipment 101 and module power supply 102.Wherein, mould
Group power supply 102 can be for example built in electronic equipment 101, or external device is connected with electronic equipment 101.
As shown in Figure 1, the electronic equipment 101 of the embodiment of the present disclosure can be for example desktop computer, notebook electricity can also be
The various electronics such as brain.Wherein, when such as electronic equipment 101 is desktop computer, module power supply 102 can for example be built in desk-top
In the host of machine.
According to the embodiment of the present disclosure, module power supply 102 for example can be the module comprising power supply circuit, module power supply 102
Comprising power supply circuit in the extraneous alternating current of connection, such as can be as the power supply source of electronic equipment 101.Wherein, module
The inside of power supply 102 includes discharge loop, when extraneous alternating current powers off (such as user's normal switching-off electronic equipment 101, pull out electricity
Power-off of electronic equipment 101 etc. caused by the attaching plug or electronic failure of sub- equipment), electronic equipment 101 enters shutdown
State, the remaining capacity of electronic equipment 101 can be discharged by the discharge loop of module power supply 102, subtracted at least in part
Lack loss of the remaining capacity to electronic component, ensure electronic equipment and the safety of user.
With reference to the application scenarios of Fig. 1, the use according to disclosure illustrative embodiments is described with reference to 2~Fig. 4 of figure
In the circuit of module power supply.It should be noted that above application scene is for only for ease of and understands spirit and principles of the present invention
And show, embodiments of the present invention are unrestricted in this regard.On the contrary, embodiments of the present invention can be applied to fit
Any scene.
Fig. 2 diagrammatically illustrates the block diagram of the circuit for module power supply according to the embodiment of the present disclosure.
As shown in Fig. 2, the circuit for module power supply can for example include input terminal 210, input rectifying unit 220, rectify
Just and converter unit 230, output rectification unit 240, output terminal 250 and control unit 260 etc..
According to the embodiment of the present disclosure, the input terminal 210 of circuit, for receiving input signal.
According to the embodiment of the present disclosure, the input terminal 210 of module power circuit for example can be used for the input letter of receiving circuit
Number.Wherein, input signal for example can be the electric signal of extraneous input module power supply, such as can receive alternating current from the external world,
The alternating current that module power supply is received by input terminal 210 is used for the work for supporting electronic equipment.
According to the embodiment of the present disclosure, input rectifying unit 220, rectification processing is carried out to input signal.
In the embodiments of the present disclosure, input rectifying unit 220 can for example include transformer, wave filter, diode, electricity
The devices such as appearance, resistance.Specifically, input rectifying unit 220 is friendship to input signal progress rectification processing, such as in input signal
During galvanic electricity, input rectifying unit 220 carries out rectification processing to input AC electricity, and alternating current is converted to direct current.
According to the embodiment of the present disclosure, correction and converter unit 230, power is carried out to the signal after input rectifying cell processing
Factor correction and resonant transformation, correction and converter unit 230 include the first transistor.
According to the embodiment of the present disclosure, correction and converter unit 230 can for example include power factor correction part and resonance
Conversion section.Wherein, correction and converter unit 230 carry out power factor correction to the signal after the processing of input rectifying unit 220
(Power Factor Correction, PFC) and resonant transformation, including power factor correction part is to input rectifying unit 220
Signal after processing carries out power factor correction, and resonant transformation part carries out the signal after the processing of input rectifying unit 220 humorous
Shake conversion.
In the embodiments of the present disclosure, power factor for example can be circuit effective power with total power consumption (apparent energy) it
Between relation, that is, the ratio of effective power divided by total power consumption (apparent energy).Power factor can for example weigh electronics
The degree that equipment efficiently uses electric power, when power factor value is bigger, shows that electronic equipment is higher to electric power utilization rate.Therefore exist
In modular circuit, the power factor of electronic equipment is improved in module power circuit using PFC.
In the embodiments of the present disclosure, the resonant transformation part included in the circuit of module power supply for example can include inductance,
The device such as capacitance and resistive element.Wherein, resonant transformation part carries out resonance change to the signal after the processing of input rectifying unit 220
Change, such as can be the signal after being handled by resonant transformation partial adjustment input rectifying unit 220, such as by adjusting circuit
The frequency of electric signal export burning voltage.
According to the embodiment of the present disclosure, correction and converter unit 230 include the first transistor, which for example can be
MOS transistor (transistor of metal-oxide semiconductor (MOS) (Metal Oxide Semiconductor) structure), such as can be
P-type metal-oxide-semiconductor or N-type metal-oxide-semiconductor.
According to the embodiment of the present disclosure, rectification unit 240 is exported, the signal after handling correction and converter unit 230 carries out
Rectification is handled.
In the embodiments of the present disclosure, output rectification unit 240 can for example include output rectification filter capacitor.Export whole
Flow unit 240 for example can carry out rectification processing to the signal after correction and the processing of converter unit 230.Led to by the signal of circuit
The rectification processing of output rectification unit 240 is crossed, more clean electric signal can be obtained.Specifically, for example correct and convert and is single
Signal after the processing of member 230 is the direct current containing certain clutter, is somebody's turn to do the direct current containing clutter by exporting rectification unit 240
After rectification, the less clean direct current of clutter is obtained.For example, the clutter in electric signal is absorbed by output rectification filter capacitor
Obtain clean electric signal.
According to the embodiment of the present disclosure, output terminal 250, the signal after the output output processing of rectification unit 240.
According to the embodiment of the present disclosure, the output terminal 250 of module power circuit for example can be by output rectification unit 240
Signal output after reason to load, such as can be by export after rectification unit 240 is handled containing less clean straight of clutter
Stream output module power supply, such as be output in electronic equipment, with the normal work of electronic device.
According to the embodiment of the present disclosure, the control unit 260 in module power supply, for detecting no input signal from defeated
When entering the input of end 210, control the first transistor closure, when the first transistor closes with least one capacitance and at least in circuit
One resistance forms discharge loop.
According to the embodiment of the present disclosure, multiple capacitances and multiple resistance can also be for example included in module power circuit,
When control unit 260 is detected in no input signal input module power supply, in control unit control correction and converter unit
The first transistor closes, when the first transistor closes, the transistor and at least one capacitance in circuit and at least one
Resistance forms discharge loop, by electricity remaining in discharge loop release circuit, ensures power safety.
Fig. 3 diagrammatically illustrates the signal of the discharge loop of the circuit for module power supply according to the embodiment of the present disclosure
Figure.
As shown in figure 3, control unit 260 can for example include an integrated chip 261, which for example can be with
It is power factor correction integrated chip (PFC IC), when integrated chip investigation determines input AC electricity power-off, integrated chip
261 provide discharge drive signal enters conducting to the grid of the first transistor 231 (MOS transistor), control the first transistor 231
State so that the first transistor 231 of the conducting and the capacitance in circuit and resistance form discharge loop, remaining in release circuit
Electricity.
According to the embodiment of the present disclosure, at least one capacitance 310 and at least one resistance can be for example included in circuit
320。
Wherein, 320 shape of at least one capacitance 310 and at least one resistance when the first transistor 231 closes and in circuit
Into discharge loop, including：
(1) when the first transistor 231 closes, form closed loop with least one capacitance 310 and at least one resistance 320 and return
Road.
According to the embodiment of the present disclosure, when the first transistor 231 closes (conducting), with least one capacitance 310 and at least
The closed loop that one resistance 320 is formed is as shown in figure 4, the remaining capacity in power supply is discharged by the closed loop.
(2) voltage at least one capacitance 310 in closed loop is discharged by least one resistance 320.
According to the embodiment of the present disclosure, the remaining capacity in power supply is discharged by the closed loop, specifically, in circuit
Voltage for example can reside at least one capacitance 310, the voltage at least one capacitance 310 passes through at least one resistance
320 are discharged, i.e., at least one resistance 320 consumes the voltage at least one capacitance 310, reach remaining electricity in release circuit
The effect of amount.
Fig. 4 diagrammatically illustrates the partial schematic diagram of the circuit for module power supply according to the embodiment of the present disclosure.
As shown in figure 4, input terminal 210, input rectifying unit of the part of the circuit of module power supply for example including circuit
220 and correction and converter unit 230.
As shown in figure 4, the correction and converter unit 230 in circuit include first resistor 401.
According to the embodiment of the present disclosure, at least one capacitance 310 and at least one when the first transistor 231 closes and in circuit
A resistance 320 forms discharge loop, including, at least one capacitance 310 and first when the first transistor 231 closes and in circuit
Resistance 401 forms discharge loop.
In the embodiments of the present disclosure, at least one capacitance 310 is such as can include capacitance 403 and capacitance 404.
In the embodiments of the present disclosure, first resistor 401 can be for example connected with the first transistor 231, the first transistor 231
Discharge loop is formed with least one capacitance 310 in circuit and first resistor 401 during closure, specifically, working as control unit 260
Integrated chip investigation to alternating current power off when, integrated chip can for example send out a voltage signal to the first transistor
231, the first transistor 231 is turned on when receiving the voltage signal, the first transistor 231 and capacitance of the conducting at this time
403 or capacitance 404 and first resistor 401 form discharge loop, the remaining capacity in circuit passes through first in discharge loop
Resistance 401 discharges, i.e., first resistor 401 consumes the remaining capacity in circuit, completes the discharging function of circuit.
According to the embodiment of the present disclosure, for module power supply circuit except including input terminal 210, input rectifying unit 220,
Outside correction and converter unit 230, output rectification unit 240, output terminal 250 and control unit 260, such as it can also include
Output protection integrated chip control unit and cooling fan circuit units etc..It is it should be appreciated that unlimited in the embodiment of the present disclosure
The concrete form of the circuit connecting mode of molding group power supply and the device of circuit, those skilled in the art can be according to practical applications
Situation is specifically set.
According to the embodiment of the present disclosure, the alternating current that the circuit in module power supply detects power input by control unit is defeated
Enter situation, when electronic equipment powers off, control unit detects that the input terminal of power supply does not have alternating current input, at this time control unit
Transistor turns in control circuit, transistor form discharge loop with the capacitance in circuit and resistance, which will be disconnected
The electricity of the power source internal remnants of electronic equipment is discharged after electricity, is reduced the electricity loss of electronic equipment and is ensured that electronics is set
Standby and user power utilization is safe.
Another embodiment of the present disclosure is as described below.
As shown in figure 4, the input rectifying unit 220 of circuit includes：At least one second resistance 402, this at least one
Two resistance 402 are formed when no input signal is inputted from input terminal 210 with least one capacitance 310 in circuit to discharge back
Road.
According to the embodiment of the present disclosure, at least one second resistance 402 includes multiple resistance of serial connection.
According to the embodiment of the present disclosure, when no input signal is inputted from input terminal 210, pass through the plurality of serial connection
At least one capacitance 310 in resistance and circuit forms discharge loop, a for example, at least capacitance can be capacitance 403 and
Capacitance 404, such as the plurality of resistance form discharge loop with capacitance 403 or capacitance 404, and release is in the power-off state in circuit
Remaining electricity.Specifically, electricity remaining in circuit for example can be, it is residual in storage circuit in capacitance 403 or capacitance 404
Remaining voltage, the resistance of the plurality of serial connection and the discharge loop of capacitance 403 or the formation of capacitance 404 carry out electric discharge and include, electricity
The voltage held in 403 or capacitance 404 is consumed by the resistance of the plurality of serial connection, is realized and is completed remaining capacity in circuit
Discharge effect.
According to the embodiment of the present disclosure, the circuit in module power supply does not have when electronic equipment powers off in the input terminal of power supply
When having alternating current input, discharge loop, the discharge loop are formed by the capacitance in the resistance and circuit of multiple serial connections
The electricity of electronic equipment power source internal residual after power-off is discharged, the resistance of the plurality of serial connection can also ensure that power supply
Light-load energy saving, the discharge loop that the resistance of the plurality of serial connection is formed controls the first transistor to turn on to be formed with control unit
Discharge loop can discharge electricity remaining in power supply at the same time, reach reduce electronic equipment electricity loss and ensure electronics
The double shield of equipment and user power utilization safety.
Fig. 5 diagrammatically illustrates the flow of the method for work of the circuit for module power supply according to the embodiment of the present disclosure
Figure.
As shown in figure 5, this method includes operation S501~S502.
According to the embodiment of the present disclosure, a kind of method of work for module power supply, the module power supply include input terminal 210,
Input rectifying unit 220, correction and converter unit 230, output rectification unit 240, output terminal 250 and control unit 260.
In operation S501, control unit 260 has detected whether that input signal is inputted from input terminal 210.
According to the embodiment of the present disclosure, control unit 260 can for example include an integrated chip 261, the integrated chip 261
Such as can be power factor correction integrated chip (PFC IC), control unit 260 has detected whether input signal from input terminal 210
Input, such as can be that the investigation of integrated chip 261 judges input AC electricity power-off.
In operation S502, when detecting that no input signal is inputted from input terminal 210, control correction and converter unit
230 the first transistor 231 closes, at least one capacitance and at least one electricity when the first transistor 231 closes and in circuit
Resistance forms discharge loop.
According to the embodiment of the present disclosure, multiple capacitances and multiple resistance can also be for example included in module power circuit,
When control unit 260 is detected in no alternating current input module power supply, the control of control unit 260 correction and converter unit 230
In 231 pipe of first crystal closure, when the first transistor 231 close, at least one capacitance in the transistor and circuit with
And at least one resistance forms discharge loop, by electricity remaining in discharge loop release circuit, power safety is ensured.
For example, when integrated chip investigation judges input AC electricity power-off, integrated chip 261 provides discharge drive signal and arrives
The grid of the first transistor 231 (MOS transistor), control the first transistor 231 enter conducting state so that the first of the conducting
Capacitance and resistance in transistor 231 and circuit form discharge loop, remaining capacity in release circuit.
According to the embodiment of the present disclosure, the alternating current that the circuit in module power supply detects power input by control unit is defeated
Enter situation, when electronic equipment powers off, control unit detects that the input terminal of power supply does not have alternating current input, at this time control unit
Transistor turns in control circuit, transistor form discharge loop with the capacitance in circuit and resistance, which will be disconnected
The electricity of the power source internal remnants of electronic equipment is discharged after electricity, is reduced the electricity loss of electronic equipment and is ensured that electronics is set
Standby and user power utilization is safe.
According to the embodiment of the present disclosure, input terminal 210 is used to receive input signal, and input rectifying unit 220 is used for input
Signal carries out rectification processing, and correction and converter unit 230 are used to carry out power factor to the signal after input rectifying cell processing
Correction and resonant transformation, output rectification unit 240 is used to carry out rectification processing to the signal after correction and converter unit processing, defeated
Outlet 250 is used to export the signal after output rectification unit processing.
In the embodiments of the present disclosure, the input terminal 210 of the circuit of module power supply, input rectifying unit 220, correction and conversion
The method that unit 230, output rectification unit 240, output terminal 250 and control unit 260 perform as above first embodiment institute
State, details are not described herein.
According to the embodiment of the present disclosure, the method for work for the circuit of module power supply further includes, and the first transistor 231 closes
When with circuit at least one capacitance 310 and at least one resistance 320 formed discharge loop, including：The first transistor 231 closes
During conjunction, closed loop is formed with least one capacitance 310 and at least one resistance 320.At least one capacitance in closed loop
Voltage on 310 is discharged by least one resistance 320.Specific method of work is as above described in first embodiment, herein no longer
Repeat.
According to the embodiment of the present disclosure, the method for work for the circuit of module power supply further includes, correction and converter unit 230
Including first resistor 401.At least one capacitance 310 and at least one resistance 320 when the first transistor 231 closes and in circuit
Discharge loop is formed, including, 401 shape of at least one capacitance 310 and first resistor when the first transistor 231 closes and in circuit
Into discharge loop.Specific method of work is as above described in first embodiment, and details are not described herein.
It is as described below according to another method of work of the circuit for module power supply of the embodiment of the present disclosure.
According to the embodiment of the present disclosure, the input rectifying unit 220 of circuit includes：At least one second resistance 402, this is at least
One second resistance 402 is formed with least one capacitance 310 in circuit when no input signal is inputted from input terminal 210 and put
Electrical circuit.Wherein, at least one second resistance 402 includes multiple resistance of serial connection.Specific method of work as above second
Described in embodiment, details are not described herein.
Although the disclosure, art technology has shown and described in the certain exemplary embodiments with reference to the disclosure
Personnel it should be understood that in the case of the spirit and scope of the present disclosure limited without departing substantially from the following claims and their equivalents,
A variety of changes in form and details can be carried out to the disclosure.Therefore, the scope of the present disclosure should not necessarily be limited by above-described embodiment,
But should be not only determined by appended claims, also it is defined by the equivalent of appended claims.
Claims (10)
1. a kind of circuit for module power supply, including：
Input terminal, receives input signal；
Input rectifying unit, rectification processing is carried out to the input signal；
Correction and converter unit, power factor correction and resonant transformation are carried out to the signal after the input rectifying cell processing,
The correction and converter unit include the first transistor；
Rectification unit is exported, rectification processing is carried out to the signal after the correction and converter unit processing；
Output terminal, the signal after output output rectification unit processing；And
Control unit, for when detecting that no input signal is inputted from the input terminal, controlling the first transistor to close
Close, discharge loop is formed with least one capacitance in the circuit and at least one resistance when the first transistor closes.
2. circuit according to claim 1, wherein, the input rectifying unit includes：
At least one second resistance, at least one second resistance is when no input signal is inputted from the input terminal and institute
At least one capacitance stated in circuit forms discharge loop.
3. circuit according to claim 2, wherein, at least one second resistance includes multiple electricity of serial connection
Resistance.
4. circuit according to claim 1, wherein：
The correction and converter unit include first resistor；
Discharge loop is formed with least one capacitance in the circuit and at least one resistance during the first transistor closure,
Including being formed and being discharged back with least one capacitance in the circuit and the first resistor when the first transistor closes
Road.
5. circuit according to claim 1, wherein, during the first transistor closure with it is at least one in the circuit
Capacitance and at least one resistance form discharge loop, including：
During the first transistor closure, closed loop is formed with least one capacitance and at least one resistance；
The voltage at least one capacitance in the closed loop passes through at least one conductive discharge.
6. a kind of method of work for module power supply, the module power supply includes input terminal, input rectifying unit, correction and change
Unit, output rectification unit, output terminal and control unit are changed, the described method includes：
Described control unit has detected whether that input signal is inputted from the input terminal；
When detecting that no input signal is inputted from the input terminal, the first transistor of the correction and converter unit is controlled
Closure, forms with least one capacitance in the circuit and at least one resistance when the first transistor closes and discharges back
Road,
Wherein, the input terminal is used to receive input signal, and the input rectifying unit is used to carry out the input signal whole
Stream process, it is described correction and converter unit be used for after the input rectifying cell processing signal carry out power factor correction and
Resonant transformation, the output rectification unit are used to carry out rectification processing, institute to the signal after the correction and converter unit processing
Output terminal is stated to be used to export the signal after rectification unit processing.
7. according to the method described in claim 6, wherein, the input rectifying unit includes：
At least one second resistance, at least one second resistance is when no input signal is inputted from the input terminal and institute
At least one capacitance stated in circuit forms discharge loop.
8. according to the method described in claim 7, wherein, at least one second resistance includes multiple electricity of serial connection
Resistance.
9. according to the method described in claim 6, wherein：
The correction and converter unit include first resistor；
Discharge loop is formed with least one capacitance in the circuit and at least one resistance during the first transistor closure,
Including being formed and being discharged back with least one capacitance in the circuit and the first resistor when the first transistor closes
Road.
10. according to the method described in claim 6, wherein, during the first transistor closure with least one in the circuit
A capacitance and at least one resistance form discharge loop, including：
During the first transistor closure, closed loop is formed with least one capacitance and at least one resistance；
The voltage at least one capacitance in the closed loop passes through at least one conductive discharge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711370045.8A CN107979272A (en) | 2017-12-18 | 2017-12-18 | Circuit for module power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711370045.8A CN107979272A (en) | 2017-12-18 | 2017-12-18 | Circuit for module power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107979272A true CN107979272A (en) | 2018-05-01 |
Family
ID=62006850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711370045.8A Pending CN107979272A (en) | 2017-12-18 | 2017-12-18 | Circuit for module power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107979272A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102244459A (en) * | 2010-05-13 | 2011-11-16 | Nxp股份有限公司 | SMPS having a safety arrangement, a method of operating a SMPS, and a controller therefor |
| US20120120692A1 (en) * | 2010-11-16 | 2012-05-17 | Samsung Electronics Co., Ltd. | Apparatus and method for switch mode power supply |
| CN102801339A (en) * | 2012-08-28 | 2012-11-28 | 矽力杰半导体技术(杭州)有限公司 | AC/DC voltage converting circuit with low stand-by power consumption and control method thereof |
| US20130148384A1 (en) * | 2011-12-07 | 2013-06-13 | Samsung Electro-Mechanics Co., Ltd. | Integrated resonance and power factor correction control integrated circuit and power converter |
| CN104143819A (en) * | 2013-05-07 | 2014-11-12 | 海洋王（东莞）照明科技有限公司 | Filter capacitor bleeder circuit |
| CN105162313A (en) * | 2015-08-04 | 2015-12-16 | 广东欧珀移动通信有限公司 | Flyback switching power supply |
-
2017
- 2017-12-18 CN CN201711370045.8A patent/CN107979272A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102244459A (en) * | 2010-05-13 | 2011-11-16 | Nxp股份有限公司 | SMPS having a safety arrangement, a method of operating a SMPS, and a controller therefor |
| US20120120692A1 (en) * | 2010-11-16 | 2012-05-17 | Samsung Electronics Co., Ltd. | Apparatus and method for switch mode power supply |
| US20130148384A1 (en) * | 2011-12-07 | 2013-06-13 | Samsung Electro-Mechanics Co., Ltd. | Integrated resonance and power factor correction control integrated circuit and power converter |
| CN102801339A (en) * | 2012-08-28 | 2012-11-28 | 矽力杰半导体技术(杭州)有限公司 | AC/DC voltage converting circuit with low stand-by power consumption and control method thereof |
| CN104143819A (en) * | 2013-05-07 | 2014-11-12 | 海洋王（东莞）照明科技有限公司 | Filter capacitor bleeder circuit |
| CN105162313A (en) * | 2015-08-04 | 2015-12-16 | 广东欧珀移动通信有限公司 | Flyback switching power supply |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103078478B (en) | Controller for switching power supply and switching power supply | |
| TWI530072B (en) | Capacitance discharge circuit and power converter using the same | |
| CN202004649U (en) | Switching power supply circuit with flyback structure | |
| CN103929048B (en) | A kind of zero cross detection circuit of Switching Power Supply | |
| CN105099184B (en) | A kind of underload switch power supply chip | |
| CN104062914A (en) | Electronic Apparatus | |
| CN203632933U (en) | LED lamp driving power supply using numerical control chip | |
| CN103973138A (en) | Dynamic variable-frequency power conversion system | |
| TWI511433B (en) | Power conversion apparatus and control chip thereof | |
| US20140184191A1 (en) | System and device for reducing standby power consumption | |
| US20110110121A1 (en) | Power supply circuit | |
| US20140085943A1 (en) | Controller with Quasi-Resonant Mode and Continuous Conduction Mode and Operating Method Thereof | |
| CN103780104A (en) | Power supply device | |
| CN105071501A (en) | Large-current fast charging system with temperature control function and charging method of large-current fast charging system | |
| TW202209799A (en) | Power supply with reduced power consumption and related electronic system | |
| WO2019033237A1 (en) | Electric leakage protection circuit, electric leakage protection apparatus and led apparatus | |
| CN202696482U (en) | Power supply circuit for leakage circuit breaker | |
| CN107979272A (en) | Circuit for module power supply | |
| CN103543808A (en) | CPU supply circuit protecting system | |
| CN102902336B (en) | The power supply link block of mainboard, mainboard and electronic equipment thereof | |
| CN207603439U (en) | A kind of regulated power supply system with multi-protective function | |
| CN107302314B (en) | Power supply change-over device and the method for preventing power supply change-over device from shutting down extremely | |
| CN104485634A (en) | Power supply management system and method for achieving average current protection | |
| CN203219174U (en) | Switching power circuit | |
| CN204205994U (en) | A kind of sound equipment power circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180501 |